Document and Entity Information
Document and Entity Information - shares | 6 Months Ended | |
Jun. 30, 2017 | Jul. 31, 2017 | |
Document Information [Line Items] | ||
Document Type | 10-Q | |
Amendment Flag | false | |
Document Period End Date | Jun. 30, 2017 | |
Document Fiscal Year Focus | 2,017 | |
Document Fiscal Period Focus | Q2 | |
Entity Registrant Name | BERKSHIRE HATHAWAY ENERGY CO | |
Entity Central Index Key | 1,081,316 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
Entity Common Stock, Shares Outstanding | 77,174,325 | |
PacifiCorp [Member] | ||
Document Information [Line Items] | ||
Entity Registrant Name | PACIFICORP /OR/ | |
Entity Central Index Key | 75,594 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
Entity Common Stock, Shares Outstanding | 357,060,915 | |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||
Document Information [Line Items] | ||
Entity Registrant Name | MIDAMERICAN FUNDING, LLC | |
Entity Central Index Key | 1,098,296 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
MidAmerican Energy Company [Member] | ||
Document Information [Line Items] | ||
Entity Registrant Name | MIDAMERICAN ENERGY COMPANY | |
Entity Central Index Key | 928,576 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
Entity Common Stock, Shares Outstanding | 70,980,203 | |
Nevada Power Company [Member] | ||
Document Information [Line Items] | ||
Entity Registrant Name | Nevada Power Company | |
Entity Central Index Key | 71,180 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
Entity Common Stock, Shares Outstanding | 1,000 | |
Sierra Pacific Power Company [Member] | ||
Document Information [Line Items] | ||
Entity Registrant Name | Sierra Pacific Power Company | |
Entity Central Index Key | 90,144 | |
Current Fiscal Year End Date | --12-31 | |
Entity Filer Category | Non-accelerated Filer | |
Entity Common Stock, Shares Outstanding | 1,000 |
Consolidated Balance Sheets
Consolidated Balance Sheets - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Current assets: | ||
Cash and cash equivalents | $ 827 | $ 721 |
Trade receivables, net | 1,854 | 1,751 |
Income taxes receivable | 230 | 0 |
Inventories | 893 | 925 |
Mortgage loans held for sale | 408 | 359 |
Other current assets | 954 | 917 |
Total current assets | 5,166 | 4,673 |
Property, plant and equipment, net | 63,686 | 62,509 |
Goodwill | 9,204 | 9,010 |
Regulatory assets | 4,474 | 4,307 |
Investments and restricted cash and investments | 4,261 | 3,945 |
Other assets | 1,018 | 996 |
Total assets | 87,809 | 85,440 |
Current liabilities: | ||
Accounts payable | 1,214 | 1,317 |
Accrued interest | 466 | 454 |
Accrued property, income and other taxes | 376 | 389 |
Accrued employee expenses | 302 | 261 |
Short-term debt | 2,495 | 1,869 |
Current portion of long-term debt | 1,880 | 1,006 |
Other current liabilities | 1,021 | 1,017 |
Total current liabilities | 7,754 | 6,313 |
Regulatory liabilities | 3,023 | 2,933 |
BHE senior debt | 6,770 | 7,418 |
BHE junior subordinated debentures | 494 | 944 |
Subsidiary debt | 26,904 | 26,748 |
Deferred income taxes | 14,211 | 13,879 |
Other long-term liabilities | 2,783 | 2,742 |
Total liabilities | 61,939 | 60,977 |
Commitments and contingencies | ||
BHE shareholders' equity: | ||
Common stock - 115 shares authorized, no par value, 77 shares issued and outstanding | 0 | 0 |
Additional paid-in capital | 6,362 | 6,390 |
Retained earnings | 20,467 | 19,448 |
Accumulated other comprehensive loss, net | (1,089) | (1,511) |
Total BHE shareholders' equity | 25,740 | 24,327 |
Noncontrolling interests | 130 | 136 |
Total equity | 25,870 | 24,463 |
Total liabilities and equity | $ 87,809 | $ 85,440 |
Consolidated Balance Sheets - P
Consolidated Balance Sheets - PacifiCorp - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Current assets: | ||
Cash and cash equivalents | $ 827 | $ 721 |
Income taxes receivable | 230 | 0 |
Other current assets | 954 | 917 |
Total current assets | 5,166 | 4,673 |
Regulatory assets | 4,474 | 4,307 |
Other assets | 1,018 | 996 |
Total assets | 87,809 | 85,440 |
Current liabilities: | ||
Accounts payable | 1,214 | 1,317 |
Accrued employee expenses | 302 | 261 |
Accrued interest | 466 | 454 |
Accrued property, income and other taxes | 376 | 389 |
Short-term debt | 2,495 | 1,869 |
Other current liabilities | 1,021 | 1,017 |
Total current liabilities | 7,754 | 6,313 |
Regulatory liabilities | 3,023 | 2,933 |
Deferred income taxes | 14,211 | 13,879 |
Other long-term liabilities | 2,783 | 2,742 |
Total liabilities | 61,939 | 60,977 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 6,362 | 6,390 |
Retained earnings | 20,467 | 19,448 |
Accumulated other comprehensive loss, net | (1,089) | (1,511) |
Total BHE shareholders' equity | 25,740 | 24,327 |
Total liabilities and equity | 87,809 | 85,440 |
PacifiCorp [Member] | ||
Current assets: | ||
Cash and cash equivalents | 167 | 17 |
Receivables, Net, Current | 681 | 728 |
Income taxes receivable | 0 | 17 |
Other Inventory, Supplies, Gross | 231 | 228 |
Energy Related Inventory, Other Fossil Fuel | 224 | 215 |
Regulatory Assets, Current | 28 | 53 |
Other current assets | 75 | 96 |
Total current assets | 1,406 | 1,354 |
Public Utilities, Property, Plant and Equipment, Net | 19,141 | 19,162 |
Regulatory assets | 1,535 | 1,490 |
Other assets | 378 | 388 |
Total assets | 22,460 | 22,394 |
Current liabilities: | ||
Accounts payable | 397 | 408 |
Accrued Income Taxes, Current | 160 | 0 |
Accrued employee expenses | 85 | 67 |
Accrued interest | 115 | 115 |
Accrued property, income and other taxes | 100 | 63 |
Short-term debt | 0 | 270 |
Long-term Debt and Capital Lease Obligations, Current | 92 | 58 |
Regulatory Liability, Current | 61 | 54 |
Other current liabilities | 169 | 164 |
Total current liabilities | 1,179 | 1,199 |
Regulatory liabilities | 1,020 | 978 |
Long-term Debt and Capital Lease Obligations | 6,935 | 7,021 |
Deferred income taxes | 4,868 | 4,880 |
Other long-term liabilities | 914 | 926 |
Total liabilities | 14,916 | 15,004 |
Equity: | ||
Preferred Stock, Value, Issued | 2 | 2 |
Common stock | 0 | 0 |
Additional paid-in capital | 4,479 | 4,479 |
Retained earnings | 3,075 | 2,921 |
Accumulated other comprehensive loss, net | (12) | (12) |
Total BHE shareholders' equity | 7,544 | 7,390 |
Total liabilities and equity | $ 22,460 | $ 22,394 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parenthetical) - PacifiCorp - $ / shares shares in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Common stock, par value | $ 0 | $ 0 |
Common stock, shares authorized | 115 | 115 |
Common stock, shares issued | 77 | 77 |
Common stock, shares outstanding | 77 | 77 |
PacifiCorp [Member] | ||
Common stock, par value | $ 0 | $ 0 |
Common stock, shares authorized | 750 | 750 |
Common stock, shares issued | 357 | 357 |
Common stock, shares outstanding | 357 | 357 |
Balance Sheets - MEC
Balance Sheets - MEC - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Current assets: | ||
Cash and cash equivalents | $ 827 | $ 721 |
Income taxes receivable | 230 | 0 |
Inventories | 893 | 925 |
Other current assets | 954 | 917 |
Total current assets | 5,166 | 4,673 |
Regulatory assets | 4,474 | 4,307 |
Investments and restricted cash and investments | 4,261 | 3,945 |
Other assets | 1,018 | 996 |
Total assets | 87,809 | 85,440 |
Current liabilities: | ||
Accounts Payable, Current | 1,214 | 1,317 |
Accrued interest | 466 | 454 |
Accrued property, income and other taxes | 376 | 389 |
Short-term debt | 2,495 | 1,869 |
Other current liabilities | 1,021 | 1,017 |
Total current liabilities | 7,754 | 6,313 |
Deferred income taxes | 14,211 | 13,879 |
Regulatory liabilities | 3,023 | 2,933 |
Other long-term liabilities | 2,783 | 2,742 |
Total liabilities | 61,939 | 60,977 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 6,362 | 6,390 |
Retained earnings | 20,467 | 19,448 |
Accumulated other comprehensive loss, net | (1,089) | (1,511) |
Total BHE shareholders' equity | 25,740 | 24,327 |
Total liabilities and equity | 87,809 | 85,440 |
MidAmerican Energy Company [Member] | ||
Current assets: | ||
Cash and cash equivalents | 370 | 14 |
Receivables, Net, Current | 268 | 285 |
Income taxes receivable | 94 | 9 |
Inventories | 234 | 264 |
Other current assets | 22 | 35 |
Total current assets | 988 | 607 |
Public Utilities, Property, Plant and Equipment, Net | 13,042 | 12,821 |
Regulatory assets | 1,222 | 1,161 |
Investments and restricted cash and investments | 689 | 653 |
Other assets | 200 | 217 |
Total assets | 16,141 | 15,459 |
Current liabilities: | ||
Accounts Payable, Current | 147 | 303 |
Accrued interest | 48 | 45 |
Accrued property, income and other taxes | 140 | 137 |
Short-term debt | 0 | 99 |
Long-term Debt and Capital Lease Obligations, Current | 350 | 250 |
Other current liabilities | 156 | 159 |
Total current liabilities | 841 | 993 |
Long-term Debt and Capital Lease Obligations | 4,543 | 4,051 |
Deferred income taxes | 3,638 | 3,572 |
Regulatory liabilities | 899 | 883 |
Asset retirement obligations | 528 | 510 |
Other long-term liabilities | 294 | 290 |
Total liabilities | 10,743 | 10,299 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 561 | 561 |
Retained earnings | 4,837 | 4,599 |
Total BHE shareholders' equity | 5,398 | 5,160 |
Total liabilities and equity | $ 16,141 | $ 15,459 |
Consolidated Balance Sheets Bal
Consolidated Balance Sheets Balance Sheets (Parenthetical) - MEC - $ / shares shares in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Common stock, par value | $ 0 | $ 0 |
Common stock, shares authorized | 115 | 115 |
Common stock, shares issued | 77 | 77 |
Common stock, shares outstanding | 77 | 77 |
MidAmerican Energy Company [Member] | ||
Common stock, par value | $ 0 | $ 0 |
Common stock, shares authorized | 350 | 350 |
Common stock, shares issued | 71 | 71 |
Common stock, shares outstanding | 71 | 71 |
Consolidated Balance Sheets - M
Consolidated Balance Sheets - MidAmerican Funding - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 | |
Current assets: | |||
Cash and cash equivalents | $ 827 | $ 721 | |
Income taxes receivable | 230 | 0 | |
Inventories | 893 | 925 | |
Other current assets | 954 | 917 | |
Total current assets | 5,166 | 4,673 | |
Property, plant and equipment, net | 63,686 | 62,509 | |
Goodwill | 9,204 | 9,010 | |
Regulatory assets | 4,474 | 4,307 | |
Investments and restricted cash and investments | 4,261 | 3,945 | |
Other assets | 1,018 | 996 | |
Total assets | 87,809 | 85,440 | |
Current liabilities: | |||
Accounts payable | 1,214 | 1,317 | |
Accrued interest | 466 | 454 | |
Accrued property, income and other taxes | 376 | 389 | |
Short-term debt | 2,495 | 1,869 | |
Other current liabilities | 1,021 | 1,017 | |
Total current liabilities | 7,754 | 6,313 | |
Deferred income taxes | 14,211 | 13,879 | |
Regulatory liabilities | 3,023 | 2,933 | |
Other long-term liabilities | 2,783 | 2,742 | |
Total liabilities | 61,939 | 60,977 | |
Commitments and contingencies | |||
Equity: | |||
Additional paid-in capital | 6,362 | 6,390 | |
Retained earnings | 20,467 | 19,448 | |
Accumulated other comprehensive loss, net | (1,089) | (1,511) | |
Total member's equity | 25,740 | 24,327 | |
Total liabilities and equity | 87,809 | 85,440 | |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |||
Current assets: | |||
Cash and cash equivalents | 371 | 15 | |
Receivables, Net, Current | 268 | 287 | |
Income taxes receivable | 98 | 9 | |
Inventories | 234 | 264 | |
Other current assets | 22 | 35 | |
Total current assets | 993 | 610 | |
Property, plant and equipment, net | 13,056 | 12,835 | |
Goodwill | 1,270 | 1,270 | |
Regulatory assets | 1,222 | 1,161 | |
Investments and restricted cash and investments | 691 | 655 | |
Other assets | 201 | 216 | |
Total assets | [1] | 17,433 | 16,747 |
Current liabilities: | |||
Accounts payable | 147 | 302 | |
Accrued interest | 55 | 52 | |
Accrued property, income and other taxes | 140 | 138 | |
Notes Payable, Related Parties, Current | 41 | 31 | |
Short-term debt | 0 | 99 | |
Long-term Debt and Capital Lease Obligations, Current | 350 | 250 | |
Other current liabilities | 156 | 160 | |
Total current liabilities | 889 | 1,032 | |
Long-term Debt and Capital Lease Obligations | 4,869 | 4,377 | |
Deferred income taxes | 3,635 | 3,568 | |
Regulatory liabilities | 899 | 883 | |
Asset retirement obligations | 528 | 510 | |
Other long-term liabilities | 294 | 291 | |
Total liabilities | 11,114 | 10,661 | |
Commitments and contingencies | |||
Equity: | |||
Additional paid-in capital | 1,679 | 1,679 | |
Retained earnings | 4,640 | 4,407 | |
Total member's equity | 6,319 | 6,086 | |
Total liabilities and equity | $ 17,433 | $ 16,747 | |
[1] | (1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments. |
Consolidated Balance Sheets - N
Consolidated Balance Sheets - NPC - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Current assets: | ||
Cash and cash equivalents | $ 827 | $ 721 |
Trade receivables, net | 1,854 | 1,751 |
Inventories | 893 | 925 |
Other current assets | 954 | 917 |
Total current assets | 5,166 | 4,673 |
Regulatory assets | 4,474 | 4,307 |
Other assets | 1,018 | 996 |
Total assets | 87,809 | 85,440 |
Current liabilities: | ||
Accounts payable | 1,214 | 1,317 |
Accrued interest | 466 | 454 |
Accrued property, income and other taxes | 376 | 389 |
Other current liabilities | 1,021 | 1,017 |
Total current liabilities | 7,754 | 6,313 |
Regulatory liabilities | 3,023 | 2,933 |
Deferred income taxes | 14,211 | 13,879 |
Other long-term liabilities | 2,783 | 2,742 |
Total liabilities | 61,939 | 60,977 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 6,362 | 6,390 |
Retained earnings | 20,467 | 19,448 |
Accumulated other comprehensive loss, net | (1,089) | (1,511) |
Total BHE shareholders' equity | 25,740 | 24,327 |
Total liabilities and equity | 87,809 | 85,440 |
Nevada Power Company [Member] | ||
Current assets: | ||
Cash and cash equivalents | 10 | 279 |
Trade receivables, net | 322 | 243 |
Inventories | 58 | 73 |
Regulatory Assets, Current | 37 | 20 |
Other current assets | 45 | 38 |
Total current assets | 472 | 653 |
Public Utilities, Property, Plant and Equipment, Net | 6,925 | 6,997 |
Regulatory assets | 1,133 | 1,000 |
Other assets | 37 | 39 |
Total assets | 8,567 | 8,689 |
Current liabilities: | ||
Accounts payable | 223 | 187 |
Accrued interest | 50 | 50 |
Accrued property, income and other taxes | 111 | 93 |
Regulatory Liability, Current | 38 | 37 |
Long-term Debt and Financial and Capital Lease Obligations, Current | 347 | 17 |
Customer Deposits, Current | 77 | 78 |
Other current liabilities | 31 | 39 |
Total current liabilities | 877 | 501 |
Long-term Debt and Financial and Capital Lease Obligations | 2,736 | 3,049 |
Regulatory liabilities | 427 | 416 |
Deferred income taxes | 1,505 | 1,474 |
Other long-term liabilities | 284 | 277 |
Total liabilities | 5,829 | 5,717 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 2,308 | 2,308 |
Retained earnings | 433 | 667 |
Accumulated other comprehensive loss, net | (3) | (3) |
Total BHE shareholders' equity | 2,738 | 2,972 |
Total liabilities and equity | $ 8,567 | $ 8,689 |
Consolidated Balance Sheets (P9
Consolidated Balance Sheets (Parenthetical) - NPC - $ / shares | Jun. 30, 2017 | Dec. 31, 2016 |
Common stock, shares authorized | 115,000,000 | 115,000,000 |
Common stock, shares issued | 77,000,000 | 77,000,000 |
Common stock, shares outstanding | 77,000,000 | 77,000,000 |
Nevada Power Company [Member] | ||
Common Stock, Par or Stated Value Per Share | $ 1 | $ 1 |
Common stock, shares authorized | 1,000 | 1,000 |
Common stock, shares issued | 1,000 | 1,000 |
Common stock, shares outstanding | 1,000 | 1,000 |
Consolidated Balance Sheets - S
Consolidated Balance Sheets - SPPC - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Current assets: | ||
Cash and cash equivalents | $ 827 | $ 721 |
Trade receivables, net | 1,854 | 1,751 |
Inventories | 893 | 925 |
Other current assets | 954 | 917 |
Total current assets | 5,166 | 4,673 |
Regulatory assets | 4,474 | 4,307 |
Other assets | 1,018 | 996 |
Total assets | 87,809 | 85,440 |
Current liabilities: | ||
Accounts payable | 1,214 | 1,317 |
Accrued interest | 466 | 454 |
Accrued property, income and other taxes | 376 | 389 |
Other current liabilities | 1,021 | 1,017 |
Total current liabilities | 7,754 | 6,313 |
Regulatory liabilities | 3,023 | 2,933 |
Deferred income taxes | 14,211 | 13,879 |
Other long-term liabilities | 2,783 | 2,742 |
Total liabilities | 61,939 | 60,977 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 6,362 | 6,390 |
Retained earnings | 20,467 | 19,448 |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (1,089) | (1,511) |
Total BHE shareholders' equity | 25,740 | 24,327 |
Total liabilities and equity | 87,809 | 85,440 |
Sierra Pacific Power Company [Member] | ||
Current assets: | ||
Cash and cash equivalents | 4 | 55 |
Trade receivables, net | 92 | 117 |
Inventories | 45 | 45 |
Regulatory Assets, Current | 27 | 25 |
Other current assets | 15 | 13 |
Total current assets | 183 | 255 |
Public Utilities, Property, Plant and Equipment, Net | 2,841 | 2,822 |
Regulatory assets | 403 | 410 |
Other assets | 7 | 6 |
Total assets | 3,434 | 3,493 |
Current liabilities: | ||
Accounts payable | 81 | 146 |
Accrued interest | 14 | 14 |
Accrued property, income and other taxes | 10 | 10 |
Regulatory Liability, Current | 18 | 69 |
Long-term Debt and Financial and Capital Lease Obligations, Current | 1 | 1 |
Customer Deposits, Current | 15 | 16 |
Other current liabilities | 16 | 12 |
Total current liabilities | 155 | 268 |
Long-term Debt and Financial and Capital Lease Obligations | 1,152 | 1,152 |
Regulatory liabilities | 222 | 221 |
Deferred income taxes | 639 | 617 |
Other long-term liabilities | 123 | 127 |
Total liabilities | 2,291 | 2,385 |
Commitments and contingencies | ||
Equity: | ||
Common stock | 0 | 0 |
Additional paid-in capital | 1,111 | 1,111 |
Retained earnings | 33 | (2) |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (1) | (1) |
Total BHE shareholders' equity | 1,143 | 1,108 |
Total liabilities and equity | $ 3,434 | $ 3,493 |
Consolidated Balance Sheets (11
Consolidated Balance Sheets (Parenthetical) - SPPC - $ / shares | Jun. 30, 2017 | Dec. 31, 2016 |
Common stock, shares authorized | 115,000,000 | 115,000,000 |
Common stock, shares issued | 77,000,000 | 77,000,000 |
Common stock, shares outstanding | 77,000,000 | 77,000,000 |
Sierra Pacific Power Company [Member] | ||
Common Stock, Par or Stated Value Per Share | $ 3.75 | $ 3.75 |
Common stock, shares authorized | 20,000,000 | 20,000,000 |
Common stock, shares issued | 1,000 | 1,000 |
Common stock, shares outstanding | 1,000 | 1,000 |
Consolidated Balance Sheets (12
Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
BHE shareholders' equity: | ||
Common stock, par value | $ 0 | $ 0 |
Common stock, shares authorized | 115 | 115 |
Common stock, shares issued | 77 | 77 |
Common stock, shares outstanding | 77 | 77 |
Consolidated Statements of Oper
Consolidated Statements of Operations - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Operating revenue: | ||||
Energy | $ 3,598 | $ 3,280 | $ 7,179 | $ 6,830 |
Real estate | 956 | 841 | 1,541 | 1,332 |
Total operating revenue | 4,554 | 4,121 | 8,720 | 8,162 |
Energy: | ||||
Cost of sales | 1,049 | 970 | 2,168 | 2,065 |
Operating expense | 950 | 909 | 1,833 | 1,791 |
Depreciation and amortization | 660 | 640 | 1,270 | 1,259 |
Real estate | 846 | 748 | 1,429 | 1,240 |
Total operating costs and expenses | 3,505 | 3,267 | 6,700 | 6,355 |
Operating income | 1,049 | 854 | 2,020 | 1,807 |
Other income (expense): | ||||
Interest expense | (457) | (468) | (915) | (941) |
Interest Costs Capitalized Adjustment | 10 | 103 | 20 | 114 |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Interest and dividend income | 27 | 27 | 53 | 54 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Equity income | 26 | 34 | 50 | 60 |
Net income | 587 | 545 | 1,150 | 1,040 |
Net income attributable to noncontrolling interests | 13 | 9 | 20 | 14 |
Net income attributable to BHE shareholders | $ 574 | $ 536 | $ 1,130 | $ 1,026 |
Consolidated Statements of Op14
Consolidated Statements of Operations - PacifiCorp - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Operating costs and expenses: | ||||
Operating income | $ 1,049 | $ 854 | $ 2,020 | $ 1,807 |
Other income (expense): | ||||
Interest expense | (457) | (468) | (915) | (941) |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Net income attributable to BHE shareholders | 574 | 536 | 1,130 | 1,026 |
PacifiCorp [Member] | ||||
Electric Domestic Regulated Revenue | 1,245 | 1,233 | 2,526 | 2,485 |
Operating costs and expenses: | ||||
Cost of Domestic Regulated Electric | 399 | 390 | 840 | 817 |
Utilities Operating Expense, Maintenance and Operations | 258 | 265 | 506 | 528 |
Utilities Operating Expense, Depreciation and Amortization | 202 | 193 | 398 | 383 |
Utilities Operating Expense, Taxes | 48 | 46 | 99 | 94 |
Utilities Operating Expense | 907 | 894 | 1,843 | 1,822 |
Operating income | 338 | 339 | 683 | 663 |
Other income (expense): | ||||
Interest expense | (95) | (95) | (190) | (190) |
Interest Costs Capitalized Adjustment | 4 | 4 | 8 | 8 |
Allowance for equity funds | 7 | 7 | 14 | 14 |
Other, net | 4 | 3 | 7 | 6 |
Total other income (expense) | (80) | (81) | (161) | (162) |
Income before income tax expense and equity income | 258 | 258 | 522 | 501 |
Income tax expense | 83 | 82 | 168 | 160 |
Net income attributable to BHE shareholders | $ 175 | $ 176 | $ 354 | $ 341 |
Statements of Operations - MEC
Statements of Operations - MEC - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Operating revenue: | ||||
Total operating revenue | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 |
Operating costs and expenses: | ||||
Total operating costs and expenses | 3,505 | 3,267 | 6,700 | 6,355 |
Operating income | 1,049 | 854 | 2,020 | 1,807 |
Other income (expense): | ||||
Interest expense | (457) | (468) | (915) | (941) |
Allowance for borrowed funds | 10 | 103 | 20 | 114 |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Net Income (Loss) Attributable to Parent | 574 | 536 | 1,130 | 1,026 |
MidAmerican Energy Company [Member] | ||||
Operating revenue: | ||||
Electric Domestic Regulated Revenue | 537 | 481 | 970 | 880 |
Gas Domestic Regulated Revenue And Other Revenue | 121 | 103 | 383 | 329 |
Total operating revenue | 658 | 584 | 1,353 | 1,209 |
Operating costs and expenses: | ||||
Cost of Domestic Regulated Electric | 110 | 90 | 212 | 182 |
Cost of gas sold and other | 62 | 47 | 234 | 182 |
Utilities Operating Expense, Maintenance and Operations | 181 | 170 | 347 | 330 |
Utilities Operating Expense, Depreciation and Amortization | 141 | 110 | 258 | 220 |
Utilities Operating Expense, Taxes | 29 | 28 | 60 | 56 |
Total operating costs and expenses | 523 | 445 | 1,111 | 970 |
Operating income | 135 | 139 | 242 | 239 |
Other income (expense): | ||||
Interest expense | (53) | (48) | (106) | (97) |
Allowance for borrowed funds | 3 | 2 | 5 | 3 |
Allowance for equity funds | 8 | 4 | 14 | 8 |
Other, net | 2 | 2 | 8 | 5 |
Total other income (expense) | (40) | (40) | (79) | (81) |
Income before income tax expense and equity income | 95 | 99 | 163 | 158 |
Income tax expense | (39) | (32) | (76) | (49) |
Net Income (Loss) Attributable to Parent | $ 134 | $ 131 | $ 239 | $ 207 |
Consolidated Statements of Op16
Consolidated Statements of Operations - MidAmerican Funding - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Operating revenue: | ||||
Total operating revenue | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 |
Operating costs and expenses: | ||||
Total operating costs and expenses | 3,505 | 3,267 | 6,700 | 6,355 |
Operating income | 1,049 | 854 | 2,020 | 1,807 |
Other income (expense): | ||||
Other Interest and Dividend Income | (457) | (468) | (915) | (941) |
Allowance for borrowed funds | 10 | 103 | 20 | 114 |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Net Income (Loss) Attributable to Parent | 574 | 536 | 1,130 | 1,026 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||||
Operating revenue: | ||||
Electric Domestic Regulated Revenue | 537 | 481 | 970 | 880 |
Gas Domestic Regulated Revenue And Other Revenue | 122 | 104 | 385 | 331 |
Total operating revenue | 659 | 585 | 1,355 | 1,211 |
Operating costs and expenses: | ||||
Cost of Domestic Regulated Electric | 110 | 90 | 212 | 182 |
Cost of Natural Gas Purchases And Cost of Other Goods And Services Sold | 63 | 48 | 235 | 183 |
Utilities Operating Expense, Maintenance and Operations | 180 | 169 | 347 | 330 |
Utilities Operating Expense, Depreciation and Amortization | 141 | 110 | 258 | 220 |
Utilities Operating Expense, Taxes | 29 | 28 | 60 | 56 |
Total operating costs and expenses | 523 | 445 | 1,112 | 971 |
Operating income | 136 | 140 | 243 | 240 |
Other income (expense): | ||||
Other Interest and Dividend Income | (59) | (55) | (118) | (109) |
Allowance for borrowed funds | 3 | 2 | 5 | 3 |
Allowance for equity funds | 8 | 4 | 14 | 8 |
Other, net | 2 | 3 | 8 | 6 |
Total other income (expense) | (46) | (46) | (91) | (92) |
Income before income tax expense and equity income | 90 | 94 | 152 | 148 |
Income tax expense | (41) | (33) | (81) | (52) |
Net Income (Loss) Attributable to Parent | $ 131 | $ 127 | $ 233 | $ 200 |
Consolidated Statements of Op17
Consolidated Statements of Operations - NPC - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Cost of sales | $ 1,049 | $ 970 | $ 2,168 | $ 2,065 |
Total operating costs and expenses | 3,505 | 3,267 | 6,700 | 6,355 |
Operating income | 1,049 | 854 | 2,020 | 1,807 |
Interest expense | 457 | 468 | 915 | 941 |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Net income attributable to BHE shareholders | 574 | 536 | 1,130 | 1,026 |
Nevada Power Company [Member] | ||||
Electric Domestic Regulated Revenue | 574 | 525 | 966 | 924 |
Cost of sales | 238 | 199 | 403 | 367 |
Utilities Operating Expense, Maintenance and Operations | 92 | 100 | 181 | 199 |
Utilities Operating Expense, Depreciation and Amortization | 78 | 76 | 154 | 151 |
Utilities Operating Expense, Taxes | 9 | 9 | 19 | 20 |
Total operating costs and expenses | 417 | 384 | 757 | 737 |
Operating income | 157 | 141 | 209 | 187 |
Interest expense | 44 | 47 | 88 | 95 |
Allowance for Funds Used During Construction, Capitalized Interest | 0 | 1 | 0 | 2 |
Allowance for equity funds | 0 | 2 | 1 | 3 |
Other, net | 7 | 5 | 13 | 10 |
Total other income (expense) | (37) | (39) | (74) | (80) |
Income before income tax expense and equity income | 120 | 102 | 135 | 107 |
Income tax expense | 43 | 36 | 48 | 38 |
Net income attributable to BHE shareholders | $ 77 | $ 66 | $ 87 | $ 69 |
Consolidated Statements of Op18
Consolidated Statements of Operations - SPPC - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Total operating revenue | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 |
Cost of sales | 1,049 | 970 | 2,168 | 2,065 |
Total operating costs and expenses | 3,505 | 3,267 | 6,700 | 6,355 |
Operating income | 1,049 | 854 | 2,020 | 1,807 |
Interest expense | 457 | 468 | 915 | 941 |
Allowance for equity funds | 18 | 115 | 35 | 130 |
Other, net | (3) | 1 | 22 | 11 |
Total other income (expense) | (405) | (222) | (785) | (632) |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 |
Income tax expense | 83 | 121 | 135 | 195 |
Net income attributable to BHE shareholders | 574 | 536 | 1,130 | 1,026 |
Sierra Pacific Power Company [Member] | ||||
Electric Domestic Regulated Revenue | 160 | 162 | 319 | 332 |
Gas Domestic Regulated Revenue | 17 | 19 | 51 | 66 |
Total operating revenue | 177 | 181 | 370 | 398 |
Cost of sales | 61 | 65 | 117 | 135 |
Cost of Purchased Oil and Gas | 6 | 7 | 22 | 37 |
Utilities Operating Expense, Maintenance and Operations | 40 | 45 | 81 | 86 |
Utilities Operating Expense, Depreciation and Amortization | 28 | 29 | 56 | 58 |
Utilities Operating Expense, Taxes | 6 | 7 | 12 | 13 |
Total operating costs and expenses | 141 | 153 | 288 | 329 |
Operating income | 36 | 28 | 82 | 69 |
Interest expense | 11 | 14 | 22 | 30 |
Allowance for Funds Used During Construction, Capitalized Interest | 0 | 1 | 0 | 1 |
Allowance for equity funds | 0 | 0 | 1 | 1 |
Other, net | 1 | 0 | 2 | 1 |
Total other income (expense) | (10) | (13) | (19) | (27) |
Income before income tax expense and equity income | 26 | 15 | 63 | 42 |
Income tax expense | 9 | 5 | 22 | 15 |
Net income attributable to BHE shareholders | $ 17 | $ 10 | $ 41 | $ 27 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Statement of Comprehensive Income [Abstract] | ||||
Net income | $ 587 | $ 545 | $ 1,150 | $ 1,040 |
Other comprehensive income, net of tax: | ||||
Unrecognized amounts on retirement benefits, net of tax | 4 | (40) | (1) | (62) |
Foreign currency translation adjustment | 221 | (272) | 308 | (205) |
Unrealized gains (losses) on available-for-sale securities, net of tax | 81 | 38 | 119 | 71 |
Unrealized losses on cash flow hedges, net of tax | (2) | 24 | (6) | 1 |
Total other comprehensive (loss) income, net of tax | 296 | (170) | 422 | (71) |
Comprehensive income | 883 | 375 | 1,572 | 969 |
Comprehensive income attributable to noncontrolling interests | 13 | 9 | 20 | 14 |
Comprehensive income attributable to BHE shareholders | $ 870 | $ 366 | $ 1,552 | $ 955 |
Statements of Comprehensive Inc
Statements of Comprehensive Income - MEC - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 574 | $ 536 | $ 1,130 | $ 1,026 |
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 81 | 38 | 119 | 71 |
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (2) | 24 | (6) | 1 |
Other comprehensive income (loss) | 296 | (170) | 422 | (71) |
Comprehensive income attributable to BHE shareholders | 870 | 366 | 1,552 | 955 |
MidAmerican Energy Company [Member] | ||||
Net Income (Loss) Attributable to Parent | $ 134 | $ 131 | $ 239 | 207 |
Other comprehensive income (loss) | $ 2 |
Statements of Comprehensive I21
Statements of Comprehensive Income (Parenthetical) - MEC - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Unrealized (losses) gains on available-for-sale securities, tax | $ 53 | $ 14 | $ 71 | $ 36 |
Unrealized (losses) gains on cash flow hedges, tax | $ (2) | $ 16 | $ (4) | $ 2 |
Consolidated Statements of Co22
Consolidated Statements of Comprehensive Income - MidAmerican Funding - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 574 | $ 536 | $ 1,130 | $ 1,026 |
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 81 | 38 | 119 | 71 |
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (2) | 24 | (6) | 1 |
Other comprehensive income (loss) | 296 | (170) | 422 | (71) |
Comprehensive income attributable to BHE shareholders | 870 | 366 | 1,552 | 955 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||||
Net Income (Loss) Attributable to Parent | $ 131 | $ 127 | $ 233 | 200 |
Other comprehensive income (loss) | $ 2 |
Consolidated Statements of Co23
Consolidated Statements of Comprehensive Income (Parenthetical) - MidAmerican Funding - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Unrealized (losses) gains on available-for-sale securities, tax | $ 53 | $ 14 | $ 71 | $ 36 |
Unrealized (losses) gains on cash flow hedges, tax | $ (2) | $ 16 | $ (4) | $ 2 |
Consolidated Statements of Co24
Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Consolidated Statements of Comprehensive Income Parenthetical [Abstract] | ||||
Unrecognized amounts on retirement benefits, tax | $ (3) | $ 13 | $ (4) | $ 19 |
Unrealized (losses) gains on available-for-sale securities, tax | 53 | 14 | 71 | 36 |
Unrealized (losses) gains on cash flow hedges, tax | $ (2) | $ 16 | $ (4) | $ 2 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | Noncontrolling Interest [Member] |
Balance (shares) at Dec. 31, 2015 | 77 | |||||
Balance at Dec. 31, 2015 | $ 22,535 | $ 0 | $ 6,403 | $ 16,906 | $ (908) | $ 134 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||
Net Income | 1,034 | 0 | 0 | 1,026 | 0 | 8 |
Other comprehensive income (loss) | (71) | 0 | 0 | 0 | (71) | 0 |
Distributions | (9) | 0 | 0 | 0 | 0 | (9) |
Other equity transactions | 10 | $ 0 | 1 | 0 | 9 | |
Balance (shares) at Jun. 30, 2016 | 77 | |||||
Balance at Jun. 30, 2016 | $ 23,499 | $ 0 | 6,404 | 17,932 | (979) | 142 |
Balance (shares) at Dec. 31, 2016 | 77 | 77 | ||||
Balance at Dec. 31, 2016 | $ 24,463 | $ 0 | 6,390 | 19,448 | (1,511) | 136 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||
Net Income | 1,139 | 0 | 0 | 1,130 | 0 | 9 |
Other comprehensive income (loss) | 422 | 0 | 0 | 0 | 422 | 0 |
Distributions | (12) | 0 | 0 | 0 | 0 | (12) |
Common stock purchases | (19) | 0 | (1) | (18) | 0 | 0 |
Conversion of Stock, Amount Converted | (100) | 0 | (6) | (94) | 0 | 0 |
Other equity transactions | $ (23) | $ 0 | (21) | 1 | 0 | (3) |
Balance (shares) at Jun. 30, 2017 | 77 | 77 | ||||
Balance at Jun. 30, 2017 | $ 25,870 | $ 0 | $ 6,362 | $ 20,467 | $ (1,089) | $ 130 |
Consolidated Statements of Ch26
Consolidated Statements of Changes in Equity - PacifiCorp - USD ($) $ in Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | PacifiCorp [Member] | PacifiCorp [Member]Preferred Stock [Member] | PacifiCorp [Member]Common Stock [Member] | PacifiCorp [Member]Additional Paid-in Capital [Member] | PacifiCorp [Member]Retained Earnings [Member] | PacifiCorp [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member] |
Stockholders' Equity Attributable to Parent at Dec. 31, 2015 | $ 7,503 | $ 2 | $ 0 | $ 4,479 | $ 3,033 | $ (11) | |||||
Net Income (Loss) Attributable to Parent | $ 1,026 | 341 | 341 | ||||||||
Total other comprehensive (loss) income, net of tax | (71) | $ 0 | $ 0 | $ 0 | $ (71) | ||||||
Dividends, Common Stock, Cash | (250) | (250) | |||||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2016 | 7,594 | 2 | 0 | 4,479 | 3,124 | (11) | |||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2016 | 24,327 | 7,390 | 2 | 0 | 4,479 | 2,921 | (12) | ||||
Net Income (Loss) Attributable to Parent | 1,130 | 354 | 354 | ||||||||
Total other comprehensive (loss) income, net of tax | 422 | $ 0 | $ 0 | $ 0 | $ 422 | ||||||
Dividends, Common Stock, Cash | (200) | (200) | |||||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2017 | $ 25,740 | $ 7,544 | $ 2 | $ 0 | $ 4,479 | $ 3,075 | $ (12) |
Statements of Changes in Equity
Statements of Changes in Equity - MEC - USD ($) $ in Millions | Total | Common Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | MidAmerican Energy Company [Member] | MidAmerican Energy Company [Member]Common Stock [Member] | MidAmerican Energy Company [Member]Retained Earnings [Member] | MidAmerican Energy Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member] |
Stockholders' Equity Attributable to Parent at Dec. 31, 2015 | $ 4,705 | $ 561 | $ 4,174 | $ (30) | ||||
Net Income (Loss) Attributable to Parent | $ 1,026 | 207 | 207 | |||||
Other comprehensive income (loss) | (71) | $ 0 | $ 0 | $ (71) | 2 | 2 | ||
Dividend, noncash, transfer of operations | 90 | 117 | 27 | |||||
Stockholders' Equity, Other | 10 | 0 | 0 | (1) | (1) | |||
Stockholders' Equity Attributable to Parent at Jun. 30, 2016 | 4,823 | 561 | 4,263 | (1) | ||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2016 | 24,327 | 5,160 | 561 | 4,599 | 0 | |||
Net Income (Loss) Attributable to Parent | 1,130 | 239 | 239 | |||||
Other comprehensive income (loss) | 422 | 0 | 0 | 422 | ||||
Stockholders' Equity, Other | (23) | $ 0 | $ 1 | $ 0 | (1) | (1) | ||
Stockholders' Equity Attributable to Parent at Jun. 30, 2017 | $ 25,740 | $ 5,398 | $ 561 | $ 4,837 | $ 0 |
Consolidated Statements of Ch28
Consolidated Statements of Changes in Equity - MidAmerican Funding - USD ($) $ in Millions | Total | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | MidAmerican Funding, LLC and Subsidiaries [Domain] | MidAmerican Funding, LLC and Subsidiaries [Domain]Additional Paid-in Capital [Member] | MidAmerican Funding, LLC and Subsidiaries [Domain]Retained Earnings [Member] | MidAmerican Funding, LLC and Subsidiaries [Domain]Accumulated Other Comprehensive (Loss) Income, Net [Member] |
Stockholders' Equity Attributable to Parent at Dec. 31, 2015 | $ 5,525 | $ 1,679 | $ 3,876 | $ (30) | ||||
Net Income (Loss) Attributable to Parent | $ 1,026 | 200 | 200 | |||||
Other comprehensive income (loss) | (71) | $ 0 | $ 0 | $ (71) | 2 | 2 | ||
Stockholders' Equity Note, Spinoff Transaction | 27 | 27 | ||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2016 | 5,754 | 1,679 | 4,076 | (1) | ||||
Stockholders' Equity, Other | 10 | 1 | 0 | |||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2016 | 24,327 | 6,086 | 1,679 | 4,407 | 0 | |||
Net Income (Loss) Attributable to Parent | 1,130 | 233 | 233 | |||||
Other comprehensive income (loss) | 422 | 0 | 0 | 422 | ||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2017 | 25,740 | $ 6,319 | $ 1,679 | $ 4,640 | $ 0 | |||
Stockholders' Equity, Other | $ (23) | $ (21) | $ 1 | $ 0 |
Consolidated Statements of Ch29
Consolidated Statements of Changes in Equity - NPC - USD ($) $ in Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | Nevada Power Company [Member] | Nevada Power Company [Member]Common Stock [Member] | Nevada Power Company [Member]Additional Paid-in Capital [Member] | Nevada Power Company [Member]Retained Earnings [Member] | Nevada Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member] |
Balance (shares) at Dec. 31, 2015 | 77,000,000 | 1,000 | ||||||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2015 | $ 3,163 | $ 0 | $ 2,308 | $ 858 | $ (3) | |||||
Net Income (Loss) Attributable to Parent | $ 1,026 | 69 | 69 | |||||||
Dividends, Common Stock, Cash | 270 | 270 | ||||||||
Stockholders' Equity, Other | $ (10) | $ 0 | $ (1) | $ 0 | ||||||
Balance (shares) at Jun. 30, 2016 | 77,000,000 | 1,000 | ||||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2016 | $ 2,962 | $ 0 | 2,308 | 657 | (3) | |||||
Balance (shares) at Dec. 31, 2016 | 77,000,000 | 77,000,000 | 1,000 | 1,000 | ||||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2016 | $ 24,327 | $ 2,972 | $ 0 | 2,308 | 667 | (3) | ||||
Net Income (Loss) Attributable to Parent | 1,130 | 87 | 87 | |||||||
Dividends, Common Stock, Cash | 322 | 322 | ||||||||
Stockholders' Equity, Other | $ 23 | $ 0 | $ 21 | $ (1) | $ 0 | $ (1) | (1) | |||
Balance (shares) at Jun. 30, 2017 | 77,000,000 | 77,000,000 | 1,000 | 1,000 | ||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2017 | $ 25,740 | $ 2,738 | $ 0 | $ 2,308 | $ 433 | $ (3) |
Consolidated Statements of Ch30
Consolidated Statements of Changes in Equity - SPPC - USD ($) $ in Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | Sierra Pacific Power Company [Member] | Sierra Pacific Power Company [Member]Common Stock [Member] | Sierra Pacific Power Company [Member]Additional Paid-in Capital [Member] | Sierra Pacific Power Company [Member]Retained Earnings [Member] | Sierra Pacific Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member] |
Balance (shares) at Dec. 31, 2015 | 77,000,000 | 1,000 | ||||||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2015 | $ 1,076 | $ 0 | $ 1,111 | $ (35) | $ 0 | |||||
Net Income (Loss) Attributable to Parent | $ 1,026 | 27 | 27 | |||||||
Dividends, Common Stock, Cash | 40 | $ 0 | 40 | 0 | ||||||
Stockholders' Equity, Other | $ (10) | $ 0 | $ (1) | $ 0 | ||||||
Balance (shares) at Jun. 30, 2016 | 77,000,000 | 1,000 | ||||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2016 | $ 1,063 | $ 0 | 1,111 | (48) | 0 | |||||
Balance (shares) at Dec. 31, 2016 | 77,000,000 | 77,000,000 | 1,000 | 1,000 | ||||||
Stockholders' Equity Attributable to Parent at Dec. 31, 2016 | $ 24,327 | $ 1,108 | $ 0 | 1,111 | (2) | (1) | ||||
Net Income (Loss) Attributable to Parent | 1,130 | 41 | 41 | |||||||
Dividends, Common Stock, Cash | 5 | 5 | ||||||||
Stockholders' Equity, Other | $ 23 | $ 0 | $ 21 | $ (1) | $ 0 | $ (1) | 1 | |||
Balance (shares) at Jun. 30, 2017 | 77,000,000 | 77,000,000 | 1,000 | 1,000 | ||||||
Stockholders' Equity Attributable to Parent at Jun. 30, 2017 | $ 25,740 | $ 1,143 | $ 0 | $ 1,111 | $ 33 | $ (1) |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Cash flows from operating activities: | ||
Net income | $ 1,150 | $ 1,040 |
Adjustments to reconcile net income to net cash flows from operating activities: | ||
Depreciation and amortization | 1,292 | 1,274 |
Allowance for equity funds | (35) | (130) |
Equity income, net of distributions | (9) | (44) |
Increase (Decrease) in Regulatory Assets and Liabilities | 21 | (1) |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Other, net | 3 | (72) |
Changes in other operating assets and liabilities, net of effects from acquisitions: | ||
Increase (Decrease) in Accounts Receivable and Other Operating Assets | (73) | (252) |
Derivative collateral, net | (13) | 23 |
Pension and other postretirement benefit plans | (25) | (9) |
Accrued property, income and other taxes | (244) | 557 |
Accounts payable and other liabilities | 20 | 94 |
Net cash flows from operating activities | 2,428 | 2,771 |
Cash flows from investing activities: | ||
Capital expenditures | (1,813) | (2,103) |
Acquisitions, net of cash acquired | (588) | (66) |
Decrease in restricted cash and investments | 30 | 9 |
Purchases of available-for-sale securities | (122) | (55) |
Proceeds from sales of available-for-sale securities | 127 | 88 |
Equity method investments | (65) | (282) |
Other, net | (6) | (46) |
Net cash flows from investing activities | (2,437) | (2,455) |
Cash flows from financing activities: | ||
Repayments of Long-term Debt | (950) | (1,000) |
Common stock purchases | (19) | 0 |
Proceeds from subsidiary debt | 1,163 | 1,461 |
Repayments of subsidiary debt | (668) | (1,529) |
Net proceeds from short-term debt | 617 | 465 |
Other, net | (31) | (39) |
Net cash flows from financing activities | 112 | (642) |
Effect of exchange rate changes | 3 | (4) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Cash and cash equivalents at end of period | $ 827 | $ 778 |
Consolidated Statements of Ca32
Consolidated Statements of Cash Flows - PacifiCorp - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 1,130 | $ 1,026 |
Increase (Decrease) in Allowance for Equity Funds Used During Construction | (35) | (130) |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Increase (Decrease) in Regulatory Assets and Liabilities | 21 | (1) |
Other Noncash Income (Expense) | 3 | (72) |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | (73) | (252) |
Derivative collateral, net | (13) | 23 |
Accounts payable and other liabilities | 20 | 94 |
Net cash flows from operating activities | 2,428 | 2,771 |
Capital expenditures | (1,813) | (2,103) |
Other, net | (6) | (46) |
Net cash flows from investing activities | (2,437) | (2,455) |
Proceeds from Issuance of Long-term Debt | 91 | 0 |
Net proceeds from (repayments of) short-term debt | (617) | (465) |
Other, net | (31) | (39) |
Net cash flows from financing activities | 112 | (642) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Cash and cash equivalents at end of period | 827 | 778 |
PacifiCorp [Member] | ||
Net Income (Loss) Attributable to Parent | 354 | 341 |
Utilities Operating Expense, Depreciation and Amortization | 398 | 383 |
Increase (Decrease) in Allowance for Equity Funds Used During Construction | (14) | (14) |
Deferred income taxes and amortization of investment tax credits | (5) | 67 |
Increase (Decrease) in Regulatory Assets and Liabilities | 24 | 53 |
Other Noncash Income (Expense) | 1 | 0 |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | 60 | 55 |
Derivative collateral, net | (4) | 7 |
Increase (Decrease) in Inventories | (12) | (38) |
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable | 171 | 27 |
Accounts payable and other liabilities | 56 | (84) |
Net cash flows from operating activities | 1,029 | 797 |
Capital expenditures | (370) | (415) |
Other, net | 15 | (9) |
Net cash flows from investing activities | (355) | (424) |
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities | (53) | (55) |
Net proceeds from (repayments of) short-term debt | (270) | (20) |
Payments of Ordinary Dividends, Common Stock | (200) | (250) |
Other, net | (1) | (1) |
Net cash flows from financing activities | (524) | (326) |
Net change in cash and cash equivalents | 150 | 47 |
Cash and cash equivalents at beginning of period | 17 | 12 |
Cash and cash equivalents at end of period | $ 167 | $ 59 |
Statements of Cash Flows - MEC
Statements of Cash Flows - MEC - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 1,130 | $ 1,026 |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Other Noncash Income (Expense) | 3 | (72) |
Derivative collateral, net | (13) | 23 |
Pension and other postretirement benefit plans | (25) | (9) |
Accrued property, income and other taxes | (244) | 557 |
Net cash flows from operating activities | 2,428 | 2,771 |
Capital expenditures | (1,813) | (2,103) |
Purchases of available-for-sale securities | (122) | (55) |
Proceeds from sales of available-for-sale securities | 127 | 88 |
Other, net | (6) | (46) |
Net cash flows from investing activities | (2,437) | (2,455) |
Proceeds from Issuance of Long-term Debt | 91 | 0 |
Repayments of Long-term Debt | (950) | (1,000) |
Net proceeds from short-term debt | 617 | 465 |
Other, net | (31) | (39) |
Net cash flows from financing activities | 112 | (642) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Cash and cash equivalents at end of period | 827 | 778 |
MidAmerican Energy Company [Member] | ||
Net Income (Loss) Attributable to Parent | 239 | 207 |
Utilities Operating Expense, Depreciation and Amortization | 258 | 220 |
Deferred income taxes and amortization of investment tax credits | 27 | 45 |
Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net | 19 | 21 |
Other Noncash Income (Expense) | (17) | (24) |
Increase (Decrease) in Accounts and Other Receivables | 17 | (30) |
Increase (Decrease) in Inventories | 30 | (18) |
Derivative collateral, net | 2 | 3 |
Pension and other postretirement benefit plans | (5) | (3) |
Increase (Decrease) in Accounts Payable | (80) | (33) |
Accrued property, income and other taxes | (83) | 213 |
Increase (Decrease) in Other Current Assets and Liabilities, Net | 2 | 8 |
Net cash flows from operating activities | 409 | 609 |
Capital expenditures | (545) | (506) |
Purchases of available-for-sale securities | (81) | (54) |
Proceeds from sales of available-for-sale securities | 77 | 55 |
Other, net | 7 | 0 |
Net cash flows from investing activities | (542) | (505) |
Proceeds from Issuance of Long-term Debt | 843 | 0 |
Repayments of Long-term Debt | (255) | (4) |
Net proceeds from short-term debt | (99) | 0 |
Net cash flows from financing activities | 489 | (4) |
Net change in cash and cash equivalents | 356 | 100 |
Cash and cash equivalents at beginning of period | 14 | 103 |
Cash and cash equivalents at end of period | $ 370 | $ 203 |
Consolidated Statements of Ca34
Consolidated Statements of Cash Flows - MidAmerican Funding - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 1,130 | $ 1,026 |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Other Noncash Income (Expense) | 3 | (72) |
Derivative collateral, net | (13) | 23 |
Pension and other postretirement benefit plans | (25) | (9) |
Accrued property, income and other taxes | (244) | 557 |
Net cash flows from operating activities | 2,428 | 2,771 |
Capital expenditures | (1,813) | (2,103) |
Purchases of available-for-sale securities | (122) | (55) |
Proceeds from sales of available-for-sale securities | 127 | 88 |
Other, net | (6) | (46) |
Net cash flows from investing activities | (2,437) | (2,455) |
Proceeds from Issuance of Long-term Debt | 91 | 0 |
Repayments of Long-term Debt | (950) | (1,000) |
Net proceeds from short-term debt | 617 | 465 |
Other, net | (31) | (39) |
Net cash flows from financing activities | 112 | (642) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Cash and cash equivalents at end of period | 827 | 778 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||
Net Income (Loss) Attributable to Parent | 233 | 200 |
Utilities Operating Expense, Depreciation and Amortization | 258 | 220 |
Deferred income taxes and amortization of investment tax credits | 27 | 45 |
Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net | 19 | 21 |
Other Noncash Income (Expense) | (17) | (23) |
Increase (Decrease) in Accounts and Other Receivables | 19 | (30) |
Increase (Decrease) in Inventories | 30 | (18) |
Derivative collateral, net | 2 | 3 |
Pension and other postretirement benefit plans | (5) | (3) |
Increase (Decrease) in Accounts Payable | (79) | (33) |
Accrued property, income and other taxes | (88) | 213 |
Increase (Decrease) in Other Current Assets and Liabilities, Net | 2 | 9 |
Net cash flows from operating activities | 401 | 604 |
Capital expenditures | (545) | (506) |
Purchases of available-for-sale securities | (81) | (54) |
Proceeds from sales of available-for-sale securities | 77 | 55 |
Other, net | 5 | 0 |
Net cash flows from investing activities | (544) | (505) |
Proceeds from Issuance of Long-term Debt | 843 | 0 |
Repayments of Long-term Debt | (255) | (4) |
Increase (Decrease) in Notes Payable, Related Parties, Current | 10 | 6 |
Net proceeds from short-term debt | (99) | 0 |
Net cash flows from financing activities | 499 | 2 |
Net change in cash and cash equivalents | 356 | 101 |
Cash and cash equivalents at beginning of period | 15 | 103 |
Cash and cash equivalents at end of period | $ 371 | $ 204 |
Consolidated Statements of Ca35
Consolidated Statements of Cash Flows - NPC - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 1,130 | $ 1,026 |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Allowance for equity funds | (35) | (130) |
Increase (Decrease) in Regulatory Assets and Liabilities | 21 | (1) |
Other Noncash Income (Expense) | 3 | (72) |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | (73) | (252) |
Accrued property, income and other taxes | (244) | 557 |
Accounts payable and other liabilities | 20 | 94 |
Net cash flows from operating activities | 2,428 | 2,771 |
Capital expenditures | (1,813) | (2,103) |
Acquisitions, net of cash acquired | (588) | (66) |
Payments for (Proceeds from) Other Investing Activities | 6 | 46 |
Net cash flows from investing activities | (2,437) | (2,455) |
Proceeds from Issuance of Long-term Debt | 91 | 0 |
Repayments of Long-term Debt | (950) | (1,000) |
Net cash flows from financing activities | 112 | (642) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at end of period | 827 | 778 |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Nevada Power Company [Member] | ||
Net Income (Loss) Attributable to Parent | 87 | 69 |
Other Nonrecurring (Income) Expense | (1) | 0 |
Utilities Operating Expense, Depreciation and Amortization | 154 | 151 |
Deferred income taxes and amortization of investment tax credits | 34 | 25 |
Allowance for equity funds | (1) | (3) |
Increase (Decrease) in Regulatory Assets and Liabilities | 13 | 17 |
Deferred Energy Change | (25) | 31 |
Amortization of Deferred Charges | 7 | (42) |
Other Noncash Income (Expense) | (2) | 4 |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | (84) | (70) |
Increase (Decrease) in Inventories | 7 | 2 |
Accrued property, income and other taxes | 18 | 10 |
Accounts payable and other liabilities | 48 | 50 |
Net cash flows from operating activities | 255 | 244 |
Capital expenditures | (139) | (181) |
Acquisitions, net of cash acquired | (77) | 0 |
Payments for (Proceeds from) Other Investing Activities | (4) | 0 |
Net cash flows from investing activities | (212) | (181) |
Repayments of Long-term Debt | (81) | (217) |
Payments of Ordinary Dividends, Common Stock | (322) | (270) |
Net cash flows from financing activities | (312) | (487) |
Net change in cash and cash equivalents | (269) | (424) |
Cash and cash equivalents at end of period | 10 | 112 |
Cash and cash equivalents at beginning of period | $ 279 | $ 536 |
Consolidated Statements of Ca36
Consolidated Statements of Cash Flows - SPPC - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Net Income (Loss) Attributable to Parent | $ 1,130 | $ 1,026 |
Allowance for equity funds | (35) | (130) |
Deferred income taxes and amortization of investment tax credits | 341 | 291 |
Increase (Decrease) in Regulatory Assets and Liabilities | 21 | (1) |
Other Noncash Income (Expense) | (3) | 72 |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | (73) | (252) |
Accrued property, income and other taxes | (244) | 557 |
Accounts payable and other liabilities | 20 | 94 |
Net cash flows from operating activities | 2,428 | 2,771 |
Capital expenditures | (1,813) | (2,103) |
Net cash flows from investing activities | (2,437) | (2,455) |
Proceeds from Issuance of Long-term Debt | 91 | 0 |
Repayments of Long-term Debt | (950) | (1,000) |
Other, net | (31) | (39) |
Net cash flows from financing activities | 112 | (642) |
Net change in cash and cash equivalents | 106 | (330) |
Cash and cash equivalents at beginning of period | 721 | 1,108 |
Cash and cash equivalents at end of period | 827 | 778 |
Sierra Pacific Power Company [Member] | ||
Net Income (Loss) Attributable to Parent | 41 | 27 |
Utilities Operating Expense, Depreciation and Amortization | 56 | 58 |
Allowance for equity funds | (1) | (1) |
Deferred income taxes and amortization of investment tax credits | 23 | 15 |
Increase (Decrease) in Regulatory Assets and Liabilities | 7 | (9) |
Deferred Energy Change | (20) | 44 |
Amortization of Deferred Charges | (34) | (21) |
Other Noncash Income (Expense) | 1 | (1) |
Increase (Decrease) in Accounts Receivable and Other Operating Assets | 24 | 29 |
Increase (Decrease) in Inventories | 0 | (3) |
Accrued property, income and other taxes | 1 | 0 |
Accounts payable and other liabilities | (54) | 2 |
Net cash flows from operating activities | 42 | 142 |
Capital expenditures | (87) | (92) |
Net cash flows from investing activities | (87) | (92) |
Proceeds from Issuance of Long-term Debt | 0 | 1,095 |
Repayments of Long-term Debt | (1) | (1,137) |
Payments of Ordinary Dividends, Common Stock | (5) | (40) |
Other, net | 0 | (5) |
Net cash flows from financing activities | (6) | (87) |
Net change in cash and cash equivalents | (51) | (37) |
Cash and cash equivalents at beginning of period | 55 | 106 |
Cash and cash equivalents at end of period | $ 4 | $ 69 |
General
General | 6 Months Ended |
Jun. 30, 2017 | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | General Berkshire Hathaway Energy Company (" BHE ") is a holding company that owns a highly diversified portfolio of locally-managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The Company is organized as eight business segments: PacifiCorp, MidAmerican Funding, LLC ("MidAmerican Funding") (which primarily consists of MidAmerican Energy Company ("MidAmerican Energy")), NV Energy, Inc. ("NV Energy") (which primarily consists of Nevada Power Company ("Nevada Power") and Sierra Pacific Power Company ("Sierra Pacific")), Northern Powergrid Holdings Company ("Northern Powergrid") (which primarily consists of Northern Powergrid (Northeast) Limited and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group (which consists of Northern Natural Gas Company ("Northern Natural Gas") and Kern River Gas Transmission Company ("Kern River")), BHE Transmission (which consists of BHE Canada Holdings Corporation ("AltaLink") (which primarily consists of AltaLink, L.P. ("ALP")) and BHE U.S. Transmission, LLC), BHE Renewables (which primarily consists of BHE Renewables, LLC and CalEnergy Philippines) and HomeServices of America, Inc. (collectively with its subsidiaries, "HomeServices"). The Company, through these locally managed and operated businesses, owns four utility companies in the United States serving customers in 11 states, two electricity distribution companies in Great Britain, two interstate natural gas pipeline companies in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily selling power generated from solar, wind, geothermal and hydroelectric sources under long-term contracts, the second largest residential real estate brokerage firm in the United States and one of the largest residential real estate brokerage franchise networks in the United States. The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of June 30, 2017 and for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in the Company's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
PacifiCorp [Member] | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | General PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has interests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company ("BHE"), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of June 30, 2017 and for the three- and six-month periods ended June 30, 2017 and 2016 . The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 and 2016 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in PacifiCorp's Annual Report on Form 10-K for the year ended December 31, 2016 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in PacifiCorp's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
MidAmerican Energy Company [Member] | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | General MidAmerican Energy Company ("MidAmerican Energy") is a public utility with electric and natural gas operations and is the principal subsidiary of MHC Inc. ("MHC"). MHC is a holding company that conducts no business other than the ownership of its subsidiaries and related corporate services. MHC's nonregulated subsidiaries include Midwest Capital Group, Inc. and MEC Construction Services Co. MHC is the direct, wholly owned subsidiary of MidAmerican Funding, LLC ("MidAmerican Funding"), which is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Financial Statements as of June 30, 2017 , and for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 , are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Financial Statements. Note 2 of Notes to Financial Statements included in MidAmerican Energy's Annual Report on Form 10-K for the year ended December 31, 2016 , describes the most significant accounting policies used in the preparation of the unaudited Financial Statements. There have been no significant changes in MidAmerican Energy's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | General MidAmerican Funding, LLC ("MidAmerican Funding") is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). MidAmerican Funding's direct, wholly owned subsidiary is MHC Inc. ("MHC"), which constitutes substantially all of MidAmerican Funding's assets, liabilities and business activities except those related to MidAmerican Funding's long-term debt securities. MHC conducts no business other than the ownership of its subsidiaries and related corporate services. MHC's principal subsidiary is MidAmerican Energy Company ("MidAmerican Energy"), a public utility with electric and natural gas operations. Direct, wholly owned nonregulated subsidiaries of MHC are Midwest Capital Group, Inc. and MEC Construction Services Co. The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of June 30, 2017 , and for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 , are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in MidAmerican Funding's Annual Report on Form 10-K for the year ended December 31, 2016 , describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in MidAmerican Funding's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
Nevada Power Company [Member] | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | Organization and Operations Nevada Power Company, together with its subsidiaries ("Nevada Power"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Sierra Pacific Power Company ("Sierra Pacific") and certain other subsidiaries. Nevada Power is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers, primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of June 30, 2017 and for the three- and six-month periods ended June 30, 2017 and 2016 . The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in Nevada Power's Annual Report on Form 10-K for the year ended December 31, 2016 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in Nevada Power's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
Sierra Pacific Power Company [Member] | |
Segment Reporting Information [Line Items] | |
General/Organization and Operations | Organization and Operations Sierra Pacific Power Company, together with its subsidiaries ("Sierra Pacific"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Nevada Power Company ("Nevada Power") and certain other subsidiaries. Sierra Pacific is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers and regulated retail natural gas customers primarily in northern Nevada. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of June 30, 2017 and for the three- and six-month periods ended June 30, 2017 and 2016 . The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and six-month periods ended June 30, 2017 and 2016 . The results of operations for the three- and six-month periods ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in Sierra Pacific's Annual Report on Form 10-K for the year ended December 31, 2016 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in Sierra Pacific's assumptions regarding significant accounting estimates and policies during the six-month period ended June 30, 2017 . |
New Accounting Pronouncements
New Accounting Pronouncements | 6 Months Ended |
Jun. 30, 2017 | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. The Company plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. The Company plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. The Company plans to adopt this guidance effective January 1, 2018 and does not believe the adoption of this guidance will have a material impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. The Company plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of adopting this guidance on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. The material impacts currently identified include recording the unrealized gains and losses on available-for-sale securities in the Consolidated Statements of Operations as opposed to other comprehensive income ("OCI"). For the six-month periods ended June 30, 2017 and 2016 , these amounts, net of tax, were $119 million and $71 million , respectively. In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. The Company plans to adopt this guidance effective January 1, 2018 under the modified retrospective method and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. The Company currently does not expect the timing and amount of revenue currently recognized to be materially different after adoption of the new guidance as a majority of revenue is recognized when the Company has the right to invoice as it corresponds directly with the value to the customer of the Company’s performance to date. The Company's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by regulated energy, nonregulated energy and real estate, with further disaggregation of regulated energy by jurisdiction and real estate by line of business. |
PacifiCorp [Member] | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. PacifiCorp plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. PacifiCorp plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. PacifiCorp plans to adopt this guidance effective January 1, 2018 and does not believe the adoption of this guidance will have a material impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. PacifiCorp plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The impact of this update is immaterial to PacifiCorp's Consolidated Financial Statements. In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. PacifiCorp plans to adopt this guidance effective January 1, 2018 under the modified retrospective method and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. PacifiCorp currently does not expect the timing and amount of revenue currently recognized to be materially different after adoption of the new guidance as a majority of revenue is recognized when PacifiCorp has the right to invoice as it corresponds directly with the value to the customer of PacifiCorp’s performance to date. PacifiCorp's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by customer class and jurisdiction. |
MidAmerican Energy Company [Member] | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. MidAmerican Energy plans to adopt this guidance effective January 1, 2018, and is currently evaluating the impact on its Financial Statements and disclosures included within Notes to Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. MidAmerican Energy plans to adopt this guidance effective January 1, 2018, and is currently evaluating the impact on its Financial Statements and disclosures included within Notes to Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. MidAmerican Energy plans to adopt this guidance effective January 1, 2018, and does not believe the adoption of this guidance will have a material impact on its Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. MidAmerican Energy plans to adopt this guidance effective January 1, 2019, and is currently evaluating the impact on its Financial Statements and disclosures included within Notes to Financial Statements. In January 2016, the FASB issued ASU No. 2016-01, which amends FASB ASC Subtopic 825-10, "Financial Instruments - Overall." The amendments in this guidance address certain aspects of recognition, measurement, presentation and disclosure of financial instruments including a requirement that all investments in equity securities that do not qualify for equity method accounting or result in consolidation of the investee be measured at fair value with changes in fair value recognized in net income. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption not permitted, and is required to be adopted prospectively by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. MidAmerican Energy is currently evaluating the impact of adopting this guidance on its Financial Statements and disclosures included within Notes to Financial Statements. In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. MidAmerican Energy plans to adopt this guidance effective January 1, 2018 under the modified retrospective method and is currently evaluating the impact on its Financial Statements and disclosures included within Notes to Financial Statements. MidAmerican Energy currently does not expect the timing and amount of revenue currently recognized to be materially different after adoption of the new guidance as a majority of revenue is recognized when MidAmerican Energy has the right to invoice as it corresponds directly with the value to the customer of MidAmerican Energy’s performance to date. MidAmerican Energy's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by jurisdiction for each segment. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements Refer to Note 2 of MidAmerican Energy's Notes to Financial Statements. |
Nevada Power Company [Member] | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. Nevada Power plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Nevada Power plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Nevada Power plans to adopt this guidance effective January 1, 2018 and does not believe the adoption of this guidance will have a material impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. Nevada Power plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. Nevada Power plans to adopt this guidance effective January 1, 2018 under the modified retrospective method and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. Nevada Power currently does not expect the timing and amount of revenue currently recognized to be materially different after adoption of the new guidance as a majority of revenue is recognized when Nevada Power has the right to invoice as it corresponds directly with the value to the customer of Nevada Power’s performance to date. Nevada Power's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by customer class. |
Sierra Pacific Power Company [Member] | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |
New Accounting Pronouncements | New Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-07, which amends FASB Accounting Standards Codification ("ASC") Topic 715, "Compensation - Retirement Benefits." The amendments in this guidance require that an employer disaggregate the service cost component from the other components of net benefit cost and report the service cost component in the same line item as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the statement of operations separately from the service cost component and outside the subtotal of operating income. Additionally, the guidance only allows the service cost component to be eligible for capitalization when applicable. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. This guidance must be adopted retrospectively for the presentation of the service cost component and the other components of net benefit cost in the statement of operations and prospectively for the capitalization of the service cost component in the balance sheet. Sierra Pacific plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In November 2016, the FASB issued ASU No. 2016-18, which amends FASB ASC Subtopic 230-10, “Statement of Cash Flows - Overall.” The amendments in this guidance require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Sierra Pacific plans to adopt this guidance effective January 1, 2018 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, which amends FASB ASC Topic 230, "Statement of Cash Flows." The amendments in this guidance address the classification of eight specific cash flow issues within the statement of cash flows with the objective of reducing the existing diversity in practice. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted, and is required to be adopted retrospectively. Sierra Pacific plans to adopt this guidance effective January 1, 2018 and does not believe the adoption of this guidance will have a material impact on its Consolidated Financial Statements. In February 2016, the FASB issued ASU No. 2016-02, which creates FASB ASC Topic 842, "Leases" and supersedes Topic 840 "Leases." This guidance increases transparency and comparability among entities by recording lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. A lessee should recognize in the balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from previous guidance. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted, and is required to be adopted using a modified retrospective approach. Sierra Pacific plans to adopt this guidance effective January 1, 2019 and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. In May 2014, the FASB issued ASU No. 2014-09, which creates FASB ASC Topic 606, "Revenue from Contracts with Customers" and supersedes ASC Topic 605, "Revenue Recognition." The guidance replaces industry-specific guidance and establishes a single five-step model to identify and recognize revenue. The core principle of the guidance is that an entity should recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Additionally, the guidance requires the entity to disclose further quantitative and qualitative information regarding the nature and amount of revenues arising from contracts with customers, as well as other information about the significant judgments and estimates used in recognizing revenues from contracts with customers. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 one year to interim and annual reporting periods beginning after December 15, 2017. During 2016, the FASB issued several ASUs that clarify the implementation guidance for ASU No. 2014-09 but do not change the core principle of the guidance. This guidance may be adopted retrospectively or under a modified retrospective method where the cumulative effect is recognized at the date of initial application. Sierra Pacific plans to adopt this guidance effective January 1, 2018 under the modified retrospective method and is currently evaluating the impact on its Consolidated Financial Statements and disclosures included within Notes to Consolidated Financial Statements. Sierra Pacific currently does not expect the timing and amount of revenue currently recognized to be materially different after adoption of the new guidance as a majority of revenue is recognized when Sierra Pacific has the right to invoice as it corresponds directly with the value to the customer of Sierra Pacific’s performance to date. Sierra Pacific's current plan is to quantitatively disaggregate revenue in the required financial statement footnote by segment and customer class. |
Business Acquisitions (Notes)
Business Acquisitions (Notes) | 6 Months Ended |
Jun. 30, 2017 | |
Business Acquisitions [Abstract] | |
Business Combination Disclosure [Text Block] | Business Acquisitions Oncor Electric Delivery Company LLC On July 7, 2017, BHE and certain subsidiaries entered into an agreement and plan of merger (the “Merger Agreement”) with Energy Future Holdings Corp. (“EFH Corp.”) and Energy Future Intermediate Holding Company LLC (“EFIH”), which is part of a joint plan of reorganization filed on July 7, 2017 with the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) for EFH Corp., EFIH and the EFH/EFIH Debtors (as defined in the Plan of Reorganization). Pursuant to the Merger Agreement, BHE will become the indirect owner of 80.03% of the outstanding equity interests of Oncor Electric Delivery Company LLC (“Oncor”). According to Oncor’s public filings, Oncor is a regulated electricity transmission and distribution company that operates the largest transmission and distribution system in Texas, delivering electricity to more than 3.4 million homes and businesses and operating more than 122,000 miles of transmission and distribution lines. Texas Transmission Investment LLC (“TTI”) owns 19.75% of Oncor’s outstanding membership interests and certain Oncor directors, employees and retirees indirectly beneficially own the remaining 0.22% of Oncor’s outstanding membership interests. BHE intends to acquire the 19.75% minority interest position in Oncor owned by TTI through either a privately negotiated agreement separate from the Merger Agreement or by exercising contractual rights pursuant to the Investor Rights Agreement. The Investor Rights Agreement is an agreement by and among Oncor, Oncor Electric Delivery Holdings Company LLC, TTI and EFH Corp. that governs the rights and obligations in connection with the minority interest position in Oncor owned by TTI. In the event of a change in control, EFH Corp. may exercise its rights under the Investor Rights Agreement requiring TTI to sell or otherwise transfer its ownership interest to BHE. BHE also intends to acquire the 0.22% minority interest position in Oncor indirectly beneficially owned by certain Oncor directors, employees and retirees through a separate, privately negotiated agreement. These transactions, when combined with the Merger Agreement described above, if completed, would result in Oncor being an indirect, wholly owned subsidiary of BHE. Pursuant to the Merger Agreement, the consideration funded by BHE for the acquisition of EFH Corp. will be $9.0 billion , which implies an equity value of approximately $11.25 billion for 100% of Oncor. The consideration is expected to be paid in cash, subject to certain terms and conditions set forth in the Merger Agreement. BHE’s primary shareholder has committed to provide the capital to fund the entire purchase price and BHE will fund the $9.0 billion purchase price by issuing common equity to its existing shareholders. Closing of the Merger Agreement is expected in the fourth quarter of 2017. The Merger Agreement is subject to numerous approvals, rulings and conditions, including those from the Bankruptcy Court, the Public Utility Commission of Texas and the Federal Energy Regulatory Commission (“FERC”), and the expiration of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. The Bankruptcy Court has scheduled August 21, 2017, to hear the motion to approve the Merger Agreement and October 24, 2017, as the start date of the confirmation hearing on the joint plan of reorganization. Until Bankruptcy Court approval of the Merger Agreement is obtained, its terms are not binding on EFH Corp. or EFIH. BHE, EFH Corp. and EFIH have certain termination rights under the Merger Agreement and, assuming approval of the Merger Agreement by the Bankruptcy Court, EFH Corp. and EFIH may be obligated to pay BHE a termination fee of $270 million under certain circumstances. Other The Company completed various acquisitions totaling $588 million , net of cash acquired, for the six-month period ended June 30, 2017 . The purchase price for each acquisition was allocated to the assets acquired and liabilities assumed, which related primarily to development and construction costs for the 110-megawatt Alamo 6 solar project, the remaining 25% interest in the Silverhawk natural gas-fueled generation facility at Nevada Power and residential real estate brokerage businesses. There were no other material assets acquired or liabilities assumed. |
Property, Plant and Equipment,
Property, Plant and Equipment, Net | 6 Months Ended |
Jun. 30, 2017 | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, plant and equipment, net consists of the following (in millions): As of Depreciable June 30, December 31, Life 2017 2016 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 72,317 $ 71,536 Interstate natural gas pipeline assets 3-80 years 6,969 6,942 79,286 78,478 Accumulated depreciation and amortization (24,029 ) (23,603 ) Regulated assets, net 55,257 54,875 Nonregulated assets: Independent power plants 5-30 years 5,880 5,594 Other assets 3-30 years 1,164 1,002 7,044 6,596 Accumulated depreciation and amortization (1,222 ) (1,060 ) Nonregulated assets, net 5,822 5,536 Net operating assets 61,079 60,411 Construction work-in-progress 2,607 2,098 Property, plant and equipment, net $ 63,686 $ 62,509 Construction work-in-progress includes $2.3 billion as of June 30, 2017 and $1.8 billion as of December 31, 2016 , related to the construction of regulated assets. During the fourth quarter of 2016, MidAmerican Energy revised its electric and gas depreciation rates based on the results of a new depreciation study, the most significant impact of which was longer estimated useful lives for certain wind-powered generating facilities. The effect of this change was to reduce depreciation and amortization expense by $34 million annually, or $8 million and $17 million for the three- and six-month periods ended June 30, 2017 , based on depreciable plant balances at the time of the change. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Refer to Note 3 of MidAmerican Energy's Notes to Financial Statements. In addition to MidAmerican Energy's property, plant and equipment, net, MidAmerican Funding had as of June 30, 2017 and December 31, 2016 , nonregulated property gross of $21 million and $22 million , respectively, related accumulated depreciation and amortization of $9 million , and construction work-in-progress of $2 million and $1 million , respectively, which consisted primarily of a corporate aircraft owned by MHC. |
MidAmerican Energy Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of June 30, December 31, Depreciable Life 2017 2016 Utility plant in service, net: Generation 20-70 years $ 11,308 $ 11,282 Transmission 52-75 years 1,794 1,726 Electric distribution 20-75 years 3,260 3,197 Gas distribution 29-75 years 1,588 1,565 Utility plant in service 17,950 17,770 Accumulated depreciation and amortization (5,660 ) (5,448 ) Utility plant in service, net 12,290 12,322 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1 ) (1 ) Nonregulated property, net 6 6 12,296 12,328 Construction work-in-progress 746 493 Property, plant and equipment, net $ 13,042 $ 12,821 During the fourth quarter of 2016, MidAmerican Energy revised its electric and gas depreciation rates based on the results of a new depreciation study, the most significant impact of which was longer estimated useful lives for certain wind-powered generating facilities. The effect of this change was to reduce depreciation and amortization expense by $34 million annually, or $8 million and $17 million for the three- and six-month periods ended June 30, 2017 , based on depreciable plant balances at the time of the change. |
PacifiCorp [Member] | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of June 30, December 31, Depreciable Life 2017 2016 Property, plant and equipment in-service 5-75 years $ 27,505 $ 27,298 Accumulated depreciation and amortization (9,074 ) (8,793 ) Net property, plant and equipment in-service 18,431 18,505 Construction work-in-progress 710 657 Total property, plant and equipment, net $ 19,141 $ 19,162 |
Nevada Power Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life June 30, December 31, 2017 2016 Utility plant: Generation 30 - 55 years $ 3,741 $ 4,271 Distribution 20 - 65 years 3,279 3,231 Transmission 45 - 65 years 1,861 1,846 General and intangible plant 5 - 65 years 773 738 Utility plant 9,654 10,086 Accumulated depreciation and amortization (2,791 ) (3,205 ) Utility plant, net 6,863 6,881 Other non-regulated, net of accumulated depreciation and amortization 45 years 2 2 Plant, net 6,865 6,883 Construction work-in-progress 60 114 Property, plant and equipment, net $ 6,925 $ 6,997 Acquisitions In April 2017, Nevada Power purchased the remaining 25% interest in the Silverhawk natural gas-fueled generating facility for $77 million . The PUCN approved the purchase of the facility in Nevada Power’s triennial Integrated Resource Plan filing in December 2015. The purchase price was allocated to the assets acquired, consisting primarily of generation utility plant, and no significant liabilities were assumed. |
Sierra Pacific Power Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment, Net | Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life June 30, December 31, 2017 2016 Utility plant: Electric generation 25 - 60 years $ 1,140 $ 1,137 Electric distribution 20 - 100 years 1,436 1,417 Electric transmission 50 - 100 years 774 771 Electric general and intangible plant 5 - 70 years 176 164 Natural gas distribution 35 - 70 years 385 381 Natural gas general and intangible plant 5 - 70 years 14 15 Common general 5 - 70 years 283 267 Utility plant 4,208 4,152 Accumulated depreciation and amortization (1,479 ) (1,442 ) Utility plant, net 2,729 2,710 Other non-regulated, net of accumulated depreciation and amortization 70 years 5 5 Plant, net 2,734 2,715 Construction work-in-progress 107 107 Property, plant and equipment, net $ 2,841 $ 2,822 |
Regulatory Matters
Regulatory Matters | 6 Months Ended |
Jun. 30, 2017 | |
Nevada Power Company [Member] | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |
Regulatory Matters | Regulatory Matters Deferred Energy Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the Public Utilities Commission of Nevada ("PUCN"). Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel, energy and capacity in future time periods. Chapter 704B Applications Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file with the PUCN an application to purchase energy from alternative providers of a new electric resource and become distribution only service customers. On a case-by-case basis, the PUCN will assess the application and may deny or grant the application subject to conditions, including paying an impact fee, paying on-going charges and receiving approval for specific alternative energy providers and terms. The impact fee and on-going charges are assessed to alleviate the burden on other Nevada customers for the applicants' share of previously committed investments and long-term renewable contracts and are set at a level designed such that the remaining customers are not subjected to increased costs. In May 2015, MGM Resorts International ("MGM") and Wynn Las Vegas, LLC ("Wynn"), filed applications with the PUCN to purchase energy from alternative providers of a new electric resource and become distribution only service customers of Nevada Power. In December 2015, the PUCN granted the applications subject to conditions, including paying an impact fee, on-going charges and receiving approval for specific alternative energy providers and terms. In December 2015, the applicants filed petitions for reconsideration. In January 2016, the PUCN granted reconsideration and updated some of the terms, including removing a limitation related to energy purchased indirectly from NV Energy. In September 2016, MGM and Wynn paid impact fees of $82 million and $15 million , respectively . In October 2016, MGM and Wynn became distribution only service customers and started procuring energy from another energy supplier. In April 2017, Wynn filed a motion with the PUCN seeking relief from the January 2016 order and requested the PUCN adopt an alternative impact fee and revise on-going charges associated with retirement of assets and high cost renewable contracts. In May 2017, a stipulation reached between MGM, Regulatory Operations Staff and the Bureau of Consumer Protection was filed requiring Nevada Power to credit $16 million as an offset against MGM's remaining impact fee obligation and, in June 2017, the PUCN approved the stipulation as filed. In September 2016, Switch, Ltd. ("Switch"), a customer of Nevada Power , filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada Power . In December 2016, the PUCN approved a stipulation agreement that allows Switch to purchase energy from alternative providers subject to conditions , including paying an impact fee to Nevada Power. In May 2017, Switch paid impact fees of $27 million and, in June 2017, Switch became a distribution only service customer and started procuring energy from another energy supplier. In November 2016, Caesars Enterprise Service ("Caesars"), a customer of Nevada Power , filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Nevada Power. In March 2017, the PUCN approved the application allowing Caesars to purchase energy from alternative providers subject to conditions, including paying an impact fee. In March 2017, Caesars provided notice that it intends to pay the impact fee and proceed with purchasing energy from alternative providers. Emissions Reduction and Capacity Replacement Plan ("ERCR Plan") In March 2017, Nevada Power retired Reid Gardner Unit 4, a 257 -MW coal-fueled generating facility. The early retirement was approved by the PUCN in December 2016 as a part of Nevada Power's second amendment to the ERCR Plan. The remaining net book value of $151 million was moved from property, plant and equipment, net to noncurrent regulatory assets on the Consolidated Balance Sheet as of June 30, 2017 , in compliance with the ERCR Plan. Refer to Note 9 for additional information on the ERCR Plan. |
Sierra Pacific Power Company [Member] | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |
Regulatory Matters | Regulatory Matters Deferred Energy Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the Public Utilities Commission of Nevada ("PUCN"). Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel, energy and capacity in future time periods. Regulatory Rate Review In June 2016, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing requested no incremental annual revenue relief. In October 2016, Sierra Pacific filed with the PUCN a settlement agreement resolving most, but not all, issues in the proceeding and reduced Sierra Pacific's electric revenue requirement by $3 million spread evenly to all rate classes. In December 2016, the PUCN approved the settlement agreement and established an additional six MW of net metering capacity under the grandfathered rates, which are those net metering rates that were in effect prior to January 2016; the order establishes cost-based rates and a value-based excess energy credit for customers who choose to install private generation after the six MW limitation is reached. The new rates were effective January 1, 2017. In January 2017, Sierra Pacific filed a petition for reconsideration relating to the creation of the additional six MW s of net metering at the grandfathered rates. Sierra Pacific believes the effects of the PUCN decision result in additional cost shifting to non-net metering customers and reduces the stipulated rate reduction for other customer classes. In June 2017, the PUCN denied the petition for reconsideration. In June 2016, Sierra Pacific filed a gas regulatory rate review with the PUCN. The filing requested a slight decrease in its incremental annual revenue requirement. In October 2016, Sierra Pacific filed with the PUCN a settlement agreement resolving all issues in the proceeding and reduced Sierra Pacific's gas revenue requirement by $2 million . In December 2016, the PUCN approved the settlement agreement. The new rates were effective January 1, 2017. Chapter 704B Applications Chapter 704B of the Nevada Revised Statutes allows retail electric customers with an average annual load of one MW or more to file with the PUCN an application to purchase energy from alternative providers of a new electric resource and become distribution only service customers. On a case-by-case basis, the PUCN will assess the application and may deny or grant the application subject to conditions, including paying an impact fee, paying on-going charges and receiving approval for specific alternative energy providers and terms. The impact fee and on-going charges are assessed to alleviate the burden on other Nevada customers for the applicants' share of previously committed investments and long-term renewable contracts and are set at a level designed such that the remaining customers are not subjected to increased costs. In September 2016, Switch, Ltd. ("Switch"), a customer of Sierra Pacific , filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific . In December 2016, the PUCN approved a stipulation agreement that allows Switch to purchase energy from alternative providers subject to conditions . In June 2017, Switch became a distribution only service customer and started procuring energy from another energy supplier. In November 2016, Caesars Enterprise Service ("Caesars"), a customer of Sierra Pacific , filed an application with the PUCN to purchase energy from alternative providers of a new electric resource and become a distribution only service customer of Sierra Pacific. In March 2017, the PUCN approved the application allowing Caesars to purchase energy from alternative providers subject to conditions, including paying an impact fee. In March 2017, Caesars provided notice that it intends to pay the impact fee and proceed with purchasing energy from alternative providers. |
Investments and Restricted Cash
Investments and Restricted Cash and Investments | 6 Months Ended |
Jun. 30, 2017 | |
Investments and Restricted Cash and Investments [Abstract] | |
Investments and Restricted Cash and Investments | Investments and Restricted Cash and Investments Investments and restricted cash and investments consists of the following (in millions): As of June 30, December 31, 2017 2016 Investments: BYD Company Limited common stock $ 1,381 $ 1,185 Rabbi trusts 427 403 Other 128 106 Total investments 1,936 1,694 Equity method investments: BHE Renewables tax equity investments 811 741 Electric Transmission Texas, LLC 694 672 Bridger Coal Company 150 165 Other 143 142 Total equity method investments 1,798 1,720 Restricted cash and investments: Quad Cities Station nuclear decommissioning trust funds 485 460 Other 238 282 Total restricted cash and investments 723 742 Total investments and restricted cash and investments $ 4,457 $ 4,156 Reflected as: Other current assets $ 196 $ 211 Noncurrent assets 4,261 3,945 Total investments and restricted cash and investments $ 4,457 $ 4,156 Investments BHE's investment in BYD Company Limited common stock is accounted for as an available-for-sale security with changes in fair value recognized in accumulated other comprehensive income (loss) ("AOCI"). The fair value of BHE's investment in BYD Company Limited common stock reflects a pre-tax unrealized gain of $1,149 million and $953 million as of June 30, 2017 and December 31, 2016 , respectively. |
Recent Financing Transactions
Recent Financing Transactions | 6 Months Ended |
Jun. 30, 2017 | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions Long-Term Debt In July 2017, Northern Powergrid Metering Limited entered into a £200 million secured amortizing corporate facility with a stated maturity of June 2026. The amortizing facility has a variable interest rate based on the London Interbank Offered Rate plus a spread that varies based on an agreed-upon schedule. In July 2017, Northern Powergrid Metering Limited received proceeds of £120 million under the facility to repay amounts provided by Yorkshire Electricity Group plc which provides internal funds for the continuing smart meter deployment program of Northern Powergrid Metering Limited. Northern Powergrid Metering Limited has entered into interest rate swaps that fix the underlying interest rate on 85% of the outstanding debt. In July 2017, Cordova Funding Corporation redeemed the remaining $89 million of its 8.48% to 9.07% Series A Senior Secured Bonds due December 2019, CE Generation, LLC redeemed the remaining $51 million of its 7.416% Senior Secured Bonds due December 2018, and Salton Sea Funding Corporation redeemed the remaining $20 million of its 7.475% Senior Secured Series F Bonds due November 2018, each at redemption prices determined in accordance with the terms of the respective indentures. In the first six months of 2017, BHE repaid at par value a total of $550 million , plus accrued interest, of its junior subordinated debentures due December 2044. In June 2017, BHE issued $100 million of its 5.0% junior subordinated debentures due June 2057 in exchange for 181,819 shares of BHE no par value common stock held by a minority shareholder. The junior subordinated debentures are redeemable at BHE's option at any time from and after June 15, 2037, at par plus accrued and unpaid interest. In May 2017, Alamo 6, LLC issued $232 million of its 4.17% Senior Secured Notes due March 2042. The principal of the notes amortizes beginning March 2018 with a final maturity in March 2042. The net proceeds were used to fund the repayment or reimbursement of amounts provided by BHE for the costs related to the development, construction and financing of a 110-megawatt solar project in Texas. In April 2017, Kern River redeemed the remaining $175 million of its 4.893% Senior Notes due April 2018 at a redemption price determined in accordance with the terms of the indenture. In February 2017, MidAmerican Energy issued $375 million of its 3.10% First Mortgage Bonds due May 2027 and $475 million of its 3.95% First Mortgage Bonds due August 2047. An amount equal to the net proceeds was used to finance capital expenditures, disbursed during the period from February 2, 2016 to February 1, 2017, with respect to investments in MidAmerican Energy's 551-megawatt Wind X and 2,000-megawatt Wind XI projects, which were previously financed with MidAmerican Energy's general funds. In February 2017, MidAmerican Energy redeemed in full through optional redemption its $250 million of 5.95% Senior Notes due July 2017. Credit Facilities In June 2017, BHE extended, with lender consent, the maturity date to June 2020 for its $2.0 billion unsecured credit facility and PacifiCorp extended, with lender consent, the maturity date to June 2020 for its $400 million unsecured credit facility, each by exercising the first of two available one-year extensions. In June 2017, PacifiCorp terminated its $600 million unsecured credit facility expiring March 2018 and entered into a $600 million unsecured credit facility expiring June 2020 with two one-year extension options subject to lender consent. The credit facility, which supports PacifiCorp's commercial paper program and certain series of its tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities. The credit facility requires PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. In June 2017, MidAmerican Energy terminated its $600 million unsecured credit facility expiring March 2018 and entered into a $900 million unsecured credit facility expiring June 2020 with two one-year extension options subject to lender consent. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities. The credit facility requires MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. In June 2017, Nevada Power amended its $400 million secured credit facility, extending the maturity date to June 2020 with two one-year extension options subject to lender consent. The amended credit facility, which is for general corporate purposes and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Nevada Power's option, plus a spread that varies based on Nevada Power's credit ratings for its senior secured long-term debt securities. The amended credit facility requires Nevada Power's ratio of consolidated debt, including current maturities, to total capitalization not to exceed 0.65 to 1.0 as of the last day of each quarter. In June 2017, Sierra Pacific amended its $250 million secured credit facility, extending the maturity date to June 2020 with two one-year extension options subject to lender consent. The amended credit facility, which is for general corporate purposes and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Sierra Pacific's option, plus a spread that varies based on Sierra Pacific's credit ratings for its senior secured long-term debt securities. The amended credit facility requires Sierra Pacific's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. In May 2017, BHE entered into a $1.0 billion unsecured credit facility expiring May 2018. The credit facility, which is for general corporate purposes and also supports BHE's commercial paper program and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at BHE's option, plus a spread that varies based on BHE's credit ratings for its senior unsecured long-term debt securities. The credit facility requires BHE's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.70 to 1.0 as of the last day of each quarter. |
Nevada Power Company [Member] | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions In January 2017, Nevada Power (1) issued a notice to the bondholders for the repurchase of the remaining outstanding amounts of its $38 million Pollution Control Revenue Bonds, Series 2006 and $38 million Pollution Control Revenue Bonds, Series 2006A and (2) redeemed the Pollution Control Revenue Bonds, Series 2006A, aggregate principal amount outstanding plus accrued interest with the use of cash on hand. In February 2017, Nevada Power redeemed the Pollution Control Revenue Bonds, Series 2006, aggregate principal amount outstanding plus accrued interest with the use of cash on hand. In May 2017, Nevada Power entered into a Financing Agreement with Clark County, Nevada (the "Clark Issuer") whereby the Clark Issuer loaned to Nevada Power the proceeds from the issuance, on behalf of Nevada Power, of $39.5 million of its 1.60% tax-exempt Pollution Control Refunding Revenue Bonds, Series 2017, due 2036 ("Series 2017 Bonds"). The Series 2017 Bonds are subject to mandatory purchase by Nevada Power in May 2020, and on and after the purchase date, the interest rate may be adjusted from time to time. In May 2017, Nevada Power entered into a Financing Agreement with the Coconino County, Arizona Pollution Control Corporation (the "Coconino Issuer") whereby the Coconino Issuer loaned to Nevada Power the proceeds from the issuance, on behalf of Nevada Power, of $40 million of its 1.80% tax-exempt Pollution Control Refunding Revenue Bonds, Series 2017A, due 2032 and $13 million of its 1.60% tax-exempt Pollution Control Refunding Revenue Bonds, Series 2017B, due 2039 (collectively, the "Series 2017AB Bonds"). The Series 2017AB Bonds are subject to mandatory purchase by Nevada Power in May 2020, and on and after the purchase date, the interest rate may be adjusted from time to time. To provide collateral security for its obligations, Nevada Power issued its General and Refunding Mortgage Notes, Series AA, No. AA-1 in the amount of $39.5 million and No. AA-2 in the amount of $53 million (collectively, the "Series AA Notes").The obligation of Nevada Power to make any payment of the principal and interest on any Series AA Notes is discharged to the extent Nevada Power has made payment on the Series 2017 Bonds and the Series 2017AB Bonds. The collective proceeds from the tax-exempt bond issuances were used to refund at par value, plus accrued interest, the Clark Issuer's $39.5 million of Pollution Control Refunding Revenue Bonds, Series 2006 and the Coconino Issuer's $40 million of Pollution Control Refunding Revenue Bonds, Series 2006A and $13 million of Pollution Control Refunding Revenue Bonds, Series 2006B, each previously issued on behalf of Nevada Power. In June 2017, Nevada Power amended its $400 million secured credit facility, extending the maturity date to June 2020 with two one-year extension options subject to lender consent. The amended credit facility, which is for general corporate purposes and provides for the issuances of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Nevada Power's option, plus a spread that varies based on Nevada Power's credit ratings for its senior secured long-term debt securities. The amended credit facility requires Nevada Power's ratio of consolidated debt, including current maturities, to total capitalization not to exceed 0.65 to 1.0 as of the last day of each quarter. |
PacifiCorp [Member] | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions In June 2017, PacifiCorp extended, with lender consent, the maturity date to June 2020 for its $400 million unsecured credit facility by exercising the first of two available one-year extensions. In June 2017, PacifiCorp terminated its $600 million unsecured credit facility expiring March 2018 and entered into a $600 million unsecured credit facility expiring June 2020 with two one-year extension options subject to lender consent. These credit facilities, which support PacifiCorp's commercial paper program and certain series of its tax-exempt bond obligations and provide for the issuance of letters of credit, have a variable interest rate based on the Eurodollar rate or a base rate, at PacifiCorp's option, plus a spread that varies based on PacifiCorp's credit ratings for its senior unsecured long-term debt securities. These credit facilities require PacifiCorp's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. |
MidAmerican Energy Company [Member] | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions Long-Term Debt In February 2017, MidAmerican Energy issued $375 million of its 3.10% First Mortgage Bonds due May 2027 and $475 million of its 3.95% First Mortgage Bonds due August 2047. An amount equal to the net proceeds was used to finance capital expenditures, disbursed during the period from February 2, 2016 to February 1, 2017, with respect to investments in MidAmerican Energy's 551-megawatt Wind X and 2,000-megawatt Wind XI projects, which were previously financed with MidAmerican Energy's general funds. In February 2017, MidAmerican Energy redeemed in full through optional redemption its $250 million of 5.95% Senior Notes due July 2017. Credit Facilities In June 2017, MidAmerican Energy terminated its $600 million unsecured credit facility expiring March 2018 and entered into a $900 million unsecured credit facility expiring June 2020 with two one-year extension options subject to lender consent. The credit facility, which supports MidAmerican Energy's commercial paper program and its variable-rate tax-exempt bond obligations and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread that varies based on MidAmerican Energy's credit ratings for senior unsecured long-term debt securities. The credit facility requires MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions Refer to Note 4 of MidAmerican Energy's Notes to Financial Statements. |
Sierra Pacific Power Company [Member] | |
Debt Instrument [Line Items] | |
Recent Financing Transactions | Recent Financing Transactions In June 2017, Sierra Pacific amended its $250 million secured credit facility, extending the maturity date to June 2020 with two one-year extension options subject to lender consent. The amended credit facility, which is for general corporate purposes and provides for the issuance of letters of credit, has a variable interest rate based on the Eurodollar rate or a base rate, at Sierra Pacific's option, plus a spread that varies based on Sierra Pacific's credit ratings for its senior secured long-term debt securities. The amended credit facility requires Sierra Pacific's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of each quarter. |
Income Taxes
Income Taxes | 6 Months Ended |
Jun. 30, 2017 | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Income Taxes | Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (19 ) (12 ) (17 ) (13 ) State income tax, net of federal income tax benefit 1 1 (2 ) (1 ) Income tax effect of foreign income (5 ) (6 ) (5 ) (5 ) Equity income 1 2 1 2 Other, net — (1 ) (1 ) (1 ) Effective income tax rate 13 % 19 % 11 % 17 % Income tax credits relate primarily to production tax credits from wind-powered generating facilities owned by MidAmerican Energy, PacifiCorp and BHE Renewables. Federal renewable electricity production tax credits are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Berkshire Hathaway includes the Company in its United States federal income tax return. For the six-month period ended June 30, 2017 the Company made net cash payments for income taxes to Berkshire Hathaway totaling $24 million . For the six-month period ended June 30, 2016 , the Company received net cash payments for income taxes from Berkshire Hathaway totaling $658 million . |
MidAmerican Energy Company [Member] | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Income Taxes | Income Taxes A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (67 ) (60 ) (73 ) (59 ) State income tax, net of federal income tax benefit (4 ) (5 ) (2 ) (1 ) Effects of ratemaking (5 ) (2 ) (7 ) (6 ) Effective income tax rate (41 )% (32 )% (47 )% (31 )% Income tax credits relate primarily to production tax credits from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity production tax credits are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Berkshire Hathaway includes BHE and subsidiaries in its United States federal income tax return. Consistent with established regulatory practice, MidAmerican Energy's provision for income taxes has been computed on a stand-alone basis, and substantially all of its currently payable or receivable income taxes are remitted to or received from BHE. MidAmerican Energy received net cash payments for income taxes from BHE totaling $7 million and $308 million for the six-month periods ended June 30, 2017 and 2016 , respectively. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Income Taxes | Income Taxes A reconciliation of the federal statutory income tax rate to MidAmerican Funding's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (71 ) (63 ) (78 ) (63 ) State income tax, net of federal income tax benefit (5 ) (5 ) (2 ) (2 ) Effects of ratemaking (5 ) (2 ) (8 ) (6 ) Other, net — — 1 Effective income tax rate (46 )% (35 )% (53 )% (35 )% Income tax credits relate primarily to production tax credits from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity production tax credits are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Berkshire Hathaway includes BHE and subsidiaries in its United States federal income tax return. Consistent with established regulatory practice, MidAmerican Funding's and MidAmerican Energy's provisions for income taxes have been computed on a stand-alone basis, and substantially all of their currently payable or receivable income taxes are remitted to or received from BHE. MidAmerican Funding received net cash payments for income taxes from BHE totaling $8 million and $313 million for the six-month periods ended June 30, 2017 and 2016 , respectively. |
Employee Benefit Plans
Employee Benefit Plans | 6 Months Ended |
Jun. 30, 2017 | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans Domestic Operations Net periodic benefit cost for the domestic pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ 6 $ 7 $ 12 $ 15 Interest cost 29 32 58 63 Expected return on plan assets (40 ) (41 ) (80 ) (81 ) Net amortization 8 13 15 24 Net periodic benefit cost $ 3 $ 11 $ 5 $ 21 Other postretirement: Service cost $ 2 $ 2 $ 4 $ 5 Interest cost 8 8 14 16 Expected return on plan assets (11 ) (10 ) (21 ) (21 ) Net amortization (4 ) (4 ) (7 ) (7 ) Net periodic benefit credit $ (5 ) $ (4 ) $ (10 ) $ (7 ) Employer contributions to the domestic pension and other postretirement benefit plans are expected to be $15 million and $5 million , respectively, during 2017 . As of June 30, 2017 , $7 million and $4 million of contributions had been made to the domestic pension and other postretirement benefit plans, respectively. Foreign Operations Net periodic benefit cost for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Service cost $ 7 $ 6 $ 13 $ 11 Interest cost 15 19 29 38 Expected return on plan assets (25 ) (29 ) (49 ) (58 ) Net amortization 16 11 33 23 Net periodic benefit cost $ 13 $ 7 $ 26 $ 14 Employer contributions to the United Kingdom pension plan are expected to be £39 million during 2017 . As of June 30, 2017 , £20 million , or $25 million , of contributions had been made to the United Kingdom pension plan. |
PacifiCorp [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans Net periodic benefit cost for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ — $ 1 $ — $ 2 Interest cost 13 13 25 27 Expected return on plan assets (18 ) (19 ) (36 ) (38 ) Net amortization 3 9 7 17 Net periodic benefit (credit) cost $ (2 ) $ 4 $ (4 ) $ 8 Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 4 4 7 8 Expected return on plan assets (5 ) (5 ) (11 ) (11 ) Net amortization (2 ) (2 ) (3 ) (3 ) Net periodic benefit credit $ (3 ) $ (3 ) $ (6 ) $ (5 ) Employer contributions to the pension and other postretirement benefit plans are expected to be $5 million and $- million, respectively, during 2017 . As of June 30, 2017 , $2 million and $- million of contributions had been made to the pension and other postretirement benefit plans, respectively. |
MidAmerican Energy Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans MidAmerican Energy sponsors a noncontributory defined benefit pension plan covering a majority of all employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. MidAmerican Energy also sponsors certain postretirement healthcare and life insurance benefits covering substantially all retired employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. Net periodic benefit cost (credit) for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ 3 $ 2 $ 5 $ 5 Interest cost 7 9 15 17 Expected return on plan assets (11 ) (11 ) (22 ) (22 ) Net amortization 1 1 1 1 Net periodic benefit cost (credit) $ — $ 1 $ (1 ) $ 1 Other postretirement: Service cost $ 1 $ 2 $ 2 $ 3 Interest cost 2 3 4 5 Expected return on plan assets (4 ) (4 ) (7 ) (7 ) Net amortization (1 ) (1 ) (2 ) (2 ) Net periodic benefit credit $ (2 ) $ — $ (3 ) $ (1 ) Employer contributions to the pension and other postretirement benefit plans are expected to be $8 million and $1 million , respectively, during 2017 . As of June 30, 2017 , $4 million and $- million of contributions had been made to the pension and other postretirement benefit plans, respectively. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans Refer to Note 6 of MidAmerican Energy's Notes to Financial Statements. |
Nevada Power Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans Nevada Power is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Nevada Power. Nevada Power contributed $1 million to the Non-Qualified Pension Plans for the six-month period ended June 30, 2017 . Amounts attributable to Nevada Power were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of June 30, December 31, 2017 2016 Qualified Pension Plan - Other long-term liabilities $ (26 ) $ (24 ) Non-Qualified Pension Plans: Other current liabilities (1 ) (1 ) Other long-term liabilities (9 ) (9 ) Other Postretirement Plans - Other long-term liabilities (4 ) (4 ) |
Sierra Pacific Power Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Employee Benefit Plans | Employee Benefit Plans Sierra Pacific is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Sierra Pacific. Sierra Pacific contributed $4 million to the Other Postretirement Plans for the six-month period ended June 30, 2017 . Amounts attributable to Sierra Pacific were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of June 30, December 31, 2017 2016 Qualified Pension Plan - Other long-term liabilities $ (13 ) $ (12 ) Non-Qualified Pension Plans: Other current liabilities (1 ) (1 ) Other long-term liabilities (9 ) (9 ) Other Postretirement Plans - Other long-term liabilities (24 ) (28 ) |
Risk Management and Hedging Act
Risk Management and Hedging Activities | 6 Months Ended |
Jun. 30, 2017 | |
Derivative [Line Items] | |
Risk Management and Hedging Activities | Risk Management and Hedging Activities The Company is exposed to the impact of market fluctuations in commodity prices, interest rates and foreign currency exchange rates. The Company is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk primarily through BHE's ownership of PacifiCorp, MidAmerican Energy Company, Nevada Power Company and Sierra Pacific Power Company (the "Utilities") as they have an obligation to serve retail customer load in their regulated service territories. The Company also provides nonregulated retail electricity and natural gas services in competitive markets. The Utilities' load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity, wholesale electricity that is purchased and sold, and natural gas supply for retail customers. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt, future debt issuances and mortgage commitments. Additionally, the Company is exposed to foreign currency exchange rate risk from its business operations and investments in Great Britain and Canada. The Company does not engage in a material amount of proprietary trading activities. Each of the Company's business platforms has established a risk management process that is designed to identify, assess, manage, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, the Company uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. The Company manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, the Company may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, forward sale commitments, or mortgage interest rate lock commitments, to mitigate the Company's exposure to interest rate risk. The Company does not hedge all of its commodity price, interest rate and foreign currency exchange rate risks, thereby exposing the unhedged portion to changes in market prices. There have been no significant changes in the Company's accounting policies related to derivatives. Refer to Note 10 for additional information on derivative contracts. The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of the Company's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of June 30, 2017 Not designated as hedging contracts: Commodity assets (1) $ 22 $ 88 $ 5 $ 1 $ 116 Commodity liabilities (1) (4 ) (1 ) (55 ) (139 ) (199 ) Interest rate assets 12 — — — 12 Interest rate liabilities — — (4 ) (7 ) (11 ) Total 30 87 (54 ) (145 ) (82 ) Designated as hedging contracts: Commodity assets — — 2 6 8 Commodity liabilities — — (13 ) (16 ) (29 ) Interest rate assets — 6 — — 6 Interest rate liabilities — — (2 ) (1 ) (3 ) Total — 6 (13 ) (11 ) (18 ) Total derivatives 30 93 (67 ) (156 ) (100 ) Cash collateral receivable — — 20 64 84 Total derivatives - net basis $ 30 $ 93 $ (47 ) $ (92 ) $ (16 ) Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of December 31, 2016 Not designated as hedging contracts: Commodity assets (1) $ 42 $ 86 $ 5 $ 2 $ 135 Commodity liabilities (1) (10 ) — (46 ) (150 ) (206 ) Interest rate assets 15 — — — 15 Interest rate liabilities — — (4 ) (6 ) (10 ) Total 47 86 (45 ) (154 ) (66 ) Designated as hedging contracts: Commodity assets 1 — 2 3 6 Commodity liabilities — — (14 ) (8 ) (22 ) Interest rate assets — 8 — — 8 Interest rate liabilities — — (3 ) — (3 ) Total 1 8 (15 ) (5 ) (11 ) Total derivatives 48 94 (60 ) (159 ) (77 ) Cash collateral receivable — — 13 61 74 Total derivatives - net basis $ 48 $ 94 $ (47 ) $ (98 ) $ (3 ) (1) The Company's commodity derivatives not designated as hedging contracts are generally included in regulated rates, and as of June 30, 2017 and December 31, 2016 , a net regulatory asset of $162 million and $148 million , respectively, was recorded related to the net derivative liability of $83 million and $71 million , respectively. The difference between the net regulatory asset and the net derivative liability relates primarily to a power purchase agreement derivative at BHE Renewables. Not Designated as Hedging Contracts The following table reconciles the beginning and ending balances of the Company's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 180 $ 253 $ 148 $ 250 Changes in fair value recognized in net regulatory assets — (49 ) 33 (13 ) Net gains (losses) reclassified to operating revenue 1 (3 ) 14 (3 ) Net losses reclassified to cost of sales (19 ) (16 ) (33 ) (49 ) Ending balance $ 162 $ 185 $ 162 $ 185 Designated as Hedging Contracts The Company uses commodity derivative contracts accounted for as cash flow hedges to hedge electricity and natural gas commodity prices for delivery to nonregulated customers, spring operational sales, natural gas storage and other transactions. Certain commodity derivative contracts have settled and the fair value at the date of settlement remains in AOCI and is recognized in earnings when the forecasted transactions impact earnings. The following table reconciles the beginning and ending balances of the Company's accumulated other comprehensive (income) loss (pre-tax) and summarizes pre-tax gains and losses on commodity derivative contracts designated and qualifying as cash flow hedges recognized in OCI, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 23 $ 72 $ 16 $ 46 Changes in fair value recognized in OCI 7 (28 ) 23 20 Net losses reclassified to cost of sales (9 ) (18 ) (18 ) (40 ) Ending balance $ 21 $ 26 $ 21 $ 26 Realized gains and losses on hedges and hedge ineffectiveness are recognized in income as operating revenue, cost of sales, operating expense or interest expense depending upon the nature of the item being hedged. For the three- and six-month periods ended June 30, 2017 and 2016 , hedge ineffectiveness was insignificant. As of June 30, 2017 , the Company had cash flow hedges with expiration dates extending through June 2026 and $13 million of pre-tax unrealized losses are forecasted to be reclassified from AOCI into earnings over the next twelve months as contracts settle. Derivative Contract Volumes The following table summarizes the net notional amounts of outstanding derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of June 30, December 31, Measure 2017 2016 Electricity purchases Megawatt hours 11 5 Natural gas purchases Decatherms 279 271 Fuel purchases Gallons 5 11 Interest rate swaps US$ 694 714 Mortgage sale commitments, net US$ (348 ) (309 ) Credit Risk The Utilities are exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent the Utilities' counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, the Utilities analyze the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, the Utilities enter into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, the Utilities exercise rights under these arrangements, including calling on the counterparty's credit support arrangement. Collateral and Contingent Features In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of June 30, 2017 , the applicable credit ratings from the three recognized credit rating agencies were investment grade. The aggregate fair value of the Company's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $194 million and $190 million as of June 30, 2017 and December 31, 2016 , respectively, for which the Company had posted collateral of $73 million and $69 million , respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of June 30, 2017 and December 31, 2016 , the Company would have been required to post $112 million and $110 million , respectively, of additional collateral. The Company's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. |
PacifiCorp [Member] | |
Derivative [Line Items] | |
Risk Management and Hedging Activities | Risk Management and Hedging Activities PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its regulated service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities. PacifiCorp has established a risk management process that is designed to identify, assess, manage, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. No interest rate derivatives were in place during the periods presented. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. There have been no significant changes in PacifiCorp's accounting policies related to derivatives. Refer to Note 7 for additional information on derivative contracts. The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of PacifiCorp's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of June 30, 2017 Not designated as hedging contracts (1) : Commodity assets $ 9 $ — $ 1 $ — $ 10 Commodity liabilities (3 ) — (22 ) (84 ) (109 ) Total 6 — (21 ) (84 ) (99 ) Total derivatives 6 — (21 ) (84 ) (99 ) Cash collateral receivable — — 15 58 73 Total derivatives - net basis $ 6 $ — $ (6 ) $ (26 ) $ (26 ) As of December 31, 2016 Not designated as hedging contracts (1) : Commodity assets $ 24 $ 2 $ 1 $ — $ 27 Commodity liabilities (6 ) — (14 ) (84 ) (104 ) Total 18 2 (13 ) (84 ) (77 ) Total derivatives 18 2 (13 ) (84 ) (77 ) Cash collateral receivable — — 10 59 69 Total derivatives - net basis $ 18 $ 2 $ (3 ) $ (25 ) $ (8 ) (1) PacifiCorp's commodity derivatives are generally included in rates and as of June 30, 2017 and December 31, 2016 , a regulatory asset of $95 million and $73 million , respectively, was recorded related to the net derivative liability of $99 million and $77 million , respectively. Not Designated as Hedging Contracts The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 103 $ 144 $ 73 $ 133 Changes in fair value recognized in net regulatory assets 6 (45 ) 30 (19 ) Net gains reclassified to operating revenue 1 2 13 10 Net losses reclassified to energy costs (15 ) (12 ) (21 ) (35 ) Ending balance $ 95 $ 89 $ 95 $ 89 Derivative Contract Volumes The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of June 30, December 31, Measure 2017 2016 Electricity sales Megawatt hours (1 ) (3 ) Natural gas purchases Decatherms 85 84 Fuel oil purchases Gallons 5 11 Credit Risk PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third-party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement. Collateral and Contingent Features In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," or in some cases terminate the contract, in the event of a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. As of June 30, 2017 , PacifiCorp's credit ratings from the three recognized credit rating agencies were investment grade. The aggregate fair value of PacifiCorp's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $102 million and $97 million as of June 30, 2017 and December 31, 2016 , respectively, for which PacifiCorp had posted collateral of $73 million and $69 million , respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of June 30, 2017 and December 31, 2016 , PacifiCorp would have been required to post $26 million and $22 million , respectively, of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation, or other factors. |
Nevada Power Company [Member] | |
Derivative [Line Items] | |
Risk Management and Hedging Activities | Risk Management and Hedging Activities Nevada Power is exposed to the impact of market fluctuations in commodity prices and interest rates. Nevada Power is principally exposed to electricity, natural gas and coal market fluctuations primarily through Nevada Power's obligation to serve retail customer load in its regulated service territory. Nevada Power's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. The actual cost of fuel and purchased power is recoverable through the deferred energy mechanism. Interest rate risk exists on variable-rate debt and future debt issuances. Nevada Power does not engage in proprietary trading activities. Nevada Power has established a risk management process that is designed to identify, assess, manage, monitor and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, Nevada Power uses commodity derivative contracts, which may include forwards, futures, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. Nevada Power manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, Nevada Power may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate Nevada Power's exposure to interest rate risk. Nevada Power does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. There have been no significant changes in Nevada Power's accounting policies related to derivatives. Refer to Note 8 for additional information on derivative contracts. The following table, which excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of Nevada Power's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Current Long-term Liabilities Liabilities Total As of June 30, 2017 Commodity liabilities (1) $ (3 ) $ (1 ) $ (4 ) As of December 31, 2016 Commodity liabilities (1) $ (7 ) $ (7 ) $ (14 ) (1) Nevada Power's commodity derivatives not designated as hedging contracts are included in regulated rates and as of June 30, 2017 and December 31, 2016 , a regulatory asset of $4 million and $14 million , respectively, was recorded related to the derivative liability of $4 million and $14 million , respectively. Derivative Contract Volumes The following table summarizes the net notional amounts of outstanding derivative contracts with indexed and fixed price terms that comprise the mark-to-market values (in millions): As of Unit of June 30, December 31, Measure 2017 2016 Electricity sales Megawatt hours — (2 ) Natural gas purchases Decatherms 123 114 Credit Risk Nevada Power is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent Nevada Power's counterparties have similar economic, industry or other characteristics and due to direct and indirect relationships among the counterparties. Before entering into a transaction, Nevada Power analyzes the financial condition of each significant wholesale counterparty, establish limits on the amount of unsecured credit to be extended to each counterparty and evaluate the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, Nevada Power enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtain third-party guarantees, letters of credit and cash deposits. If required, Nevada Power exercises rights under these arrangements, including calling on the counterparty's credit support arrangement. Collateral and Contingent Features In accordance with industry practice, certain wholesale derivative contracts contain credit support provisions that in part base certain collateral requirements on credit ratings for unsecured debt as reported by one or more of the three recognized credit rating agencies. These derivative contracts may either specifically provide rights to demand cash or other security in the event of a credit rating downgrade ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance," in the event of a material adverse change in creditworthiness. These rights can vary by contract and by counterparty. As of June 30, 2017 , credit ratings from the three recognized credit rating agencies were investment grade. The aggregate fair value of Nevada Power's derivative contracts in liability positions with specific credit-risk-related contingent features was $2 million as of June 30, 2017 and December 31, 2016 , which represents the amount of collateral to be posted if all credit risk related contingent features for derivative contracts in liability positions had been triggered. Nevada Power's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation or other factors. |
Fair Value Measurements
Fair Value Measurements | 6 Months Ended |
Jun. 30, 2017 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements The carrying value of the Company's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. The Company has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect the Company's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. The Company develops these inputs based on the best information available, including its own data. The following table presents the Company's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017 Assets: Commodity derivatives $ 2 $ 26 $ 96 $ (19 ) $ 105 Interest rate derivatives — 8 10 — 18 Mortgage loans held for sale — 408 — — 408 Money market mutual funds (2) 773 — — — 773 Debt securities: United States government obligations 161 — — — 161 International government obligations — 4 — — 4 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 270 — — — 270 International companies 1,388 — — — 1,388 Investment funds 175 — — — 175 $ 2,769 $ 485 $ 106 $ (19 ) $ 3,341 Liabilities: Commodity derivatives $ (2 ) $ (211 ) $ (15 ) $ 103 $ (125 ) Interest rate derivatives — (12 ) (2 ) — (14 ) $ (2 ) $ (223 ) $ (17 ) $ 103 $ (139 ) As of December 31, 2016 Assets: Commodity derivatives $ 5 $ 49 $ 87 $ (22 ) $ 119 Interest rate derivatives — 16 7 — 23 Mortgage loans held for sale — 359 — — 359 Money market mutual funds (2) 586 — — — 586 Debt securities: United States government obligations 161 — — — 161 International government obligations — 3 — — 3 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 2 — — 2 Equity securities: United States companies 250 — — — 250 International companies 1,190 — — — 1,190 Investment funds 147 — — — 147 $ 2,339 $ 467 $ 94 $ (22 ) $ 2,878 Liabilities: Commodity derivatives $ (2 ) $ (199 ) $ (27 ) $ 96 $ (132 ) Interest rate derivatives (1 ) (11 ) (1 ) — (13 ) $ (3 ) $ (210 ) $ (28 ) $ 96 $ (145 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $84 million and $74 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which the Company transacts. When quoted prices for identical contracts are not available, the Company uses forward price curves. Forward price curves represent the Company's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. The Company bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by the Company. Market price quotations are generally readily obtainable for the applicable term of the Company's outstanding derivative contracts; therefore, the Company's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, the Company uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 9 for further discussion regarding the Company's risk management and hedging activities. The Company's mortgage loans held for sale are valued based on independent quoted market prices, where available, or the prices of other mortgage whole loans with similar characteristics. As necessary, these prices are adjusted for typical securitization activities, including servicing value, portfolio composition, market conditions and liquidity. The Company's investments in money market mutual funds and debt and equity securities are stated at fair value and are primarily accounted for as available-for-sale securities. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Interest Auction Interest Auction Commodity Rate Rate Commodity Rate Rate Derivatives Derivatives Securities Derivatives Derivatives Securities 2017: Beginning balance $ 72 $ 9 $ — $ 60 $ 6 $ — Changes included in earnings — 39 — 12 66 — Changes in fair value recognized in OCI — — — (2 ) — — Changes in fair value recognized in net regulatory assets (3 ) — — (2 ) — — Purchases 1 — — 1 (2 ) — Settlements 11 (40 ) — 12 (62 ) — Ending balance $ 81 $ 8 $ — $ 81 $ 8 $ — Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Interest Auction Interest Auction Commodity Rate Rate Commodity Rate Rate Derivatives Derivatives Securities Derivatives Derivatives Securities 2016: Beginning balance $ 58 $ 11 $ 26 $ 47 $ 4 $ 44 Changes included in earnings (20 ) 29 — (1 ) 54 — Changes in fair value recognized in OCI 6 — 2 — — 6 Changes in fair value recognized in net regulatory assets (5 ) — — (11 ) — — Redemptions — — (10 ) — — (32 ) Settlements 5 (26 ) — 9 (44 ) — Ending balance $ 44 $ 14 $ 18 $ 44 $ 14 $ 18 The Company's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of the Company's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of the Company's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of the Company's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 36,048 $ 41,340 $ 36,116 $ 40,718 |
PacifiCorp [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements The carrying value of PacifiCorp's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. PacifiCorp has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that PacifiCorp has the ability to access at the measurement date. • Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 - Unobservable inputs reflect PacifiCorp's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. PacifiCorp develops these inputs based on the best information available, including its own data. The following table presents PacifiCorp's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017 Assets: Commodity derivatives $ — $ 10 $ — $ (4 ) $ 6 Money market mutual funds (2) 167 — — — 167 Investment funds 19 — — — 19 $ 186 $ 10 $ — $ (4 ) $ 192 Liabilities - Commodity derivatives $ — $ (109 ) $ — $ 77 $ (32 ) As of December 31, 2016 Assets: Commodity derivatives $ — $ 27 $ — $ (7 ) $ 20 Money market mutual funds (2) 13 — — — 13 Investment funds 17 — — — 17 $ 30 $ 27 $ — $ (7 ) $ 50 Liabilities - Commodity derivatives $ — $ (104 ) $ — $ 76 $ (28 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $73 million and $69 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first six years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first six years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 6 for further discussion regarding PacifiCorp's risk management and hedging activities. PacifiCorp's investments in money market mutual funds and investment funds are stated at fair value and are primarily accounted for as available-for-sale securities. When available, PacifiCorp uses a readily observable quoted market price or net asset value of an identical security in an active market to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 7,004 $ 8,260 $ 7,052 $ 8,204 |
MidAmerican Energy Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements The carrying value of MidAmerican Energy's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. MidAmerican Energy has various financial assets and liabilities that are measured at fair value on the Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that MidAmerican Energy has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect MidAmerican Energy's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. MidAmerican Energy develops these inputs based on the best information available, including its own data. The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017: Assets: Commodity derivatives $ — $ 2 $ 2 $ (2 ) $ 2 Money market mutual funds (2) 370 — — — 370 Debt securities: United States government obligations 161 — — — 161 International government obligations — 4 — — 4 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 270 — — — 270 International companies 7 — — — 7 Investment funds 14 — — — 14 $ 822 $ 45 $ 2 $ (2 ) $ 867 Liabilities - commodity derivatives $ — $ (6 ) $ (3 ) $ 3 $ (6 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2016: Assets: Commodity derivatives $ — $ 9 $ 1 $ (2 ) $ 8 Money market mutual funds (2) 1 — — — 1 Debt securities: United States government obligations 161 — — — 161 International government obligations — 3 — — 3 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 2 — — 2 Equity securities: United States companies 250 — — — 250 International companies 5 — — — 5 Investment funds 9 — — — 9 $ 426 $ 52 $ 1 $ (2 ) $ 477 Liabilities - commodity derivatives $ — $ (3 ) $ (3 ) $ 3 $ (3 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $1 million and $1 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted cash and investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which MidAmerican Energy transacts. When quoted prices for identical contracts are not available, MidAmerican Energy uses forward price curves. Forward price curves represent MidAmerican Energy's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. MidAmerican Energy bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by MidAmerican Energy. Market price quotations are generally readily obtainable for the applicable term of MidAmerican Energy's outstanding derivative contracts; therefore, MidAmerican Energy's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, MidAmerican Energy uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, related volatility, counterparty creditworthiness and duration of contracts. MidAmerican Energy's investments in money market mutual funds and debt and equity securities are stated at fair value and are primarily accounted for as available-for-sale securities. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. The fair value of MidAmerican Energy's investments in auction rate securities, where there is no current liquid market, is determined using pricing models based on available observable market data and MidAmerican Energy's judgment about the assumptions, including liquidity and nonperformance risks, which market participants would use when pricing the asset. The following table reconciles the beginning and ending balances of MidAmerican Energy's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Commodity Derivatives Auction Rate Securities Commodity Derivatives Auction Rate Securities 2017: Beginning balance $ 1 $ — $ (2 ) $ — Changes in fair value recognized in net regulatory assets (2 ) — — — Settlements — — 1 — Ending balance $ (1 ) $ — $ (1 ) $ — 2016: Beginning balance $ (4 ) $ 26 $ (6 ) $ 26 Transfer to affiliate — — (4 ) — Changes in fair value recognized in OCI — 2 — 3 Changes in fair value recognized in net regulatory assets (3 ) — (4 ) — Redemptions — (10 ) — (11 ) Settlements 5 — 12 — Ending balance $ (2 ) $ 18 $ (2 ) $ 18 MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 4,893 $ 5,438 $ 4,301 $ 4,735 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements Refer to Note 7 of MidAmerican Energy's Notes to Financial Statements. MidAmerican Funding's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 5,219 $ 5,867 $ 4,627 $ 5,164 |
Nevada Power Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements The carrying value of Nevada Power's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Nevada Power has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Nevada Power has the ability to access at the measurement date. • Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 - Unobservable inputs reflect Nevada Power's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Nevada Power develops these inputs based on the best information available, including its own data. The following table presents Nevada Power's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of June 30, 2017 Assets - investment funds $ 2 $ — $ — $ 2 Liabilities - commodity derivatives $ — $ — $ (4 ) $ (4 ) As of December 31, 2016 Assets: Money market mutual funds (1) $ 220 $ — $ — $ 220 Investment funds 6 — — 6 $ 226 $ — $ — $ 226 Liabilities - commodity derivatives $ — $ — $ (14 ) $ (14 ) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of June 30, 2017 and December 31, 2016 , had an immaterial impact to the fair value of its derivative contracts. As such, Nevada Power considers its derivative contracts to be valued using Level 3 inputs. Refer to Note 7 for further discussion regarding Nevada Power's risk management and hedging activities. Nevada Power's investments in money market mutual funds and equity securities are accounted for as available-for-sale securities and are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ (14 ) $ (22 ) $ (14 ) $ (22 ) Changes in fair value recognized in regulatory assets (1 ) (2 ) (2 ) (5 ) Settlements 11 2 12 5 Ending balance $ (4 ) $ (22 ) $ (4 ) $ (22 ) Nevada Power's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Nevada Power's long‑term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Nevada Power's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Nevada Power's long‑term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,598 $ 3,067 $ 2,581 $ 3,040 |
Sierra Pacific Power Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value Measurements | Fair Value Measurements The carrying value of Sierra Pacific's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Sierra Pacific has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Sierra Pacific has the ability to access at the measurement date. • Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 - Unobservable inputs reflect Sierra Pacific's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Sierra Pacific develops these inputs based on the best information available, including its own data. The following table presents Sierra Pacific's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of June 30, 2017 Assets - investment funds $ — $ — $ — $ — As of December 31, 2016 Assets: Money market mutual funds (1) $ 35 $ — $ — $ 35 Investment funds 1 — — 1 $ 36 $ — $ — $ 36 (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Sierra Pacific's investments in money market mutual funds and equity securities are accounted for as available-for-sale securities and are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. Sierra Pacific's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Sierra Pacific's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Sierra Pacific's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,121 $ 1,204 $ 1,119 $ 1,191 |
Commitments and Contingencies
Commitments and Contingencies | 6 Months Ended |
Jun. 30, 2017 | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies Fuel, Capacity and Transmission Contract Commitments During the six-month period ended June 30, 2017 , MidAmerican Energy amended certain of its natural gas supply and transportation contracts increasing minimum payments by $247 million through 2021 and $70 million for 2022 through 2041. Construction Commitments During the six-month period ended June 30, 2017 , MidAmerican Energy entered into contracts totaling $514 million for the construction of wind-powered generating facilities in 2017 through 2019, including $222 million in 2017, $284 million in 2018 and $8 million in 2019. Operating Leases and Easements During the six-month period ended June 30, 2017 , MidAmerican Energy entered into non-cancelable easements with minimum payments totaling $114 million through 2057 for land in Iowa on which some of its wind-powered generating facilities will be located. Legal Matters The Company is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. The Company does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. The Company is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts and are described below. Environmental Laws and Regulations The Company is subject to federal, state, local and foreign laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact the Company's current and future operations. The Company believes it is in material compliance with all applicable laws and regulations. Hydroelectric Relicensing PacifiCorp's Klamath hydroelectric system is currently operating under annual licenses with the FERC. In February 2010, PacifiCorp, the United States Department of the Interior, the United States Department of Commerce, the state of California, the state of Oregon and various other governmental and non-governmental settlement parties signed the Klamath Hydroelectric Settlement Agreement ("KHSA"). Congress failed to pass legislation needed to implement the original KHSA. On April 6, 2016, PacifiCorp, the states of California and Oregon and the United States Departments of the Interior and Commerce and other stakeholders executed an amendment to the KHSA. Consistent with the terms of the amended KHSA, on September 23, 2016, PacifiCorp and the Klamath River Renewal Corporation ("KRRC") jointly filed an application with the FERC to transfer the license for the four mainstem Klamath River hydroelectric generating facilities from PacifiCorp to the KRRC. Also on September 23, 2016, the KRRC filed an application with the FERC to surrender the license and decommission the facilities. The KRRC's license surrender application included a request for the FERC to refrain from acting on the surrender application until after the transfer of the license to the KRRC is effective. Under the amended KHSA, PacifiCorp and its customers are protected from uncapped dam removal costs and liabilities. The KRRC must indemnify PacifiCorp from liabilities associated with dam removal. The amended KHSA also limits PacifiCorp's contribution to facilities removal costs to no more than $200 million , of which up to $184 million would be collected from PacifiCorp's Oregon customers with the remainder to be collected from PacifiCorp's California customers. California voters approved a water bond measure in November 2014 from which the state of California's contribution towards facilities removal costs are being drawn. In accordance with this bond measure, additional funding of up to $250 million for facilities removal costs was included in the California state budget in 2016, with the funding effective for at least five years. If facilities removal costs exceed the combined funding that will be available from PacifiCorp's Oregon and California customers and the state of California, sufficient funds would need to be provided by the KRRC or an entity other than PacifiCorp for removal to proceed. If certain conditions in the amended KHSA are not satisfied and the license does not transfer to the KRRC, PacifiCorp will resume relicensing with the FERC. Guarantees The Company has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on the Company's consolidated financial results. |
PacifiCorp [Member] | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies Legal Matters PacifiCorp is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. PacifiCorp does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Environmental Laws and Regulations PacifiCorp is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. PacifiCorp believes it is in material compliance with all applicable laws and regulations. Hydroelectric Relicensing PacifiCorp's Klamath hydroelectric system is currently operating under annual licenses with the Federal Energy Regulatory Commission ("FERC"). In February 2010, PacifiCorp, the United States Department of the Interior, the United States Department of Commerce, the state of California, the state of Oregon and various other governmental and non-governmental settlement parties signed the Klamath Hydroelectric Settlement Agreement ("KHSA"). Congress failed to pass legislation needed to implement the original KHSA. On April 6, 2016, PacifiCorp, the states of California and Oregon, and the United States Departments of the Interior and Commerce and other stakeholders executed an amendment to the KHSA. Consistent with the terms of the amended KHSA, on September 23, 2016, PacifiCorp and the Klamath River Renewal Corporation ("KRRC") jointly filed an application with the FERC to transfer the license for the four mainstem Klamath River hydroelectric generating facilities from PacifiCorp to the KRRC. Also on September 23, 2016, the KRRC filed an application with the FERC to surrender the license and decommission the facilities. The KRRC's license surrender application included a request for the FERC to refrain from acting on the surrender application until after the transfer of the license to the KRRC is effective. Under the amended KHSA, PacifiCorp and its customers are protected from uncapped dam removal costs and liabilities. The KRRC must indemnify PacifiCorp from liabilities associated with dam removal. The amended KHSA also limits PacifiCorp's contribution to facilities removal costs to no more than $200 million , of which up to $184 million would be collected from PacifiCorp's Oregon customers with the remainder to be collected from PacifiCorp's California customers. California voters approved a water bond measure in November 2014 from which the state of California's contribution toward facilities removal costs are being drawn. In accordance with this bond measure, additional funding of up to $250 million for facilities removal costs was included in the California state budget in 2016, with the funding effective for at least five years. If facilities removal costs exceed the combined funding that will be available from PacifiCorp's Oregon and California customers and the state of California, sufficient funds would need to be provided by the KRRC or an entity other than PacifiCorp for removal to proceed. If certain conditions in the amended KHSA are not satisfied and the license does not transfer to the KRRC, PacifiCorp will resume relicensing with the FERC. Guarantees PacifiCorp has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on PacifiCorp's consolidated financial results. |
MidAmerican Energy Company [Member] | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies Natural Gas Commitments During the six-month period ended June 30, 2017 , MidAmerican Energy amended certain of its natural gas supply and transportation contracts increasing minimum payments by $247 million through 2021 and $70 million for 2022 through 2041. Construction Commitments During the six-month period ended June 30, 2017 , MidAmerican Energy entered into contracts totaling $514 million for the construction of wind-powered generating facilities in 2017 through 2019, including $222 million in 2017, $284 million in 2018 and $8 million in 2019. Easements During the six-month period ended June 30, 2017 , MidAmerican Energy entered into non-cancelable easements with minimum payments totaling $114 million through 2057 for land in Iowa on which some of its wind-powered generating facilities will be located. Legal Matters MidAmerican Energy is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Energy does not believe that such normal and routine litigation will have a material impact on its financial results. Environmental Laws and Regulations MidAmerican Energy is subject to federal, state and local laws and regulations regarding air and water quality, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. MidAmerican Energy believes it is in material compliance with all applicable laws and regulations. Transmission Rates MidAmerican Energy's wholesale transmission rates are set annually using FERC-approved formula rates subject to true-up for actual cost of service. Prior to September 2016, the rates in effect were based on a 12.38% return on equity ("ROE"). In November 2013 and February 2015, a coalition of intervenors filed successive complaints with the FERC requesting that the 12.38% ROE no longer be found just and reasonable and sought to reduce the base ROE to 9.15% and 8.67% , respectively. MidAmerican Energy is authorized by the FERC to include a 0.50% adder beyond the base ROE effective January 2015. In September 2016, the FERC issued an order for the first complaint, which reduces the base ROE to 10.32% and requires refunds, plus interest, for the period from November 2013 through February 2015. Customer refunds relative to the first complaint occurred in February 2017. The FERC is expected to rule on the second complaint in 2017, covering the period from February 2015 through May 2016. MidAmerican Energy believes it is probable that the FERC will order a base ROE lower than 12.38% in the second complaint and, as of June 30, 2017 , has accrued a $9 million liability for refunds under the second complaint of amounts collected under the higher ROE from February 2015 through May 2016. |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies MidAmerican Funding is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Funding does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Refer to Note 8 of MidAmerican Energy's Notes to Financial Statements. |
Nevada Power Company [Member] | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies Environmental Laws and Regulations Nevada Power is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. Nevada Power believes it is in material compliance with all applicable laws and regulations. Senate Bill 123 In June 2013, the Nevada State Legislature passed Senate Bill No. 123 ("SB 123"), which included the retirement of coal plants and replacing the capacity with renewable facilities and other generating facilities. In May 2014, Nevada Power filed its Emissions Reduction Capacity Replacement Plan ("ERCR Plan") in compliance with SB 123. In July 2015, Nevada Power filed an amendment to its ERCR Plan with the PUCN which was approved in September 2015. In June 2015, the Nevada State Legislature passed Assembly Bill No. 498, which modified the capacity replacement components of SB 123. Consistent with the ERCR Plan, Nevada Power acquired a 272 -MW natural gas co-generating facility in 2014, acquired a 210 -MW natural gas peaking facility in 2014, constructed a 15 -MW solar photovoltaic facility in 2015, contracted two renewable power purchase agreements with 100 -MW solar photovoltaic generating facilities in 2015, contracted a renewable power purchase agreement with 100 -MW solar photovoltaic generating facility in 2016 and acquired the remaining 130 MW, 25% , of the Silverhawk natural gas-fueled generating facility in April 2017, of which 54 MW were approved as part of the ERCR Plan. Nevada Power has the option to acquire 35 MW of nameplate renewable energy capacity in the future under the ERCR Plan, subject to PUCN approval. Nevada Power retired Reid Gardner Units 1, 2, and 3, 300 MW of coal-fueled generation, in 2014 and Reid Gardner Unit 4, 257 MW of coal-fueled generation, in March 2017. These transactions are related to Nevada Power's compliance with SB 123, resulting in the retirement of 812 MW of coal-fueled generation by 2019. Legal Matters Nevada Power is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Nevada Power does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. |
Sierra Pacific Power Company [Member] | |
Loss Contingencies [Line Items] | |
Commitments and Contingencies | Commitments and Contingencies Environmental Laws and Regulations Sierra Pacific is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Sierra Pacific's current and future operations. Sierra Pacific believes it is in material compliance with all applicable laws and regulations. Legal Matters Sierra Pacific is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Sierra Pacific does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. |
Components of Accumulated Other
Components of Accumulated Other Comprehensive Loss, Net | 6 Months Ended |
Jun. 30, 2017 | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Components of Accumulated Other Comprehensive Income (Loss), Net | Components of Other Comprehensive Income (Loss), Net The following table shows the change in AOCI attributable to BHE shareholders by each component of OCI, net of applicable income taxes (in millions): Unrealized Unrecognized Foreign Gains on Unrealized AOCI Amounts on Currency Available- Gains (Losses) Attributable Retirement Translation For-Sale on Cash To BHE Benefits Adjustment Securities Flow Hedges Shareholders, Net Balance, December 31, 2015 $ (438 ) $ (1,092 ) $ 615 $ 7 $ (908 ) Other comprehensive income (loss) 62 (205 ) 71 1 (71 ) Balance, June 30, 2016 $ (376 ) $ (1,297 ) $ 686 $ 8 $ (979 ) Balance, December 31, 2016 $ (447 ) $ (1,675 ) $ 585 $ 26 $ (1,511 ) Other comprehensive income (loss) 1 308 119 (6 ) 422 Balance, June 30, 2017 $ (446 ) $ (1,367 ) $ 704 $ 20 $ (1,089 ) Reclassifications from AOCI to net income for the periods ended June 30, 2017 and 2016 were insignificant. For information regarding cash flow hedge reclassifications from AOCI to net income in their entirety, refer to Note 9 . Additionally, refer to the "Foreign Operations" discussion in Note 8 for information about unrecognized amounts on retirement benefits reclassifications from AOCI that do not impact net income in their entirety. |
MidAmerican Energy Company [Member] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Components of Accumulated Other Comprehensive Income (Loss), Net | Components of Accumulated Other Comprehensive Income (Loss), Net The following table shows the change in accumulated other comprehensive income (loss), net ("AOCI") by each component of other comprehensive income, net of applicable income taxes (in millions): Unrealized Unrealized Accumulated Losses on Losses Other Available-For-Sale on Cash Flow Comprehensive Securities Hedges Loss, Net Balance, December 31, 2015 $ (3 ) $ (27 ) $ (30 ) Other comprehensive income 2 — 2 Dividend — 27 27 Balance at June 30, 2016 $ (1 ) $ — $ (1 ) |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Components of Accumulated Other Comprehensive Income (Loss), Net | Components of Accumulated Other Comprehensive Income (Loss), Net Refer to Note 9 of MidAmerican Energy's Notes to Financial Statements. |
Segment Information
Segment Information | 6 Months Ended |
Jun. 30, 2017 | |
Segment Reporting Information [Line Items] | |
Segment Reporting Disclosure [Text Block] | Segment Information The Company's reportable segments with foreign operations include Northern Powergrid , whose business is principally in the United Kingdom, BHE Transmission , whose business includes operations in Canada, and BHE Renewables , whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: PacifiCorp $ 1,245 $ 1,233 $ 2,526 $ 2,485 MidAmerican Funding 659 585 1,355 1,211 NV Energy 753 707 1,337 1,322 Northern Powergrid 219 249 464 528 BHE Pipeline Group 192 188 507 503 BHE Transmission 158 (18 ) 324 140 BHE Renewables 220 170 364 309 HomeServices 956 841 1,541 1,332 BHE and Other (1) 152 166 302 332 Total operating revenue $ 4,554 $ 4,121 $ 8,720 $ 8,162 Depreciation and amortization: PacifiCorp $ 202 $ 199 $ 398 $ 396 MidAmerican Funding 141 110 258 220 NV Energy 106 105 210 209 Northern Powergrid 52 50 101 100 BHE Pipeline Group 43 54 73 107 BHE Transmission 53 66 107 116 BHE Renewables 63 56 124 112 HomeServices 10 9 22 15 BHE and Other (1) — (1 ) (1 ) (1 ) Total depreciation and amortization $ 670 $ 648 $ 1,292 $ 1,274 Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating income: PacifiCorp $ 338 $ 339 $ 683 $ 663 MidAmerican Funding 136 140 243 240 NV Energy 191 173 289 262 Northern Powergrid 94 125 227 283 BHE Pipeline Group 55 60 263 252 BHE Transmission 73 (122 ) 150 (46 ) BHE Renewables 84 52 99 76 HomeServices 110 93 112 92 BHE and Other (1) (32 ) (6 ) (46 ) (15 ) Total operating income 1,049 854 2,020 1,807 Interest expense (457 ) (468 ) (915 ) (941 ) Capitalized interest 10 103 20 114 Allowance for equity funds 18 115 35 130 Interest and dividend income 27 27 53 54 Other, net (3 ) 1 22 11 Total income before income tax expense and equity income $ 644 $ 632 $ 1,235 $ 1,175 Interest expense: PacifiCorp $ 95 $ 96 $ 190 $ 191 MidAmerican Funding 59 55 118 109 NV Energy 58 63 116 130 Northern Powergrid 33 36 64 72 BHE Pipeline Group 10 13 22 26 BHE Transmission 39 38 80 74 BHE Renewables 52 48 102 97 HomeServices 1 — 2 1 BHE and Other (1) 110 119 221 241 Total interest expense $ 457 $ 468 $ 915 $ 941 Operating revenue by country: United States $ 4,177 $ 3,889 $ 7,924 $ 7,488 United Kingdom 219 249 464 528 Canada 158 (17 ) 324 143 Philippines and other — — 8 3 Total operating revenue by country $ 4,554 $ 4,121 $ 8,720 $ 8,162 Income before income tax expense and equity income by country: United States $ 529 $ 498 $ 952 $ 856 United Kingdom 62 91 164 210 Canada 38 28 80 71 Philippines and other 15 15 39 38 Total income before income tax expense and equity income by country $ 644 $ 632 $ 1,235 $ 1,175 As of June 30, December 31, 2017 2016 Total assets: PacifiCorp $ 23,626 $ 23,563 MidAmerican Funding 18,261 17,571 NV Energy 14,188 14,320 Northern Powergrid 6,940 6,433 BHE Pipeline Group 4,900 5,144 BHE Transmission 8,794 8,378 BHE Renewables 7,643 7,010 HomeServices 2,061 1,776 BHE and Other (1) 1,396 1,245 Total assets $ 87,809 $ 85,440 (1) The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other , relate principally to other entities, corporate functions and intersegment eliminations. The following table shows the change in the carrying amount of goodwill by reportable segment for the six-month period ended June 30, 2017 (in millions): BHE MidAmerican NV Northern Pipeline BHE BHE Home- PacifiCorp Funding Energy Powergrid Group Transmission Renewables Services Total December 31, 2016 $ 1,129 $ 2,102 $ 2,369 $ 930 $ 75 $ 1,470 $ 95 $ 840 $ 9,010 Acquisitions — — — — — — — 106 106 Foreign currency translation — — — 36 — 54 — — 90 Other — — — — (2 ) — — — (2 ) June 30, 2017 $ 1,129 $ 2,102 $ 2,369 $ 966 $ 73 $ 1,524 $ 95 $ 946 $ 9,204 |
MidAmerican Energy Company [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Disclosure [Text Block] | Segment Information MidAmerican Energy has identified two reportable segments: regulated electric and regulated gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 537 $ 481 $ 970 $ 880 Regulated gas 120 102 382 328 Other 1 1 1 1 Total operating revenue $ 658 $ 584 $ 1,353 $ 1,209 Depreciation and amortization: Regulated electric $ 130 $ 100 $ 237 $ 199 Regulated gas 11 10 21 21 Total depreciation and amortization $ 141 $ 110 $ 258 $ 220 Operating income: Regulated electric $ 128 $ 135 $ 195 $ 192 Regulated gas 7 4 47 47 Total operating income $ 135 $ 139 $ 242 $ 239 As of June 30, December 31, Total assets: Regulated electric $ 14,871 $ 14,113 Regulated gas 1,269 1,345 Other 1 1 Total assets $ 16,141 $ 15,459 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Disclosure [Text Block] | Segment Information MidAmerican Funding has identified two reportable segments: regulated electric and regulated gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists of the financial results and assets of nonregulated operations, MHC and MidAmerican Funding. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 537 $ 481 $ 970 $ 880 Regulated gas 120 102 382 328 Other 2 2 3 3 Total operating revenue $ 659 $ 585 $ 1,355 $ 1,211 Depreciation and amortization: Regulated electric $ 130 $ 100 $ 237 $ 199 Regulated gas 11 10 21 21 Total depreciation and amortization $ 141 $ 110 $ 258 $ 220 Operating income: Regulated electric $ 128 $ 135 $ 195 $ 192 Regulated gas 7 4 47 47 Other 1 1 1 1 Total operating income $ 136 $ 140 $ 243 $ 240 As of June 30, December 31, Total assets (1) : Regulated electric $ 16,062 $ 15,304 Regulated gas 1,348 1,424 Other 23 19 Total assets $ 17,433 $ 16,747 (1) Total assets by reportable segment reflect the assignment of goodwill to applicable reporting units. |
Sierra Pacific Power Company [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Disclosure [Text Block] | Segment Information Sierra Pacific has identified two reportable operating segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by the PUCN; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Sierra Pacific believes presenting gross margin allows the reader to assess the impact of Sierra Pacific's regulatory treatment and its overall regulatory environment on a consistent basis and is meaningful. Gross margin is calculated as operating revenue less cost of fuel, energy and capacity and natural gas purchased for resale ("cost of sales"). The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 160 $ 162 $ 319 $ 332 Regulated gas 17 19 51 66 Total operating revenue $ 177 $ 181 $ 370 $ 398 Cost of sales: Regulated electric $ 61 $ 65 $ 117 $ 135 Regulated gas 6 7 22 37 Total cost of sales $ 67 $ 72 $ 139 $ 172 Gross margin: Regulated electric $ 99 $ 97 $ 202 $ 197 Regulated gas 11 12 29 29 Total gross margin $ 110 $ 109 $ 231 $ 226 Operating and maintenance: Regulated electric $ 36 $ 40 $ 72 $ 76 Regulated gas 4 5 9 10 Total operating and maintenance $ 40 $ 45 $ 81 $ 86 Depreciation and amortization: Regulated electric $ 24 $ 25 $ 49 $ 50 Regulated gas 4 4 7 8 Total depreciation and amortization $ 28 $ 29 $ 56 $ 58 Operating income: Regulated electric $ 34 $ 26 $ 70 $ 59 Regulated gas 2 2 12 10 Total operating income $ 36 $ 28 $ 82 $ 69 Interest expense: Regulated electric $ 10 $ 13 $ 20 $ 27 Regulated gas 1 1 2 3 Total interest expense $ 11 $ 14 $ 22 $ 30 As of June 30, December 31, 2017 2016 Total assets: Regulated electric $ 3,117 $ 3,119 Regulated gas 306 314 Regulated common assets (1) 11 60 Total assets $ 3,434 $ 3,493 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments. |
Related Party Transactions Rela
Related Party Transactions Related Party Transactions (Notes) | 6 Months Ended |
Jun. 30, 2017 | |
PacifiCorp [Member] | |
Related Party Transaction [Line Items] | |
Related Party Transactions Disclosure [Text Block] | Berkshire Hathaway includes BHE and its subsidiaries in its United States federal income tax return. Consistent with established regulatory practice, PacifiCorp's provision for income taxes has been computed on a stand-alone basis, and substantially all of its currently payable or receivable income taxes are remitted to or received from BHE. For the six-month periods ended June 30, 2017 and 2016, PacifiCorp made net cash payments for federal and state income taxes to BHE totaling $3 million and $65 million , respectively. |
Property, Plant and Equipment52
Property, Plant and Equipment, Net (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Property, Plant and Equipment [Line Items] | |
Property, Plant and Equipment [Table Text Block] | Property, plant and equipment, net consists of the following (in millions): As of Depreciable June 30, December 31, Life 2017 2016 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 72,317 $ 71,536 Interstate natural gas pipeline assets 3-80 years 6,969 6,942 79,286 78,478 Accumulated depreciation and amortization (24,029 ) (23,603 ) Regulated assets, net 55,257 54,875 Nonregulated assets: Independent power plants 5-30 years 5,880 5,594 Other assets 3-30 years 1,164 1,002 7,044 6,596 Accumulated depreciation and amortization (1,222 ) (1,060 ) Nonregulated assets, net 5,822 5,536 Net operating assets 61,079 60,411 Construction work-in-progress 2,607 2,098 Property, plant and equipment, net $ 63,686 $ 62,509 |
MidAmerican Energy Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Public Utility Property, Plant, and Equipment | Property, plant and equipment, net consists of the following (in millions): As of June 30, December 31, Depreciable Life 2017 2016 Utility plant in service, net: Generation 20-70 years $ 11,308 $ 11,282 Transmission 52-75 years 1,794 1,726 Electric distribution 20-75 years 3,260 3,197 Gas distribution 29-75 years 1,588 1,565 Utility plant in service 17,950 17,770 Accumulated depreciation and amortization (5,660 ) (5,448 ) Utility plant in service, net 12,290 12,322 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1 ) (1 ) Nonregulated property, net 6 6 12,296 12,328 Construction work-in-progress 746 493 Property, plant and equipment, net $ 13,042 $ 12,821 |
PacifiCorp [Member] | |
Property, Plant and Equipment [Line Items] | |
Public Utility Property, Plant, and Equipment | Property, plant and equipment, net consists of the following (in millions): As of June 30, December 31, Depreciable Life 2017 2016 Property, plant and equipment in-service 5-75 years $ 27,505 $ 27,298 Accumulated depreciation and amortization (9,074 ) (8,793 ) Net property, plant and equipment in-service 18,431 18,505 Construction work-in-progress 710 657 Total property, plant and equipment, net $ 19,141 $ 19,162 |
Nevada Power Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Public Utility Property, Plant, and Equipment | Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life June 30, December 31, 2017 2016 Utility plant: Generation 30 - 55 years $ 3,741 $ 4,271 Distribution 20 - 65 years 3,279 3,231 Transmission 45 - 65 years 1,861 1,846 General and intangible plant 5 - 65 years 773 738 Utility plant 9,654 10,086 Accumulated depreciation and amortization (2,791 ) (3,205 ) Utility plant, net 6,863 6,881 Other non-regulated, net of accumulated depreciation and amortization 45 years 2 2 Plant, net 6,865 6,883 Construction work-in-progress 60 114 Property, plant and equipment, net $ 6,925 $ 6,997 |
Sierra Pacific Power Company [Member] | |
Property, Plant and Equipment [Line Items] | |
Public Utility Property, Plant, and Equipment | Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life June 30, December 31, 2017 2016 Utility plant: Electric generation 25 - 60 years $ 1,140 $ 1,137 Electric distribution 20 - 100 years 1,436 1,417 Electric transmission 50 - 100 years 774 771 Electric general and intangible plant 5 - 70 years 176 164 Natural gas distribution 35 - 70 years 385 381 Natural gas general and intangible plant 5 - 70 years 14 15 Common general 5 - 70 years 283 267 Utility plant 4,208 4,152 Accumulated depreciation and amortization (1,479 ) (1,442 ) Utility plant, net 2,729 2,710 Other non-regulated, net of accumulated depreciation and amortization 70 years 5 5 Plant, net 2,734 2,715 Construction work-in-progress 107 107 Property, plant and equipment, net $ 2,841 $ 2,822 |
Investments and Restricted Ca53
Investments and Restricted Cash and Investments (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Investments and Restricted Cash and Investments [Abstract] | |
Investments and Restricted Cash and Investments | Investments and restricted cash and investments consists of the following (in millions): As of June 30, December 31, 2017 2016 Investments: BYD Company Limited common stock $ 1,381 $ 1,185 Rabbi trusts 427 403 Other 128 106 Total investments 1,936 1,694 Equity method investments: BHE Renewables tax equity investments 811 741 Electric Transmission Texas, LLC 694 672 Bridger Coal Company 150 165 Other 143 142 Total equity method investments 1,798 1,720 Restricted cash and investments: Quad Cities Station nuclear decommissioning trust funds 485 460 Other 238 282 Total restricted cash and investments 723 742 Total investments and restricted cash and investments $ 4,457 $ 4,156 Reflected as: Other current assets $ 196 $ 211 Noncurrent assets 4,261 3,945 Total investments and restricted cash and investments $ 4,457 $ 4,156 |
Income Taxes (Tables)
Income Taxes (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (19 ) (12 ) (17 ) (13 ) State income tax, net of federal income tax benefit 1 1 (2 ) (1 ) Income tax effect of foreign income (5 ) (6 ) (5 ) (5 ) Equity income 1 2 1 2 Other, net — (1 ) (1 ) (1 ) Effective income tax rate 13 % 19 % 11 % 17 % |
MidAmerican Energy Company [Member] | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (67 ) (60 ) (73 ) (59 ) State income tax, net of federal income tax benefit (4 ) (5 ) (2 ) (1 ) Effects of ratemaking (5 ) (2 ) (7 ) (6 ) Effective income tax rate (41 )% (32 )% (47 )% (31 )% |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Schedule of Effective Income Tax Rate Reconciliation [Line Items] | |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of the federal statutory income tax rate to MidAmerican Funding's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Federal statutory income tax rate 35 % 35 % 35 % 35 % Income tax credits (71 ) (63 ) (78 ) (63 ) State income tax, net of federal income tax benefit (5 ) (5 ) (2 ) (2 ) Effects of ratemaking (5 ) (2 ) (8 ) (6 ) Other, net — — 1 Effective income tax rate (46 )% (35 )% (53 )% (35 )% |
Employee Benefit Plans (Tables)
Employee Benefit Plans (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Defined Benefit Plan Disclosure [Line Items] | |
Schedule of Defined Benefit Plans Disclosures | Foreign Operations Net periodic benefit cost for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Service cost $ 7 $ 6 $ 13 $ 11 Interest cost 15 19 29 38 Expected return on plan assets (25 ) (29 ) (49 ) (58 ) Net amortization 16 11 33 23 Net periodic benefit cost $ 13 $ 7 $ 26 $ 14 Domestic Operations Net periodic benefit cost for the domestic pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ 6 $ 7 $ 12 $ 15 Interest cost 29 32 58 63 Expected return on plan assets (40 ) (41 ) (80 ) (81 ) Net amortization 8 13 15 24 Net periodic benefit cost $ 3 $ 11 $ 5 $ 21 Other postretirement: Service cost $ 2 $ 2 $ 4 $ 5 Interest cost 8 8 14 16 Expected return on plan assets (11 ) (10 ) (21 ) (21 ) Net amortization (4 ) (4 ) (7 ) (7 ) Net periodic benefit credit $ (5 ) $ (4 ) $ (10 ) $ (7 ) |
PacifiCorp [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Schedule of Defined Benefit Plans Disclosures | Net periodic benefit cost for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ — $ 1 $ — $ 2 Interest cost 13 13 25 27 Expected return on plan assets (18 ) (19 ) (36 ) (38 ) Net amortization 3 9 7 17 Net periodic benefit (credit) cost $ (2 ) $ 4 $ (4 ) $ 8 Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 4 4 7 8 Expected return on plan assets (5 ) (5 ) (11 ) (11 ) Net amortization (2 ) (2 ) (3 ) (3 ) Net periodic benefit credit $ (3 ) $ (3 ) $ (6 ) $ (5 ) |
MidAmerican Energy Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Schedule of Defined Benefit Plans Disclosures | Net periodic benefit cost (credit) for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Pension: Service cost $ 3 $ 2 $ 5 $ 5 Interest cost 7 9 15 17 Expected return on plan assets (11 ) (11 ) (22 ) (22 ) Net amortization 1 1 1 1 Net periodic benefit cost (credit) $ — $ 1 $ (1 ) $ 1 Other postretirement: Service cost $ 1 $ 2 $ 2 $ 3 Interest cost 2 3 4 5 Expected return on plan assets (4 ) (4 ) (7 ) (7 ) Net amortization (1 ) (1 ) (2 ) (2 ) Net periodic benefit credit $ (2 ) $ — $ (3 ) $ (1 ) |
Nevada Power Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Schedule of Amounts Recognized in Balance Sheet | Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of June 30, December 31, 2017 2016 Qualified Pension Plan - Other long-term liabilities $ (26 ) $ (24 ) Non-Qualified Pension Plans: Other current liabilities (1 ) (1 ) Other long-term liabilities (9 ) (9 ) Other Postretirement Plans - Other long-term liabilities (4 ) (4 ) |
Sierra Pacific Power Company [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Schedule of Amounts Recognized in Balance Sheet | Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of June 30, December 31, 2017 2016 Qualified Pension Plan - Other long-term liabilities $ (13 ) $ (12 ) Non-Qualified Pension Plans: Other current liabilities (1 ) (1 ) Other long-term liabilities (9 ) (9 ) Other Postretirement Plans - Other long-term liabilities (24 ) (28 ) |
Risk Management and Hedging A56
Risk Management and Hedging Activities (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Derivative [Line Items] | |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of the Company's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of June 30, 2017 Not designated as hedging contracts: Commodity assets (1) $ 22 $ 88 $ 5 $ 1 $ 116 Commodity liabilities (1) (4 ) (1 ) (55 ) (139 ) (199 ) Interest rate assets 12 — — — 12 Interest rate liabilities — — (4 ) (7 ) (11 ) Total 30 87 (54 ) (145 ) (82 ) Designated as hedging contracts: Commodity assets — — 2 6 8 Commodity liabilities — — (13 ) (16 ) (29 ) Interest rate assets — 6 — — 6 Interest rate liabilities — — (2 ) (1 ) (3 ) Total — 6 (13 ) (11 ) (18 ) Total derivatives 30 93 (67 ) (156 ) (100 ) Cash collateral receivable — — 20 64 84 Total derivatives - net basis $ 30 $ 93 $ (47 ) $ (92 ) $ (16 ) Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of December 31, 2016 Not designated as hedging contracts: Commodity assets (1) $ 42 $ 86 $ 5 $ 2 $ 135 Commodity liabilities (1) (10 ) — (46 ) (150 ) (206 ) Interest rate assets 15 — — — 15 Interest rate liabilities — — (4 ) (6 ) (10 ) Total 47 86 (45 ) (154 ) (66 ) Designated as hedging contracts: Commodity assets 1 — 2 3 6 Commodity liabilities — — (14 ) (8 ) (22 ) Interest rate assets — 8 — — 8 Interest rate liabilities — — (3 ) — (3 ) Total 1 8 (15 ) (5 ) (11 ) Total derivatives 48 94 (60 ) (159 ) (77 ) Cash collateral receivable — — 13 61 74 Total derivatives - net basis $ 48 $ 94 $ (47 ) $ (98 ) $ (3 ) (1) The Company's commodity derivatives not designated as hedging contracts are generally included in regulated rates, and as of June 30, 2017 and December 31, 2016 , a net regulatory asset of $162 million and $148 million , respectively, was recorded related to the net derivative liability of $83 million and $71 million , respectively. The difference between the net regulatory asset and the net derivative liability relates primarily to a power purchase agreement derivative at BHE Renewables. |
Schedule of Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Contracts | The following table reconciles the beginning and ending balances of the Company's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 180 $ 253 $ 148 $ 250 Changes in fair value recognized in net regulatory assets — (49 ) 33 (13 ) Net gains (losses) reclassified to operating revenue 1 (3 ) 14 (3 ) Net losses reclassified to cost of sales (19 ) (16 ) (33 ) (49 ) Ending balance $ 162 $ 185 $ 162 $ 185 |
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) | The following table reconciles the beginning and ending balances of the Company's accumulated other comprehensive (income) loss (pre-tax) and summarizes pre-tax gains and losses on commodity derivative contracts designated and qualifying as cash flow hedges recognized in OCI, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 23 $ 72 $ 16 $ 46 Changes in fair value recognized in OCI 7 (28 ) 23 20 Net losses reclassified to cost of sales (9 ) (18 ) (18 ) (40 ) Ending balance $ 21 $ 26 $ 21 $ 26 |
Schedule of Notional Amounts of Outstanding Derivative Positions | The following table summarizes the net notional amounts of outstanding derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of June 30, December 31, Measure 2017 2016 Electricity purchases Megawatt hours 11 5 Natural gas purchases Decatherms 279 271 Fuel purchases Gallons 5 11 Interest rate swaps US$ 694 714 Mortgage sale commitments, net US$ (348 ) (309 ) |
PacifiCorp [Member] | |
Derivative [Line Items] | |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of PacifiCorp's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of June 30, 2017 Not designated as hedging contracts (1) : Commodity assets $ 9 $ — $ 1 $ — $ 10 Commodity liabilities (3 ) — (22 ) (84 ) (109 ) Total 6 — (21 ) (84 ) (99 ) Total derivatives 6 — (21 ) (84 ) (99 ) Cash collateral receivable — — 15 58 73 Total derivatives - net basis $ 6 $ — $ (6 ) $ (26 ) $ (26 ) As of December 31, 2016 Not designated as hedging contracts (1) : Commodity assets $ 24 $ 2 $ 1 $ — $ 27 Commodity liabilities (6 ) — (14 ) (84 ) (104 ) Total 18 2 (13 ) (84 ) (77 ) Total derivatives 18 2 (13 ) (84 ) (77 ) Cash collateral receivable — — 10 59 69 Total derivatives - net basis $ 18 $ 2 $ (3 ) $ (25 ) $ (8 ) (1) PacifiCorp's commodity derivatives are generally included in rates and as of June 30, 2017 and December 31, 2016 , a regulatory asset of $95 million and $73 million , respectively, was recorded related to the net derivative liability of $99 million and $77 million , respectively. |
Schedule of Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Contracts | The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ 103 $ 144 $ 73 $ 133 Changes in fair value recognized in net regulatory assets 6 (45 ) 30 (19 ) Net gains reclassified to operating revenue 1 2 13 10 Net losses reclassified to energy costs (15 ) (12 ) (21 ) (35 ) Ending balance $ 95 $ 89 $ 95 $ 89 |
Schedule of Notional Amounts of Outstanding Derivative Positions | The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of June 30, December 31, Measure 2017 2016 Electricity sales Megawatt hours (1 ) (3 ) Natural gas purchases Decatherms 85 84 Fuel oil purchases Gallons 5 11 |
Nevada Power Company [Member] | |
Derivative [Line Items] | |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | The following table, which excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of Nevada Power's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Current Long-term Liabilities Liabilities Total As of June 30, 2017 Commodity liabilities (1) $ (3 ) $ (1 ) $ (4 ) As of December 31, 2016 Commodity liabilities (1) $ (7 ) $ (7 ) $ (14 ) (1) Nevada Power's commodity derivatives not designated as hedging contracts are included in regulated rates and as of June 30, 2017 and December 31, 2016 , a regulatory asset of $4 million and $14 million , respectively, was recorded related to the derivative liability of $4 million and $14 million , respectively. |
Schedule of Notional Amounts of Outstanding Derivative Positions | The following table summarizes the net notional amounts of outstanding derivative contracts with indexed and fixed price terms that comprise the mark-to-market values (in millions): As of Unit of June 30, December 31, Measure 2017 2016 Electricity sales Megawatt hours — (2 ) Natural gas purchases Decatherms 123 114 |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents the Company's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017 Assets: Commodity derivatives $ 2 $ 26 $ 96 $ (19 ) $ 105 Interest rate derivatives — 8 10 — 18 Mortgage loans held for sale — 408 — — 408 Money market mutual funds (2) 773 — — — 773 Debt securities: United States government obligations 161 — — — 161 International government obligations — 4 — — 4 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 270 — — — 270 International companies 1,388 — — — 1,388 Investment funds 175 — — — 175 $ 2,769 $ 485 $ 106 $ (19 ) $ 3,341 Liabilities: Commodity derivatives $ (2 ) $ (211 ) $ (15 ) $ 103 $ (125 ) Interest rate derivatives — (12 ) (2 ) — (14 ) $ (2 ) $ (223 ) $ (17 ) $ 103 $ (139 ) As of December 31, 2016 Assets: Commodity derivatives $ 5 $ 49 $ 87 $ (22 ) $ 119 Interest rate derivatives — 16 7 — 23 Mortgage loans held for sale — 359 — — 359 Money market mutual funds (2) 586 — — — 586 Debt securities: United States government obligations 161 — — — 161 International government obligations — 3 — — 3 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 2 — — 2 Equity securities: United States companies 250 — — — 250 International companies 1,190 — — — 1,190 Investment funds 147 — — — 147 $ 2,339 $ 467 $ 94 $ (22 ) $ 2,878 Liabilities: Commodity derivatives $ (2 ) $ (199 ) $ (27 ) $ 96 $ (132 ) Interest rate derivatives (1 ) (11 ) (1 ) — (13 ) $ (3 ) $ (210 ) $ (28 ) $ 96 $ (145 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $84 million and $74 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value Assets and Liabilities Net Measured On Recurring Basis Unobservable Input Reconciliation | The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Interest Auction Interest Auction Commodity Rate Rate Commodity Rate Rate Derivatives Derivatives Securities Derivatives Derivatives Securities 2017: Beginning balance $ 72 $ 9 $ — $ 60 $ 6 $ — Changes included in earnings — 39 — 12 66 — Changes in fair value recognized in OCI — — — (2 ) — — Changes in fair value recognized in net regulatory assets (3 ) — — (2 ) — — Purchases 1 — — 1 (2 ) — Settlements 11 (40 ) — 12 (62 ) — Ending balance $ 81 $ 8 $ — $ 81 $ 8 $ — Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Interest Auction Interest Auction Commodity Rate Rate Commodity Rate Rate Derivatives Derivatives Securities Derivatives Derivatives Securities 2016: Beginning balance $ 58 $ 11 $ 26 $ 47 $ 4 $ 44 Changes included in earnings (20 ) 29 — (1 ) 54 — Changes in fair value recognized in OCI 6 — 2 — — 6 Changes in fair value recognized in net regulatory assets (5 ) — — (11 ) — — Redemptions — — (10 ) — — (32 ) Settlements 5 (26 ) — 9 (44 ) — Ending balance $ 44 $ 14 $ 18 $ 44 $ 14 $ 18 |
Fair Value, by Balance Sheet Grouping | The following table presents the carrying value and estimated fair value of the Company's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 36,048 $ 41,340 $ 36,116 $ 40,718 |
PacifiCorp [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents PacifiCorp's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017 Assets: Commodity derivatives $ — $ 10 $ — $ (4 ) $ 6 Money market mutual funds (2) 167 — — — 167 Investment funds 19 — — — 19 $ 186 $ 10 $ — $ (4 ) $ 192 Liabilities - Commodity derivatives $ — $ (109 ) $ — $ 77 $ (32 ) As of December 31, 2016 Assets: Commodity derivatives $ — $ 27 $ — $ (7 ) $ 20 Money market mutual funds (2) 13 — — — 13 Investment funds 17 — — — 17 $ 30 $ 27 $ — $ (7 ) $ 50 Liabilities - Commodity derivatives $ — $ (104 ) $ — $ 76 $ (28 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $73 million and $69 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value, by Balance Sheet Grouping | PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 7,004 $ 8,260 $ 7,052 $ 8,204 |
MidAmerican Energy Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of June 30, 2017: Assets: Commodity derivatives $ — $ 2 $ 2 $ (2 ) $ 2 Money market mutual funds (2) 370 — — — 370 Debt securities: United States government obligations 161 — — — 161 International government obligations — 4 — — 4 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 270 — — — 270 International companies 7 — — — 7 Investment funds 14 — — — 14 $ 822 $ 45 $ 2 $ (2 ) $ 867 Liabilities - commodity derivatives $ — $ (6 ) $ (3 ) $ 3 $ (6 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2016: Assets: Commodity derivatives $ — $ 9 $ 1 $ (2 ) $ 8 Money market mutual funds (2) 1 — — — 1 Debt securities: United States government obligations 161 — — — 161 International government obligations — 3 — — 3 Corporate obligations — 36 — — 36 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 2 — — 2 Equity securities: United States companies 250 — — — 250 International companies 5 — — — 5 Investment funds 9 — — — 9 $ 426 $ 52 $ 1 $ (2 ) $ 477 Liabilities - commodity derivatives $ — $ (3 ) $ (3 ) $ 3 $ (3 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $1 million and $1 million as of June 30, 2017 and December 31, 2016 , respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted cash and investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value Assets and Liabilities Net Measured On Recurring Basis Unobservable Input Reconciliation | The following table reconciles the beginning and ending balances of MidAmerican Energy's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, Commodity Derivatives Auction Rate Securities Commodity Derivatives Auction Rate Securities 2017: Beginning balance $ 1 $ — $ (2 ) $ — Changes in fair value recognized in net regulatory assets (2 ) — — — Settlements — — 1 — Ending balance $ (1 ) $ — $ (1 ) $ — 2016: Beginning balance $ (4 ) $ 26 $ (6 ) $ 26 Transfer to affiliate — — (4 ) — Changes in fair value recognized in OCI — 2 — 3 Changes in fair value recognized in net regulatory assets (3 ) — (4 ) — Redemptions — (10 ) — (11 ) Settlements 5 — 12 — Ending balance $ (2 ) $ 18 $ (2 ) $ 18 |
Fair Value, by Balance Sheet Grouping | MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 4,893 $ 5,438 $ 4,301 $ 4,735 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Fair Value, by Balance Sheet Grouping | MidAmerican Funding's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 5,219 $ 5,867 $ 4,627 $ 5,164 |
Nevada Power Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents Nevada Power's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of June 30, 2017 Assets - investment funds $ 2 $ — $ — $ 2 Liabilities - commodity derivatives $ — $ — $ (4 ) $ (4 ) As of December 31, 2016 Assets: Money market mutual funds (1) $ 220 $ — $ — $ 220 Investment funds 6 — — 6 $ 226 $ — $ — $ 226 Liabilities - commodity derivatives $ — $ — $ (14 ) $ (14 ) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation | The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Beginning balance $ (14 ) $ (22 ) $ (14 ) $ (22 ) Changes in fair value recognized in regulatory assets (1 ) (2 ) (2 ) (5 ) Settlements 11 2 12 5 Ending balance $ (4 ) $ (22 ) $ (4 ) $ (22 ) |
Fair Value, by Balance Sheet Grouping | The following table presents the carrying value and estimated fair value of Nevada Power's long‑term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,598 $ 3,067 $ 2,581 $ 3,040 |
Sierra Pacific Power Company [Member] | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents Sierra Pacific's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of June 30, 2017 Assets - investment funds $ — $ — $ — $ — As of December 31, 2016 Assets: Money market mutual funds (1) $ 35 $ — $ — $ 35 Investment funds 1 — — 1 $ 36 $ — $ — $ 36 (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value, by Balance Sheet Grouping | The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt (in millions): As of June 30, 2017 As of December 31, 2016 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,121 $ 1,204 $ 1,119 $ 1,191 |
Components of Accumulated Oth58
Components of Accumulated Other Comprehensive Loss, Net (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Components of Accumulated Other Comprehensive Loss, Net | The following table shows the change in AOCI attributable to BHE shareholders by each component of OCI, net of applicable income taxes (in millions): Unrealized Unrecognized Foreign Gains on Unrealized AOCI Amounts on Currency Available- Gains (Losses) Attributable Retirement Translation For-Sale on Cash To BHE Benefits Adjustment Securities Flow Hedges Shareholders, Net Balance, December 31, 2015 $ (438 ) $ (1,092 ) $ 615 $ 7 $ (908 ) Other comprehensive income (loss) 62 (205 ) 71 1 (71 ) Balance, June 30, 2016 $ (376 ) $ (1,297 ) $ 686 $ 8 $ (979 ) Balance, December 31, 2016 $ (447 ) $ (1,675 ) $ 585 $ 26 $ (1,511 ) Other comprehensive income (loss) 1 308 119 (6 ) 422 Balance, June 30, 2017 $ (446 ) $ (1,367 ) $ 704 $ 20 $ (1,089 ) |
MidAmerican Energy Company [Member] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Components of Accumulated Other Comprehensive Loss, Net | The following table shows the change in accumulated other comprehensive income (loss), net ("AOCI") by each component of other comprehensive income, net of applicable income taxes (in millions): Unrealized Unrealized Accumulated Losses on Losses Other Available-For-Sale on Cash Flow Comprehensive Securities Hedges Loss, Net Balance, December 31, 2015 $ (3 ) $ (27 ) $ (30 ) Other comprehensive income 2 — 2 Dividend — 27 27 Balance at June 30, 2016 $ (1 ) $ — $ (1 ) |
Segment Information (Tables)
Segment Information (Tables) | 6 Months Ended |
Jun. 30, 2017 | |
Segment Reporting Information [Line Items] | |
Schedule of Segment Reporting Information, by Segment | The Company's reportable segments with foreign operations include Northern Powergrid , whose business is principally in the United Kingdom, BHE Transmission , whose business includes operations in Canada, and BHE Renewables , whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: PacifiCorp $ 1,245 $ 1,233 $ 2,526 $ 2,485 MidAmerican Funding 659 585 1,355 1,211 NV Energy 753 707 1,337 1,322 Northern Powergrid 219 249 464 528 BHE Pipeline Group 192 188 507 503 BHE Transmission 158 (18 ) 324 140 BHE Renewables 220 170 364 309 HomeServices 956 841 1,541 1,332 BHE and Other (1) 152 166 302 332 Total operating revenue $ 4,554 $ 4,121 $ 8,720 $ 8,162 Depreciation and amortization: PacifiCorp $ 202 $ 199 $ 398 $ 396 MidAmerican Funding 141 110 258 220 NV Energy 106 105 210 209 Northern Powergrid 52 50 101 100 BHE Pipeline Group 43 54 73 107 BHE Transmission 53 66 107 116 BHE Renewables 63 56 124 112 HomeServices 10 9 22 15 BHE and Other (1) — (1 ) (1 ) (1 ) Total depreciation and amortization $ 670 $ 648 $ 1,292 $ 1,274 Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating income: PacifiCorp $ 338 $ 339 $ 683 $ 663 MidAmerican Funding 136 140 243 240 NV Energy 191 173 289 262 Northern Powergrid 94 125 227 283 BHE Pipeline Group 55 60 263 252 BHE Transmission 73 (122 ) 150 (46 ) BHE Renewables 84 52 99 76 HomeServices 110 93 112 92 BHE and Other (1) (32 ) (6 ) (46 ) (15 ) Total operating income 1,049 854 2,020 1,807 Interest expense (457 ) (468 ) (915 ) (941 ) Capitalized interest 10 103 20 114 Allowance for equity funds 18 115 35 130 Interest and dividend income 27 27 53 54 Other, net (3 ) 1 22 11 Total income before income tax expense and equity income $ 644 $ 632 $ 1,235 $ 1,175 Interest expense: PacifiCorp $ 95 $ 96 $ 190 $ 191 MidAmerican Funding 59 55 118 109 NV Energy 58 63 116 130 Northern Powergrid 33 36 64 72 BHE Pipeline Group 10 13 22 26 BHE Transmission 39 38 80 74 BHE Renewables 52 48 102 97 HomeServices 1 — 2 1 BHE and Other (1) 110 119 221 241 Total interest expense $ 457 $ 468 $ 915 $ 941 Operating revenue by country: United States $ 4,177 $ 3,889 $ 7,924 $ 7,488 United Kingdom 219 249 464 528 Canada 158 (17 ) 324 143 Philippines and other — — 8 3 Total operating revenue by country $ 4,554 $ 4,121 $ 8,720 $ 8,162 Income before income tax expense and equity income by country: United States $ 529 $ 498 $ 952 $ 856 United Kingdom 62 91 164 210 Canada 38 28 80 71 Philippines and other 15 15 39 38 Total income before income tax expense and equity income by country $ 644 $ 632 $ 1,235 $ 1,175 As of June 30, December 31, 2017 2016 Total assets: PacifiCorp $ 23,626 $ 23,563 MidAmerican Funding 18,261 17,571 NV Energy 14,188 14,320 Northern Powergrid 6,940 6,433 BHE Pipeline Group 4,900 5,144 BHE Transmission 8,794 8,378 BHE Renewables 7,643 7,010 HomeServices 2,061 1,776 BHE and Other (1) 1,396 1,245 Total assets $ 87,809 $ 85,440 (1) The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other , relate principally to other entities, corporate functions and intersegment eliminations. T |
Schedule of Goodwill | e following table shows the change in the carrying amount of goodwill by reportable segment for the six-month period ended June 30, 2017 (in millions): BHE MidAmerican NV Northern Pipeline BHE BHE Home- PacifiCorp Funding Energy Powergrid Group Transmission Renewables Services Total December 31, 2016 $ 1,129 $ 2,102 $ 2,369 $ 930 $ 75 $ 1,470 $ 95 $ 840 $ 9,010 Acquisitions — — — — — — — 106 106 Foreign currency translation — — — 36 — 54 — — 90 Other — — — — (2 ) — — — (2 ) June 30, 2017 $ 1,129 $ 2,102 $ 2,369 $ 966 $ 73 $ 1,524 $ 95 $ 946 $ 9,204 |
MidAmerican Energy Company [Member] | |
Segment Reporting Information [Line Items] | |
Schedule of Segment Reporting Information, by Segment | The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 537 $ 481 $ 970 $ 880 Regulated gas 120 102 382 328 Other 1 1 1 1 Total operating revenue $ 658 $ 584 $ 1,353 $ 1,209 Depreciation and amortization: Regulated electric $ 130 $ 100 $ 237 $ 199 Regulated gas 11 10 21 21 Total depreciation and amortization $ 141 $ 110 $ 258 $ 220 Operating income: Regulated electric $ 128 $ 135 $ 195 $ 192 Regulated gas 7 4 47 47 Total operating income $ 135 $ 139 $ 242 $ 239 As of June 30, December 31, Total assets: Regulated electric $ 14,871 $ 14,113 Regulated gas 1,269 1,345 Other 1 1 Total assets $ 16,141 $ 15,459 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | |
Segment Reporting Information [Line Items] | |
Schedule of Segment Reporting Information, by Segment | The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 537 $ 481 $ 970 $ 880 Regulated gas 120 102 382 328 Other 2 2 3 3 Total operating revenue $ 659 $ 585 $ 1,355 $ 1,211 Depreciation and amortization: Regulated electric $ 130 $ 100 $ 237 $ 199 Regulated gas 11 10 21 21 Total depreciation and amortization $ 141 $ 110 $ 258 $ 220 Operating income: Regulated electric $ 128 $ 135 $ 195 $ 192 Regulated gas 7 4 47 47 Other 1 1 1 1 Total operating income $ 136 $ 140 $ 243 $ 240 As of June 30, December 31, Total assets (1) : Regulated electric $ 16,062 $ 15,304 Regulated gas 1,348 1,424 Other 23 19 Total assets $ 17,433 $ 16,747 (1) Total assets by reportable segment reflect the assignment of goodwill to applicable reporting units. |
Sierra Pacific Power Company [Member] | |
Segment Reporting Information [Line Items] | |
Schedule of Segment Reporting Information, by Segment | The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Six-Month Periods Ended June 30, Ended June 30, 2017 2016 2017 2016 Operating revenue: Regulated electric $ 160 $ 162 $ 319 $ 332 Regulated gas 17 19 51 66 Total operating revenue $ 177 $ 181 $ 370 $ 398 Cost of sales: Regulated electric $ 61 $ 65 $ 117 $ 135 Regulated gas 6 7 22 37 Total cost of sales $ 67 $ 72 $ 139 $ 172 Gross margin: Regulated electric $ 99 $ 97 $ 202 $ 197 Regulated gas 11 12 29 29 Total gross margin $ 110 $ 109 $ 231 $ 226 Operating and maintenance: Regulated electric $ 36 $ 40 $ 72 $ 76 Regulated gas 4 5 9 10 Total operating and maintenance $ 40 $ 45 $ 81 $ 86 Depreciation and amortization: Regulated electric $ 24 $ 25 $ 49 $ 50 Regulated gas 4 4 7 8 Total depreciation and amortization $ 28 $ 29 $ 56 $ 58 Operating income: Regulated electric $ 34 $ 26 $ 70 $ 59 Regulated gas 2 2 12 10 Total operating income $ 36 $ 28 $ 82 $ 69 Interest expense: Regulated electric $ 10 $ 13 $ 20 $ 27 Regulated gas 1 1 2 3 Total interest expense $ 11 $ 14 $ 22 $ 30 As of June 30, December 31, 2017 2016 Total assets: Regulated electric $ 3,117 $ 3,119 Regulated gas 306 314 Regulated common assets (1) 11 60 Total assets $ 3,434 $ 3,493 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments. |
General (Details)
General (Details) | 6 Months Ended |
Jun. 30, 2017OperatingSegmentsOwnedAndOperatedCompanies | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Number of reportable segments | OperatingSegments | 8 |
Number of owned and operated utility companies in the United States | 4 |
Number of states owned and operated utility companies serve customers | 11 |
Number of owned and operated interstate natural gas pipeline companies in the United States | 2 |
Number of owned and operated electricity distribution companies in Great Britain | 2 |
Number of owned and operated electricity transmission companies in Canada | 1 |
Number of owned and operated renewable energy businesses | 1 |
Number of owned and operated residential real estate brokerage firms in the United States | 1 |
Number of owned and operated residential real estate brokerage franchise networks in the United States | 1 |
New Accounting Pronouncements N
New Accounting Pronouncements New Accounting Pronouncements (Details) - BHE (Details) - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 119 | $ 71 |
Business Acquisitions (Details)
Business Acquisitions (Details) Customers in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | |||
Dec. 31, 2017USD ($) | Dec. 31, 2017USD ($) | Jun. 30, 2017USD ($) | Jun. 30, 2016USD ($) | Jul. 07, 2017Customersmi | |
Business Acquisition [Line Items] | |||||
Payments to Acquire Businesses, Net of Cash Acquired | $ 588 | $ 66 | |||
Other acquisitions [Member] | |||||
Business Acquisition [Line Items] | |||||
Payments to Acquire Businesses, Net of Cash Acquired | $ 588 | ||||
Subsequent Event [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Number of transmission and distribution customers | Customers | 3 | ||||
Miles of transmission and distribution lines | mi | 122,000 | ||||
Texas Transmission Investment LLC [Member] | Subsequent Event [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 19.75% | ||||
Oncor directors, employees and retirees [Member] | Subsequent Event [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 0.22% | ||||
Scenario, Forecast [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest | $ 9,000 | $ 9,000 | |||
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net | $ 11,250 | $ 11,250 | |||
Ownership Interest | 100.00% | 100.00% | |||
Merger Agreement, Termination Fees | $ 270 | ||||
Payments to Acquire Businesses, Gross | $ 9,000 | ||||
Scenario, Forecast [Member] | Energy Future Holdings Corp [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Business Acquisition, Percentage of Voting Interests Acquired | 80.03% | 80.03% | |||
Scenario, Forecast [Member] | Texas Transmission Investment LLC [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Business Acquisition, Percentage of Voting Interests Acquired | 19.75% | 19.75% | |||
Scenario, Forecast [Member] | Oncor directors, employees and retirees [Member] | Oncor Electric Delivery Company, LLC [Member] | |||||
Business Acquisition [Line Items] | |||||
Business Acquisition, Percentage of Voting Interests Acquired | 0.22% | 0.22% |
Property, Plant and Equipment63
Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | |
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment in service, net | $ 61,079 | $ 61,079 | $ 60,411 |
Construction in Progress, Gross | 2,607 | 2,607 | 2,098 |
Property, plant and equipment, net | 63,686 | 63,686 | 62,509 |
Regulated assets [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 79,286 | 79,286 | 78,478 |
Accumulated depreciation and amortization | (24,029) | (24,029) | (23,603) |
Property, plant and equipment in service, net | 55,257 | 55,257 | 54,875 |
Construction in Progress, Gross | 2,300 | 2,300 | 1,800 |
Regulated assets [Member] | Utility generation, transmission and distribution systems | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 72,317 | $ 72,317 | 71,536 |
Regulated assets [Member] | Utility generation, transmission and distribution systems | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 5 years | ||
Regulated assets [Member] | Utility generation, transmission and distribution systems | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 80 years | ||
Regulated assets [Member] | Interstate natural gas pipeline assets | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 6,969 | $ 6,969 | 6,942 |
Regulated assets [Member] | Interstate natural gas pipeline assets | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 3 years | ||
Regulated assets [Member] | Interstate natural gas pipeline assets | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 80 years | ||
Unregulated operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 7,044 | $ 7,044 | 6,596 |
Accumulated depreciation and amortization | (1,222) | (1,222) | (1,060) |
Property, plant and equipment in service, net | 5,822 | 5,822 | 5,536 |
Unregulated operation [Member] | Independent power plants | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 5,880 | $ 5,880 | 5,594 |
Unregulated operation [Member] | Independent power plants | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 5 years | ||
Unregulated operation [Member] | Independent power plants | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 30 years | ||
Unregulated operation [Member] | Other assets | |||
Property, Plant and Equipment [Line Items] | |||
Property, plant and equipment | 1,164 | $ 1,164 | $ 1,002 |
Unregulated operation [Member] | Other assets | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 3 years | ||
Unregulated operation [Member] | Other assets | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Depreciable Life | 30 years | ||
Electricity Generation Plant, Non-Nuclear [Member] | MidAmerican Energy Company and Subsidiaries [Member] | Regulated assets [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Change in Accounting Estimates, Impact on Future Periods | $ 34 | ||
Change in Accounting Estimates, Impact on Current Period From Prior Year Change | $ 8 | $ 17 |
Property, Plant and Equipment64
Property, Plant and Equipment, Net - PacifiCorp (Details) - PacifiCorp [Member] - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Dec. 31, 2016 | |
Property, Plant and Equipment [Line Items] | ||
Electric Property Plant And Equipment In Service Gross | $ 27,505 | $ 27,298 |
Public utility accumulated depreciation and amortization | (9,074) | (8,793) |
Public Utilities Property, Plant And Equipment In Service, Net | 18,431 | 18,505 |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 710 | 657 |
Public Utilities, Property, Plant and Equipment, Net | $ 19,141 | $ 19,162 |
Minimum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Depreciable Life | 5 years | |
Maximum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Depreciable Life | 75 years |
Property, Plant and Equipment65
Property, Plant and Equipment, Net Property, Plant and Equipment, Net - MEC (Details) - MidAmerican Energy Company [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | |
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 12,296 | $ 12,296 | $ 12,328 |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 746 | 746 | 493 |
Public Utilities, Property, Plant and Equipment, Net | 13,042 | 13,042 | 12,821 |
Regulated Operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress | 17,950 | 17,950 | 17,770 |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (5,660) | (5,660) | (5,448) |
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | 12,290 | 12,290 | 12,322 |
Unregulated operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (1) | (1) | (1) |
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | 6 | 6 | 6 |
Gross public utility property, plant and equipment in service | 7 | 7 | 7 |
Electric Operations [Member] | Regulated Operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Generation or Processing | 11,308 | 11,308 | 11,282 |
Public Utilities, Property, Plant and Equipment, Transmission | 1,794 | 1,794 | 1,726 |
Public Utilities, Property, Plant and Equipment, Distribution | 3,260 | 3,260 | 3,197 |
Natural Gas Processing Plant [Member] | Regulated Operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Distribution | 1,588 | 1,588 | $ 1,565 |
Electricity Generation Plant, Non-Nuclear [Member] | Regulated Operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Change in Accounting Estimates, Impact on Future Periods | 34 | ||
Change in Accounting Estimates, Impact on Current Period From Prior Year Change | $ 8 | $ 17 |
Property, Plant and Equipment66
Property, Plant and Equipment, Net Property, Plant and Equipment, Net - MidAmerican Funding (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Property, Plant and Equipment [Line Items] | ||
Construction in Progress, Gross | $ 2,607 | $ 2,098 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||
Property, Plant and Equipment [Line Items] | ||
Property, Plant and Equipment, Gross | 21 | 22 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | (9) | |
Construction in Progress, Gross | $ 2 | $ 1 |
Property, Plant and Equipment67
Property, Plant and Equipment, Net Property, Plant and Equipment, Net - NPC(Details) - Nevada Power Company [Member] - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended | |
Jun. 30, 2017 | Dec. 31, 2016 | Apr. 30, 2017 | |
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 6,865 | $ 6,883 | |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 60 | 114 | |
Public Utilities, Property, Plant and Equipment, Net | 6,925 | 6,997 | |
130 Megawatts of Natural Gas Energy [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Ownership Percentage Acquired | 25.00% | ||
Business Acquisition, Transaction Costs | $ 77 | ||
Regulated assets [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Generation or Processing | 3,741 | 4,271 | |
Public Utilities, Property, Plant and Equipment, Distribution | 3,279 | 3,231 | |
Public Utilities, Property, Plant and Equipment, Transmission | 1,861 | 1,846 | |
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment | 773 | 738 | |
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress | 9,654 | 10,086 | |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 2,791 | 3,205 | |
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 6,863 | $ 6,881 | |
Regulated assets [Member] | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Generation, Useful Life | 30 years | 30 years | |
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 20 years | 20 years | |
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life | 45 years | 45 years | |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 5 years | 5 years | |
Regulated assets [Member] | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Generation, Useful Life | 55 years | 55 years | |
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 65 years | 65 years | |
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life | 65 years | 65 years | |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 65 years | 65 years | |
Unregulated operation [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 2 | $ 2 | |
Unregulated operation [Member] | Minimum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 45 years | 45 years | |
Unregulated operation [Member] | Maximum [Member] | |||
Property, Plant and Equipment [Line Items] | |||
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 45 years | 45 years |
Property, Plant and Equipment68
Property, Plant and Equipment, Net Property, Plant and Equipment, Net - SPPC (Details) - Sierra Pacific Power Company [Member] - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended |
Jun. 30, 2017 | Dec. 31, 2016 | |
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 2,734 | $ 2,715 |
Public Utilities, Property, Plant and Equipment, Net | 2,841 | 2,822 |
Common Facilities [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 107 | 107 |
Public Utilities, Property, Plant and Equipment, Net | 2,841 | 2,822 |
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Generation or Processing | 1,140 | 1,137 |
Public Utilities, Property, Plant and Equipment, Distribution | 1,436 | 1,417 |
Public Utilities, Property, Plant and Equipment, Transmission | 774 | 771 |
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment | $ 176 | $ 164 |
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member] | Minimum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Generation, Useful Life | 25 years | 25 years |
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 20 years | 20 years |
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life | 50 years | 50 years |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 5 years | 5 years |
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member] | Maximum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Generation, Useful Life | 60 years | 60 years |
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 100 years | 100 years |
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life | 100 years | 100 years |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 70 years | 70 years |
Regulated Operation [Member] | Natural Gas Processing Plant [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Distribution | $ 385 | $ 381 |
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment | $ 14 | $ 15 |
Regulated Operation [Member] | Natural Gas Processing Plant [Member] | Minimum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 35 years | 35 years |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 5 years | 5 years |
Regulated Operation [Member] | Natural Gas Processing Plant [Member] | Maximum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life | 70 years | 70 years |
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 70 years | 70 years |
Regulated Operation [Member] | Common Facilities [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Common | $ 283 | $ 267 |
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress | 4,208 | 4,152 |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | 1,479 | 1,442 |
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 2,729 | $ 2,710 |
Regulated Operation [Member] | Common Facilities [Member] | Minimum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Common, Useful Life | 5 years | 5 years |
Regulated Operation [Member] | Common Facilities [Member] | Maximum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Common, Useful Life | 70 years | 70 years |
Unregulated operation [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress | $ 5 | $ 5 |
Unregulated operation [Member] | Minimum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 70 years | 70 years |
Unregulated operation [Member] | Maximum [Member] | ||
Property, Plant and Equipment [Line Items] | ||
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life | 70 years | 70 years |
Regulatory Matters Regulatory M
Regulatory Matters Regulatory Matters - NPC (Details) $ in Millions | 1 Months Ended | ||||
May 31, 2017USD ($) | Mar. 31, 2017MW | Sep. 30, 2016USD ($) | Jun. 30, 2017USD ($) | Dec. 31, 2016USD ($) | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Regulatory assets | $ 4,474 | $ 4,307 | |||
Nevada Power Company [Member] | |||||
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Regulatory assets | 1,133 | $ 1,000 | |||
Nevada Power Company [Member] | 257 Megawatts of Coal Energy [Member] | |||||
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Coal-Fired Power Plant Capacity | MW | 257 | ||||
Regulatory assets | $ 151 | ||||
Nevada Power Company [Member] | Public Utilities Commission, Nevada [Member] | MGM Resorts International [Member] | |||||
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Total impact fee | $ 82 | ||||
Impact Fee Credit | $ 16 | ||||
Nevada Power Company [Member] | Public Utilities Commission, Nevada [Member] | Wynn Las Vegas, LLC [Member] | |||||
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Total impact fee | $ 15 | ||||
Nevada Power Company [Member] | Public Utilities Commission, Nevada [Member] | Switch, Ltd. [Member] | |||||
Schedule Of Regulatory Assets and Liabilities [Line Items] | |||||
Total impact fee | $ 27 |
Regulatory Matters Regulatory70
Regulatory Matters Regulatory Matters - SPPC (Details) - Sierra Pacific Power Company [Member] - General Rate Case [Member] - Public Utilities Commission, Nevada [Member] | 12 Months Ended |
Dec. 31, 2016USD ($)MW | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 0 |
Net Metering Capacity | MW | 6 |
Electric Distribution [Member] | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |
Public Utilities, Approved Rate Increase (Decrease), Amount | $ 3,000,000 |
Gas Distribution [Member] | |
Schedule Of Regulatory Assets and Liabilities [Line Items] | |
Public Utilities, Approved Rate Increase (Decrease), Amount | $ 2,000,000 |
Investments and Restricted Ca71
Investments and Restricted Cash and Investments (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Investments [Abstract] | ||
Investments | $ 1,936 | $ 1,694 |
Equity Method Investments [Abstract] | ||
Equity method investments | 1,798 | 1,720 |
Restricted Cash and Investments [Abstract] | ||
Restricted cash and investments | 723 | 742 |
Investments, including equity method investments and restricted cash and investments | 4,457 | 4,156 |
Investments, including equity method investments and restricted cash and investments, current | 196 | 211 |
Investments, including equity method investments and restricted cash and investments, noncurrent | 4,261 | 3,945 |
Quad Cities Station nuclear decommissioning trust funds [Member] | ||
Restricted Cash and Investments [Abstract] | ||
Decommissioning fund investments, fair value | 485 | 460 |
Other restricted cash and investments [Member] | ||
Restricted Cash and Investments [Abstract] | ||
Restricted cash and investments | 238 | 282 |
Equity Method Investments, tax equity investments [Member] | ||
Equity Method Investments [Abstract] | ||
Equity method investments | 811 | 741 |
ETT [Member] | ||
Equity Method Investments [Abstract] | ||
Equity method investments | 694 | 672 |
Bridger Coal Company [Member] | ||
Equity Method Investments [Abstract] | ||
Equity method investments | 150 | 165 |
Other equity method investments [Member] | ||
Equity Method Investments [Abstract] | ||
Equity method investments | 143 | 142 |
BYD Company Limited common stock [Member] | ||
Investments [Abstract] | ||
Available-for-sale securities, equity securities | 1,381 | 1,185 |
Available-for-sale securities, gross unrealized gain (loss) | 1,149 | 953 |
Rabbi trusts [Member] | ||
Investments [Abstract] | ||
Rabbi trusts, amount | 427 | 403 |
Other investments [Member] | ||
Investments [Abstract] | ||
Other investments | $ 128 | $ 106 |
Recent Financing Transactions R
Recent Financing Transactions Recent Financing Transactions - Long-Term Debt (Details) £ in Millions, $ in Millions | 1 Months Ended | 6 Months Ended | |||||
Jul. 31, 2017GBP (£) | Jun. 30, 2017USD ($)shares | Jul. 31, 2017USD ($) | Jul. 31, 2017GBP (£) | May 31, 2017USD ($) | Apr. 01, 2017USD ($) | Feb. 28, 2017USD ($) | |
BHE [Member] | BHE Junior Subordinated Debentures, due 2044 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Repurchased Face Amount | $ 550 | ||||||
BHE [Member] | BHE Junior Subordinated Debentures, due June 2057 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 100 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 10.00% | ||||||
Conversion of Stock, Shares Converted | shares | 181,819 | ||||||
Alamo 6, LLC [Member] | Alamo 6, LLC Senior Secured Notes, 4.17%, due March 2018 through March 2042 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 232 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 4.17% | ||||||
MidAmerican Energy Company and Subsidiaries [Member] | MEC First Mortgage Bonds, 3.10%, Due May 2027 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 375 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 3.10% | ||||||
MidAmerican Energy Company and Subsidiaries [Member] | MEC First Mortgage Bonds, 3.95%, Due 2047 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 475 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 3.95% | ||||||
MidAmerican Energy Company and Subsidiaries [Member] | MEC Notes, 5.95% Series, due 2017 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 5.95% | ||||||
Debt Instrument, Repurchased Face Amount | $ 250 | ||||||
Subsequent Event [Member] | Northern Powergrid Holdings [Member] | Secured amortizing corporate facility, due June 2026 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | £ | £ 200 | ||||||
Proceeds from Issuance of Debt | £ | £ 120 | ||||||
Percent of interest rate swaps that fix the underlying interest rate on outstanding debt | 85.00% | 85.00% | |||||
Subsidiary Debt [Member] | Kern River [Member] | Kern River Senior Notes, 4.893%, Due 2018 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 4.893% | ||||||
Debt Instrument, Repurchased Face Amount | $ 175 | ||||||
Subsidiary Debt [Member] | Subsequent Event [Member] | Cordova Funding Corporation [Member] | Cordova Funding Corporation Bonds, 8.48% to 9.07%, due 2019 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Repurchased Face Amount | $ 89 | ||||||
Subsidiary Debt [Member] | Subsequent Event [Member] | CE Generation, LLC [Member] | CE Generation Bonds 7.416% due 2018 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 7.416% | 7.416% | |||||
Debt Instrument, Repurchased Face Amount | $ 51 | ||||||
Subsidiary Debt [Member] | Subsequent Event [Member] | Salton Sea Funding Corporation [Member] | Salton Sea Funding Corporation Bonds 7.475% due 2018 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 7.475% | 7.475% | |||||
Debt Instrument, Repurchased Face Amount | $ 20 | ||||||
Subsidiary Debt [Member] | Subsequent Event [Member] | Minimum [Member] | Cordova Funding Corporation [Member] | Cordova Funding Corporation Bonds, 8.48% to 9.07%, due 2019 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 8.48% | 8.48% | |||||
Subsidiary Debt [Member] | Subsequent Event [Member] | Maximum [Member] | Cordova Funding Corporation [Member] | Cordova Funding Corporation Bonds, 8.48% to 9.07%, due 2019 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 9.07% | 9.07% | |||||
Subsidiary Debt [Member] | MidAmerican Funding [Member] | MidAmerican Energy Company [Member] | MEC First Mortgage Bonds, 3.10%, Due May 2027 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 375 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 3.10% | ||||||
Subsidiary Debt [Member] | MidAmerican Funding [Member] | MidAmerican Energy Company [Member] | MEC First Mortgage Bonds, 3.95%, Due 2047 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt instrument, face amount | $ 475 | ||||||
Debt Instrument, Interest Rate, Stated Percentage | 3.95% | ||||||
Subsidiary Debt [Member] | MidAmerican Funding [Member] | MidAmerican Energy Company [Member] | MEC Notes, 5.95% Series, due 2017 [Member] | |||||||
Debt Instrument [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage | 5.95% |
Recent Financing Transactions73
Recent Financing Transactions Recent Financings Transactions - Credit Facilities (Details) - Line of Credit [Member] $ in Millions | Jun. 30, 2017USD ($) | May 31, 2017USD ($) |
Sierra Pacific Power Company [Member] | Secured credit facility, $250 million, expiring June 2020 [Domain] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 250 | |
MidAmerican Energy Company [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 | |
MidAmerican Energy Company [Member] | Unsecured credit facility, $600 million, expiring March 2018 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of credit facility, borrowing capacity replaced | $ 600 | |
Line of Credit Facility, Maximum Borrowing Capacity | 600 | |
MidAmerican Energy Company [Member] | Unsecured credit facility, $900 million, expiring March 2020 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | 900 | |
BHE [Member] | Unsecured credit facility, $2 billion, expiring June 2020 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of credit facility, borrowing capacity replaced | $ 2,000 | |
BHE [Member] | Unsecured credit facility, $1 billion, expiring May 2018 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 1,000 | |
PacifiCorp [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 | |
PacifiCorp [Member] | Unsecured credit facility, $600 million, expiring March 2018 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of credit facility, borrowing capacity replaced | $ 600 | |
Line of Credit Facility, Maximum Borrowing Capacity | 600 | |
PacifiCorp [Member] | Unsecured credit facility, $600 million, expiring June 2020 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | 600 | |
PacifiCorp [Member] | Unsecured credit facility, $400 million, expiring June 2020 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | 400 | |
Nevada Power Company [Member] | Secured credit facility, $400 million, expiring June 2020 [Member] | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 400 | |
Maximum [Member] | Sierra Pacific Power Company [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 | |
Maximum [Member] | MidAmerican Energy Company [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 | |
Maximum [Member] | BHE [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.70 | |
Maximum [Member] | PacifiCorp [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 | |
Maximum [Member] | Nevada Power Company [Member] | ||
Line of Credit Facility [Line Items] | ||
Debt to capitalization ratio | 0.65 |
Recent Financing Transactions74
Recent Financing Transactions Recent Financing Transactions - MEC (Details) - MidAmerican Energy Company [Member] $ in Millions | Feb. 28, 2017USD ($) |
MEC First Mortgage Bonds, 3.10%, Due May 2027 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument, face amount | $ 375 |
Debt Instrument, Interest Rate, Stated Percentage | 3.10% |
MEC First Mortgage Bonds, 3.95%, Due 2047 [Member] | |
Debt Instrument [Line Items] | |
Debt instrument, face amount | $ 475 |
Debt Instrument, Interest Rate, Stated Percentage | 3.95% |
MEC Notes, 5.95% Series, due 2017 [Member] | |
Debt Instrument [Line Items] | |
Debt Instrument, Interest Rate, Stated Percentage | 5.95% |
Debt Instrument, Repurchased Face Amount | $ 250 |
Recent Financing Transactions75
Recent Financing Transactions Recent Financing Transactions - NPC (Details) - Nevada Power Company [Member] - USD ($) $ in Millions | May 31, 2017 | Jan. 31, 2017 |
Pollution Control Revenue Bonds, Variable-Rate, Series 2006 due 2036 [Member] | ||
Debt Instrument [Line Items] | ||
Debt Instrument, Repurchase Amount | $ 38 | |
Pollution Control Revenue Bonds, Variable-Rate, Series 2006A due 2032 [Member] | ||
Debt Instrument [Line Items] | ||
Debt Instrument, Repurchase Amount | $ 38 | |
NVE Holdings [Member] | Pollution Control Revenue Bonds, Variable-Rate, Series 2006 due 2036 [Member] | ||
Debt Instrument [Line Items] | ||
Debt Instrument, Repurchase Amount | $ 39.5 | |
NVE Holdings [Member] | Pollution Control Revenue Bonds, Variable-Rate, Series 2006A due 2032 [Member] | ||
Debt Instrument [Line Items] | ||
Debt Instrument, Repurchase Amount | 40 | |
NVE Holdings [Member] | Pollution Control Refunding Revenue Bonds, 1.60%, Series 2017, Due 2036 [Member] | ||
Debt Instrument [Line Items] | ||
Debt instrument, face amount | $ 40 | |
Debt Instrument, Interest Rate, Stated Percentage | 1.60% | |
NVE Holdings [Member] | NPC Pollution Control Refunding Revenue Bonds, 1.80%, Series 2017A, due 2032 [Member] | ||
Debt Instrument [Line Items] | ||
Debt instrument, face amount | $ 40 | |
Debt Instrument, Interest Rate, Stated Percentage | 1.80% | |
NVE Holdings [Member] | NPC Pollution Control Refunding Revenue Bonds, 1.60%, Series 2017B, due 2039 [Member] | ||
Debt Instrument [Line Items] | ||
Debt instrument, face amount | $ 13 | |
Debt Instrument, Interest Rate, Stated Percentage | 1.60% | |
NVE Holdings [Member] | NPC General and Refunding Mortgage Notes, Series AA, No. AA-1 [Member] | ||
Debt Instrument [Line Items] | ||
Debt instrument, face amount | $ 40 | |
NVE Holdings [Member] | NPC General and Refunding Mortgage Notes, Series AA, No. AA-2 [Member] | ||
Debt Instrument [Line Items] | ||
Debt instrument, face amount | 53 | |
NVE Holdings [Member] | Pollution Control Revenue Bonds, Variable-Rate, Series 2006B due 2036 [Member] | ||
Debt Instrument [Line Items] | ||
Debt Instrument, Repurchase Amount | $ 13 |
Recent Financing Transactions76
Recent Financing Transactions Recent Financing Transactions - SPPC (Details) $ in Millions | Jun. 30, 2017USD ($) |
Secured credit facility, $250 million, expiring June 2020 [Domain] | Line of Credit [Member] | Sierra Pacific Power Company [Member] | |
Debt Instrument [Line Items] | |
Line of Credit Facility, Maximum Borrowing Capacity | $ 250 |
Income Taxes (Details)
Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | ||||
Federal statutory income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
Income tax credits | (19.00%) | (12.00%) | (17.00%) | (13.00%) |
State income tax, net of federal income tax benefit | 1.00% | 1.00% | (2.00%) | (1.00%) |
Income tax effect of foreign income | (5.00%) | (6.00%) | (5.00%) | (5.00%) |
Equity income | 1.00% | 2.00% | 1.00% | 2.00% |
Other, net | (0.00%) | (1.00%) | (1.00%) | (1.00%) |
Effective income tax rate | 13.00% | 19.00% | 11.00% | 17.00% |
Production Tax Credit Carryforwards [Abstract] | ||||
Years eligible for federal renewable energy production tax credit | 10 years | |||
Related Party Tax Expense [Abstract] | ||||
Related party transaction, cash paid for income taxes, net | $ 24 | |||
Related party transaction, cash received for income taxes, net | $ 658 |
Income Taxes - MEC (Details)
Income Taxes - MEC (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | ||||
Federal statutory income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
Income tax credits | (19.00%) | (12.00%) | (17.00%) | (13.00%) |
State income tax, net of federal income tax benefit | 1.00% | 1.00% | (2.00%) | (1.00%) |
Other, net | (0.00%) | (1.00%) | (1.00%) | (1.00%) |
Effective income tax rate | 13.00% | 19.00% | 11.00% | 17.00% |
Production Tax Credit Carryforwards [Abstract] | ||||
Years eligible for federal renewable energy production tax credit | 10 years | |||
Related Party Income Tax Receivable (Payable) [Abstract] | ||||
Related party transaction, cash received for income taxes, net | $ 658 | |||
MidAmerican Energy Company [Member] | ||||
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | ||||
Federal statutory income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
Income tax credits | (67.00%) | (60.00%) | (73.00%) | (59.00%) |
State income tax, net of federal income tax benefit | (4.00%) | (5.00%) | (2.00%) | (1.00%) |
Effects of ratemaking | (5.00%) | (2.00%) | (7.00%) | (6.00%) |
Effective income tax rate | (41.00%) | (32.00%) | (47.00%) | (31.00%) |
Production Tax Credit Carryforwards [Abstract] | ||||
Years eligible for federal renewable energy production tax credit | 10 years | |||
MidAmerican Energy Company [Member] | Berkshire Hathaway Energy [Member] | ||||
Related Party Income Tax Receivable (Payable) [Abstract] | ||||
Related party transaction, cash received for income taxes, net | $ 7 | $ 308 |
Income Taxes - MidAmerican Fund
Income Taxes - MidAmerican Funding (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | ||||
Federal statutory income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
Income tax credits | (19.00%) | (12.00%) | (17.00%) | (13.00%) |
State income tax, net of federal income tax benefit | 1.00% | 1.00% | (2.00%) | (1.00%) |
Other, net | (0.00%) | (1.00%) | (1.00%) | (1.00%) |
Effective income tax rate | 13.00% | 19.00% | 11.00% | 17.00% |
Production Tax Credit Carryforwards [Abstract] | ||||
Years eligible for federal renewable energy production tax credit | 10 years | |||
Related Party Income Tax Receivable (Payable) [Abstract] | ||||
Related party transaction, cash received for income taxes, net | $ 658 | |||
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||||
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | ||||
Federal statutory income tax rate | 35.00% | 35.00% | 35.00% | 35.00% |
Income tax credits | (71.00%) | (63.00%) | (78.00%) | (63.00%) |
State income tax, net of federal income tax benefit | (5.00%) | (5.00%) | (2.00%) | (2.00%) |
Effects of ratemaking | (5.00%) | (2.00%) | (8.00%) | (6.00%) |
Other, net | (0.00%) | (0.00%) | 1.00% | |
Effective income tax rate | (46.00%) | (35.00%) | (53.00%) | (35.00%) |
Production Tax Credit Carryforwards [Abstract] | ||||
Years eligible for federal renewable energy production tax credit | 10 years | |||
MidAmerican Funding, LLC and Subsidiaries [Domain] | Berkshire Hathaway Energy [Member] | ||||
Related Party Income Tax Receivable (Payable) [Abstract] | ||||
Related party transaction, cash received for income taxes, net | $ 8 | $ 313 |
Employee Benefit Plans (Details
Employee Benefit Plans (Details) £ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | |||
Jun. 30, 2017USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2017USD ($) | Jun. 30, 2017GBP (£) | Jun. 30, 2016USD ($) | |
Domestic Pension Plans [Member] | |||||
Defined Benefit Plan Disclosure [Line Items] | |||||
Employer contributions | $ 7 | ||||
Service cost | $ 6 | $ 7 | 12 | $ 15 | |
Interest cost | 29 | 32 | 58 | 63 | |
Expected return on plan assets | (40) | (41) | (80) | (81) | |
Net amortization | 8 | 13 | 15 | 24 | |
Net periodic benefit cost | 3 | 11 | 5 | 21 | |
Domestic Other Postretirement Plans [Member] | |||||
Defined Benefit Plan Disclosure [Line Items] | |||||
Employer contributions | 4 | ||||
Service cost | 2 | 2 | 4 | 5 | |
Interest cost | 8 | 8 | 14 | 16 | |
Expected return on plan assets | (11) | (10) | (21) | (21) | |
Net amortization | (4) | (4) | (7) | (7) | |
Net periodic benefit cost | (5) | (4) | (10) | (7) | |
UK Pension Plan [Member] | |||||
Defined Benefit Plan Disclosure [Line Items] | |||||
Employer contributions | 25 | £ 20 | |||
Service cost | 7 | 6 | 13 | 11 | |
Interest cost | 15 | 19 | 29 | 38 | |
Expected return on plan assets | (25) | (29) | (49) | (58) | |
Net amortization | 16 | 11 | 33 | 23 | |
Net periodic benefit cost | $ 13 | $ 7 | $ 26 | $ 14 |
Employee Benefit Plans - Employ
Employee Benefit Plans - Employer Contributions (Details) - 6 months ended Jun. 30, 2017 £ in Millions, $ in Millions | USD ($) | GBP (£) |
Domestic Pension Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Defined benefit plan, expected contributions in current fiscal year | $ 15 | |
Employer contributions | 7 | |
Domestic Other Postretirement Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Defined benefit plan, expected contributions in current fiscal year | 5 | |
Employer contributions | 4 | |
UK Pension Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Defined benefit plan, expected contributions in current fiscal year | £ | £ 39 | |
Employer contributions | $ 25 | £ 20 |
Employee Benefit Plans Employee
Employee Benefit Plans Employee Benefit Plans - PacifiCorp (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Domestic Pension Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | $ 6 | $ 7 | $ 12 | $ 15 |
Interest cost | 29 | 32 | 58 | 63 |
Expected return on plan assets | (40) | (41) | (80) | (81) |
Net amortization | 8 | 13 | 15 | 24 |
Net periodic benefit cost | 3 | 11 | 5 | 21 |
Domestic Other Postretirement Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 2 | 2 | 4 | 5 |
Interest cost | 8 | 8 | 14 | 16 |
Expected return on plan assets | (11) | (10) | (21) | (21) |
Net amortization | (4) | (4) | (7) | (7) |
Net periodic benefit cost | (5) | (4) | (10) | (7) |
PacifiCorp [Member] | Domestic Pension Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 0 | 1 | 0 | 2 |
Interest cost | 13 | 13 | 25 | 27 |
Expected return on plan assets | (18) | (19) | (36) | (38) |
Net amortization | 3 | 9 | 7 | 17 |
Net periodic benefit cost | (2) | 4 | (4) | 8 |
PacifiCorp [Member] | Domestic Other Postretirement Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 0 | 0 | 1 | 1 |
Interest cost | 4 | 4 | 7 | 8 |
Expected return on plan assets | (5) | (5) | (11) | (11) |
Net amortization | (2) | (2) | (3) | (3) |
Net periodic benefit cost | $ (3) | $ (3) | $ (6) | $ (5) |
Employee Benefit Plans Employ83
Employee Benefit Plans Employee Benefit Plans - PacifiCorp - Employer Contributions (Details) $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
Domestic Pension Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | $ 15 |
Employer contributions | 7 |
Domestic Other Postretirement Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 5 |
Employer contributions | 4 |
PacifiCorp [Member] | Domestic Pension Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 5 |
Employer contributions | 2 |
PacifiCorp [Member] | Domestic Other Postretirement Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 0 |
Employer contributions | $ 0 |
Employee Benefit Plans - MEC (D
Employee Benefit Plans - MEC (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Domestic Pension Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | $ 6 | $ 7 | $ 12 | $ 15 |
Interest cost | 29 | 32 | 58 | 63 |
Expected return on plan assets | (40) | (41) | (80) | (81) |
Net amortization | 8 | 13 | 15 | 24 |
Net periodic benefit cost | 3 | 11 | 5 | 21 |
Domestic Other Postretirement Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 2 | 2 | 4 | 5 |
Interest cost | 8 | 8 | 14 | 16 |
Expected return on plan assets | (11) | (10) | (21) | (21) |
Net amortization | (4) | (4) | (7) | (7) |
Net periodic benefit cost | (5) | (4) | (10) | (7) |
MidAmerican Energy Company [Member] | Domestic Pension Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 3 | 2 | 5 | 5 |
Interest cost | 7 | 9 | 15 | 17 |
Expected return on plan assets | (11) | (11) | (22) | (22) |
Net amortization | 1 | 1 | 1 | 1 |
Net periodic benefit cost | 0 | 1 | (1) | 1 |
MidAmerican Energy Company [Member] | Domestic Other Postretirement Plans [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 1 | 2 | 2 | 3 |
Interest cost | 2 | 3 | 4 | 5 |
Expected return on plan assets | (4) | (4) | (7) | (7) |
Net amortization | (1) | (1) | (2) | (2) |
Net periodic benefit cost | $ (2) | $ 0 | $ (3) | $ (1) |
Employee Benefit Plans Employ85
Employee Benefit Plans Employee Benefit Plans - MEC - Employer Contributions (Details) $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
Domestic Pension Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | $ 15 |
Employer contributions | 7 |
Domestic Other Postretirement Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 5 |
Employer contributions | 4 |
MidAmerican Energy Company [Member] | Domestic Pension Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 8 |
Employer contributions | 4 |
MidAmerican Energy Company [Member] | Domestic Other Postretirement Plans [Member] | |
Defined Benefit Plan Disclosure [Line Items] | |
Defined benefit plan, expected contributions in current fiscal year | 1 |
Employer contributions | $ 0 |
Employee Benefit Plans - NPC -
Employee Benefit Plans - NPC - Amounts Payable (Details) - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Dec. 31, 2016 | |
Domestic Pension Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Employer contributions | $ 7 | |
Nevada Power Company [Member] | Other Postretirement Benefit Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Employer contributions | 1 | |
Nevada Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Domestic Pension Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | (26) | $ (24) |
Nevada Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Other Pension Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | (9) | (9) |
Nevada Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Other Postretirement Benefit Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | (4) | (4) |
Nevada Power Company [Member] | Other Current Liabilities [Member] | NV Energy, Inc. [Member] | Other Pension Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities | $ 1 | $ 1 |
Employee Benefit Plans - SPPC -
Employee Benefit Plans - SPPC - Amounts Payable (Details) - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Dec. 31, 2016 | |
Domestic Pension Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Employer contributions | $ 7 | |
Sierra Pacific Power Company [Member] | Other Postretirement Benefit Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Employer contributions | 4 | |
Sierra Pacific Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Domestic Pension Plans [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | 13 | $ 12 |
Sierra Pacific Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Other Pension Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | 9 | 9 |
Sierra Pacific Power Company [Member] | Other Noncurrent Liabilities [Member] | NV Energy, Inc. [Member] | Other Postretirement Benefit Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent | 24 | 28 |
Sierra Pacific Power Company [Member] | Other Current Liabilities [Member] | NV Energy, Inc. [Member] | Other Pension Plan [Member] | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities | $ 1 | $ 1 |
Risk Management and Hedging A88
Risk Management and Hedging Activities - Balance Sheet Location (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 |
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | $ (100) | $ (77) | ||||
Cash collateral, net receivable, offset against derivative positions | 84 | 74 | ||||
Derivative assets (liabilities), at fair value, net | (16) | (3) | ||||
Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 48 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 30 | 48 | ||||
Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 93 | 94 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 93 | 94 | ||||
Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (67) | (60) | ||||
Cash collateral, net receivable, offset against derivative positions | 20 | 13 | ||||
Derivative assets (liabilities), at fair value, net | (47) | (47) | ||||
Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (156) | (159) | ||||
Cash collateral, net receivable, offset against derivative positions | 64 | 61 | ||||
Derivative assets (liabilities), at fair value, net | (92) | (98) | ||||
Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (82) | (66) | ||||
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 47 | ||||
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 87 | 86 | ||||
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (54) | (45) | ||||
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (145) | (154) | ||||
Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (18) | (11) | ||||
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 0 | 1 | ||||
Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 6 | 8 | ||||
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (13) | (15) | ||||
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (11) | (5) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 116 | 135 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (199) | (206) | ||||
Derivative, fair value, net | (83) | (71) | ||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | 162 | $ 180 | 148 | $ 185 | $ 253 | $ 250 |
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 22 | 42 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (4) | (10) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 88 | 86 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (1) | 0 | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 5 | 5 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (55) | (46) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 1 | 2 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (139) | (150) | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 8 | 6 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (29) | (22) | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 1 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 2 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (13) | (14) | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 6 | 3 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (16) | (8) | ||||
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 12 | 15 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (11) | (10) | ||||
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 12 | 15 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (4) | (4) | ||||
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (7) | (6) | ||||
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 6 | 8 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (3) | (3) | ||||
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 6 | 8 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | ||||
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (2) | (3) | ||||
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | $ (1) | $ 0 |
Risk Management and Hedging A89
Risk Management and Hedging Activities - Not Designated as Hedging Contracts (Details) - Not Designated as Hedging Instrument [Member] - Commodity derivative [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Regulatory Assets (Liabilities), Net, Derivatives [Roll Forward] | ||||
Beginning balance | $ 180 | $ 253 | $ 148 | $ 250 |
Changes in fair value recognized in net regulatory assets | 0 | (49) | 33 | (13) |
Net gains (losses) reclassified to operating revenue | 1 | (3) | 14 | (3) |
Net losses reclassified to cost of sales | (19) | (16) | (33) | (49) |
Ending balance | $ 162 | $ 185 | $ 162 | $ 185 |
Risk Management and Hedging A90
Risk Management and Hedging Activities - Designated as Hedging Contracts (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Accumulated Other Comprehensive (Income) Loss, Net, Derivatives [Roll Forward] | ||||
Cash flow hedge ineffectiveness | insignificant | insignificant | insignificant | insignificant |
Cash flow hedge loss to be reclassified within twelve months | $ 13 | |||
Commodity derivative [Member] | ||||
Accumulated Other Comprehensive (Income) Loss, Net, Derivatives [Roll Forward] | ||||
Beginning balance | $ 23 | $ 72 | 16 | $ 46 |
Changes in fair value recognized in OCI | 7 | (28) | 23 | 20 |
Net losses reclassified to cost of sales | (9) | (18) | (18) | (40) |
Ending balance | $ 21 | $ 26 | $ 21 | $ 26 |
Risk Management and Hedging A91
Risk Management and Hedging Activities - Derivative Contract Volumes (Details) gal in Millions, MWh in Millions, Dth in Millions, $ in Millions | Jun. 30, 2017USD ($)galDthMWh | Dec. 31, 2016USD ($)galDthMWh |
Electricity purchases (in megawatt hours) [Member] | Commodity derivative [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | 11 | 5 |
Natural gas purchases (in decatherms) [Member] | Commodity derivative [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | 279 | 271 |
Fuel purchases (in gallons) [Member] | Commodity derivative [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | gal | 5 | 11 |
Interest rate swap [Member] | Interest Rate Contract [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, notional amount | $ (694) | $ (714) |
Mortgage sale commitments, net [Member] | Interest Rate Contract [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, notional amount | $ (348) | $ (309) |
Risk Management and Hedging A92
Risk Management and Hedging Activities - Collateral and Contingent Features (Details) - Commodity derivative [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Derivative [Line Items] | ||
Derivative, net liability position, aggregate fair value | $ (194) | $ (190) |
Collateral already posted, aggregate fair value | 73 | 69 |
Additional collateral, aggregate fair value | $ 112 | $ 110 |
Risk Management and Hedging A93
Risk Management and Hedging Activities - PacifiCorp - Balance Sheet Location (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 |
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | $ (100) | $ (77) | ||||
Cash collateral, net receivable, offset against derivative positions | 84 | 74 | ||||
Derivative assets (liabilities), at fair value, net | (16) | (3) | ||||
Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 48 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 30 | 48 | ||||
Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 93 | 94 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 93 | 94 | ||||
Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (67) | (60) | ||||
Cash collateral, net receivable, offset against derivative positions | 20 | 13 | ||||
Derivative assets (liabilities), at fair value, net | (47) | (47) | ||||
Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (156) | (159) | ||||
Cash collateral, net receivable, offset against derivative positions | 64 | 61 | ||||
Derivative assets (liabilities), at fair value, net | (92) | (98) | ||||
Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (82) | (66) | ||||
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 47 | ||||
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 87 | 86 | ||||
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (54) | (45) | ||||
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (145) | (154) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 116 | 135 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (199) | (206) | ||||
Derivative, fair value, net | (83) | (71) | ||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | 162 | $ 180 | 148 | $ 185 | $ 253 | $ 250 |
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 22 | 42 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (4) | (10) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 88 | 86 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (1) | 0 | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 5 | 5 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (55) | (46) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 1 | 2 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (139) | (150) | ||||
PacifiCorp [Member] | Commodity derivative [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (99) | (77) | ||||
Cash collateral, net receivable, offset against derivative positions | 73 | 69 | ||||
Derivative assets (liabilities), at fair value, net | (26) | (8) | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 6 | 18 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 6 | 18 | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 0 | 2 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 0 | 2 | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (21) | (13) | ||||
Cash collateral, net receivable, offset against derivative positions | 15 | 10 | ||||
Derivative assets (liabilities), at fair value, net | (6) | (3) | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (84) | (84) | ||||
Cash collateral, net receivable, offset against derivative positions | 58 | 59 | ||||
Derivative assets (liabilities), at fair value, net | (26) | (25) | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 10 | 27 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (109) | (104) | ||||
Derivative, fair value, net | (99) | (77) | ||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | 95 | $ 103 | 73 | $ 89 | $ 144 | $ 133 |
PacifiCorp [Member] | Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 9 | 24 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (3) | (6) | ||||
Derivative, fair value, net | 6 | 18 | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 2 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | ||||
Derivative, fair value, net | 0 | 2 | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 1 | 1 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (22) | (14) | ||||
Derivative, fair value, net | (21) | (13) | ||||
PacifiCorp [Member] | Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (84) | (84) | ||||
Derivative, fair value, net | $ (84) | $ (84) |
Risk Management and Hedging A94
Risk Management and Hedging Activities - PacifiCorp - Not Designated as Hedging Contracts (Details) - Not Designated as Hedging Instrument [Member] - Commodity derivative [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Line Items] | ||||
Beginning balance | $ 180 | $ 253 | $ 148 | $ 250 |
Changes in fair value recognized in net regulatory assets | 0 | (49) | 33 | (13) |
Net gains (losses) reclassified to operating revenue | 1 | (3) | 14 | (3) |
Ending balance | 162 | 185 | 162 | 185 |
PacifiCorp [Member] | ||||
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Line Items] | ||||
Beginning balance | 103 | 144 | 73 | 133 |
Changes in fair value recognized in net regulatory assets | 6 | (45) | 30 | (19) |
Net gains (losses) reclassified to operating revenue | 1 | 2 | 13 | 10 |
Net Gains (Losses) Reclassified To Cost Of Domestic Regulated Electric | (15) | (12) | (21) | (35) |
Ending balance | $ 95 | $ 89 | $ 95 | $ 89 |
Risk Management and Hedging A95
Risk Management and Hedging Activities - PacifiCorp - Derivative Contract Volumes (Details) - Commodity derivative [Member] gal in Millions, MWh in Millions, Dth in Millions | Jun. 30, 2017galDthMWh | Dec. 31, 2016galDthMWh |
Electricity purchases (in megawatt hours) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | (11) | (5) |
Natural gas purchases (in decatherms) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | (279) | (271) |
Fuel purchases (in gallons) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | gal | (5) | (11) |
PacifiCorp [Member] | Electricity purchases (in megawatt hours) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | (1) | (3) |
PacifiCorp [Member] | Natural gas purchases (in decatherms) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | (85) | (84) |
PacifiCorp [Member] | Fuel purchases (in gallons) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | gal | (5) | (11) |
Risk Management and Hedging A96
Risk Management and Hedging Activities - PacifiCorp - Collateral and Contingent Features (Details) - Commodity derivative [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Derivative [Line Items] | ||
Derivative, net liability position, aggregate fair value | $ (194) | $ (190) |
Collateral already posted, aggregate fair value | 73 | 69 |
Additional collateral, aggregate fair value | 112 | 110 |
PacifiCorp [Member] | ||
Derivative [Line Items] | ||
Derivative, net liability position, aggregate fair value | 102 | 97 |
Collateral already posted, aggregate fair value | 73 | 69 |
Additional collateral, aggregate fair value | $ 26 | $ 22 |
Risk Management and Hedging A97
Risk Management and Hedging Activities - MEC - Balance Sheet Location (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 |
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | $ (100) | $ (77) | ||||
Cash collateral, net receivable, offset against derivative positions | 84 | 74 | ||||
Derivative assets (liabilities), at fair value, net | (16) | (3) | ||||
Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 48 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 30 | 48 | ||||
Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 93 | 94 | ||||
Cash collateral, net receivable, offset against derivative positions | 0 | 0 | ||||
Derivative assets (liabilities), at fair value, net | 93 | 94 | ||||
Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (67) | (60) | ||||
Cash collateral, net receivable, offset against derivative positions | 20 | 13 | ||||
Derivative assets (liabilities), at fair value, net | (47) | (47) | ||||
Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (156) | (159) | ||||
Cash collateral, net receivable, offset against derivative positions | 64 | 61 | ||||
Derivative assets (liabilities), at fair value, net | (92) | (98) | ||||
Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (82) | (66) | ||||
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 30 | 47 | ||||
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 87 | 86 | ||||
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (54) | (45) | ||||
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (145) | (154) | ||||
Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (18) | (11) | ||||
Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 0 | 1 | ||||
Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | 6 | 8 | ||||
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (13) | (15) | ||||
Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative, fair value, net | (11) | (5) | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 116 | 135 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 199 | 206 | ||||
Derivative, fair value, net | (83) | (71) | ||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | 162 | $ 180 | 148 | $ 185 | $ 253 | $ 250 |
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 22 | 42 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 4 | 10 | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 88 | 86 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 1 | 0 | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 5 | 5 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 55 | 46 | ||||
Commodity derivative [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 1 | 2 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 139 | 150 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 8 | 6 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 29 | 22 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 1 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 2 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 13 | 14 | ||||
Commodity derivative [Member] | Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||
Derivatives, Fair Value [Line Items] | ||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 6 | 3 | ||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | $ 16 | $ 8 |
Risk Management and Hedging A98
Risk Management and Hedging Activities - MEC - Not Designated as Hedging Contracts (Details) - Not Designated as Hedging Instrument [Member] - Commodity derivative [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Regulatory Assets (Liabilities), Net, Derivatives [Roll Forward] | ||||
Beginning balance | $ 180 | $ 253 | $ 148 | $ 250 |
Changes in fair value recognized in net regulatory assets | 0 | (49) | 33 | (13) |
Net gains (losses) reclassified to operating revenue | 1 | (3) | 14 | (3) |
Ending balance | $ 162 | $ 185 | $ 162 | $ 185 |
Risk Management and Hedging A99
Risk Management and Hedging Activities - MEC - Designated as Hedging Contracts (Details) - Commodity derivative [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Accumulated Other Comprehensive (Income) Loss, Net, Derivatives [Roll Forward] | ||||
Accumulated other comprehensive income (loss), net, cummulative net gain (loss) from cash flow hedges, effect before taxes | $ (23) | $ (72) | $ (16) | $ (46) |
Changes in fair value recognized in OCI | 7 | (28) | 23 | 20 |
Accumulated other comprehensive income (loss), net, cummulative net gain (loss) from cash flow hedges, effect before taxes | $ (21) | $ (26) | $ (21) | $ (26) |
Risk Management and Hedging 100
Risk Management and Hedging Activities - MEC - Derivative Contract Volumes (Details) - Commodity derivative [Member] MWh in Millions, Dth in Millions | Jun. 30, 2017DthMWh | Dec. 31, 2016DthMWh |
Electricity purchases (in megawatt hours) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | 11 | 5 |
Natural gas purchases (in decatherms) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | 279 | 271 |
Risk Management and Hedging 101
Risk Management and Hedging Activities - MEC - Collateral and Contingent Features (Details) - Commodity derivative [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Derivative [Line Items] | ||
Collateral already posted, aggregate fair value | $ 73 | $ 69 |
Derivative, net liability position, aggregate fair value | (194) | (190) |
Additional collateral, aggregate fair value | $ 112 | $ 110 |
Risk Management and Hedging 102
Risk Management and Hedging Activities - NPC - Balance Sheet Location (Details) - Commodity derivative [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | ||
Not Designated as Hedging Instrument [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | $ 199 | $ 206 | ||||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | 162 | $ 180 | 148 | $ 185 | $ 253 | $ 250 | ||
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 55 | 46 | ||||||
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 139 | 150 | ||||||
Nevada Power Company [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | [1] | 3 | 7 | |||||
Nevada Power Company [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | [1] | 1 | 7 | |||||
Recurring [Member] | Nevada Power Company [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 4 | 14 | ||||||
Recurring [Member] | Level 3 [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 15 | 27 | ||||||
Recurring [Member] | Level 3 [Member] | Nevada Power Company [Member] | ||||||||
Derivatives, Fair Value [Line Items] | ||||||||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | [1] | 4 | 14 | |||||
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts | $ 4 | $ 14 | [1] | |||||
[1] | (1)Nevada Power's commodity derivatives not designated as hedging contracts are included in regulated rates and as of June 30, 2017 and December 31, 2016, a regulatory asset of $4 million and $14 million, respectively, was recorded related to the derivative liability of $4 million and $14 million, respectively. |
Risk Management and Hedging 103
Risk Management and Hedging Activities - NPC - Derivative Contract Volumes (Details) - Commodity derivative [Member] MWh in Millions, Dth in Millions | Jun. 30, 2017DthMWh | Dec. 31, 2016DthMWh |
Electricity purchases (in megawatt hours) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | 11 | 5 |
Natural gas purchases (in decatherms) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | 279 | 271 |
Nevada Power Company [Member] | Electricity purchases (in megawatt hours) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | MWh | 0 | 2 |
Nevada Power Company [Member] | Natural gas purchases (in decatherms) [Member] | ||
Notional Amounts of Outstanding Derivative Positions [Line Items] | ||
Derivative, nonmonetary notional amount | Dth | 123 | 114 |
Risk Management and Hedging 104
Risk Management and Hedging Activities - NPC - Collateral and Contingent Features (Details) - Commodity derivative [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Derivative [Line Items] | ||
Derivative, net liability position, aggregate fair value | $ (194) | $ (190) |
Nevada Power Company [Member] | ||
Derivative [Line Items] | ||
Derivative, net liability position, aggregate fair value | $ 2 | $ 2 |
Fair Value Measurements (Detail
Fair Value Measurements (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||||||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Cash collateral, net receivable, offset against derivative positions | $ 84 | $ 84 | $ 74 | |||||
Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (19) | (22) | |||||
Assets, fair value disclosure | 3,341 | 3,341 | 2,878 | |||||
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 103 | 96 | |||||
Derivative liabilities | (139) | (139) | (145) | |||||
Cash collateral, net receivable, offset against derivative positions | 84 | 84 | 74 | |||||
Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Assets, fair value disclosure | 2,769 | 2,769 | 2,339 | |||||
Derivative liabilities | (2) | (2) | (3) | |||||
Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Assets, fair value disclosure | 485 | 485 | 467 | |||||
Derivative liabilities | (223) | (223) | (210) | |||||
Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Assets, fair value disclosure | 106 | 106 | 94 | |||||
Derivative liabilities | (17) | (17) | (28) | |||||
Mortgage Loans on Real Estate [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 408 | 408 | 359 | |||||
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 408 | 408 | 359 | |||||
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Money market mutual funds [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 773 | 773 | 586 | |||||
Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 773 | 773 | 586 | |||||
Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
United States government obligations [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 161 | 161 | 161 | |||||
United States government obligations [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 161 | 161 | 161 | |||||
United States government obligations [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
United States government obligations [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
International government obligations [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 4 | 4 | 3 | |||||
International government obligations [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
International government obligations [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 4 | 4 | 3 | |||||
International government obligations [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Corporate obligations [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 36 | 36 | 36 | |||||
Corporate obligations [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Corporate obligations [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 36 | 36 | 36 | |||||
Corporate obligations [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Municipal obligations [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 2 | 2 | 2 | |||||
Municipal obligations [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Municipal obligations [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 2 | 2 | 2 | |||||
Municipal obligations [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Agency, asset and mortgage-backed obligations [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 1 | 1 | 2 | |||||
Agency, asset and mortgage-backed obligations [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Agency, asset and mortgage-backed obligations [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 1 | 1 | 2 | |||||
Agency, asset and mortgage-backed obligations [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
United States companies [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 270 | 270 | 250 | |||||
United States companies [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 270 | 270 | 250 | |||||
United States companies [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
United States companies [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
International companies [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 1,388 | 1,388 | 1,190 | |||||
International companies [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 1,388 | 1,388 | 1,190 | |||||
International companies [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
International companies [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Investment funds [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 175 | 175 | 147 | |||||
Investment funds [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 175 | 175 | 147 | |||||
Investment funds [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Investment funds [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Available-for-sale securities | 0 | 0 | 0 | |||||
Commodity derivative [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (19) | (22) | |||||
Derivative assets | 105 | 105 | 119 | |||||
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 103 | 96 | |||||
Derivative liabilities | (125) | (125) | (132) | |||||
Commodity derivative [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 2 | 5 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (2) | (2) | (2) | |||||
Commodity derivative [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 26 | 26 | 49 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (211) | (211) | (199) | |||||
Commodity derivative [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 96 | 96 | 87 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (15) | (15) | (27) | |||||
Interest Rate Contract [Member] | Recurring [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative assets | 18 | 18 | 23 | |||||
Derivative liabilities | (14) | (14) | (13) | |||||
Interest Rate Contract [Member] | Recurring [Member] | Level 1 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | 0 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | 0 | 0 | (1) | |||||
Interest Rate Contract [Member] | Recurring [Member] | Level 2 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 8 | 8 | 16 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (12) | (12) | (11) | |||||
Interest Rate Contract [Member] | Recurring [Member] | Level 3 [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 10 | 10 | 7 | |||||
Derivative liability, fair value, gross liability including not subject to master netting arrangement | (2) | (2) | (1) | |||||
Commodity derivative [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value | 81 | $ 44 | 81 | $ 44 | $ 72 | 60 | $ 58 | $ 47 |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings | 0 | 20 | (12) | 1 | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included in Other Comprehensive Income (Loss) | 0 | (6) | 2 | 0 | ||||
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net | 3 | 5 | 2 | 11 | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 1 | 1 | ||||||
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements | (11) | (5) | (12) | (9) | ||||
Interest Rate Lock Commitments [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value | 8 | 14 | 8 | 14 | 9 | 6 | 11 | 4 |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings | (39) | (29) | (66) | (54) | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included in Other Comprehensive Income (Loss) | 0 | 0 | 0 | 0 | ||||
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net | 0 | 0 | 0 | 0 | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 0 | (2) | ||||||
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements | 40 | 0 | 62 | 44 | ||||
Auction rate securities [Member] | ||||||||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value | 0 | 18 | 0 | 18 | $ 0 | $ 0 | $ 26 | $ 44 |
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings | 0 | 0 | 0 | 0 | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included in Other Comprehensive Income (Loss) | 0 | (2) | 0 | (6) | ||||
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net | 0 | 0 | 0 | 0 | ||||
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 0 | 0 | ||||||
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements | $ 0 | $ 26 | $ 0 | $ 0 |
Fair Value Measurements - Level
Fair Value Measurements - Level 3 (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Commodity derivative [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | $ 72 | $ 58 | $ 60 | $ 47 |
Changes included in earnings | 0 | (20) | 12 | (1) |
Changes in fair value recognized in other comprehensive income | 0 | 6 | (2) | 0 |
Changes in fair value recognized in net regulatory assets | (3) | (5) | (2) | (11) |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 1 | 1 | ||
Fair value, level 3, asset, sales | 0 | 0 | ||
Settlements | 11 | 5 | 12 | 9 |
Ending balance | 81 | 44 | 81 | 44 |
Interest Rate Lock Commitments [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | 9 | 11 | 6 | 4 |
Changes included in earnings | 39 | 29 | 66 | 54 |
Changes in fair value recognized in other comprehensive income | 0 | 0 | 0 | 0 |
Changes in fair value recognized in net regulatory assets | 0 | 0 | 0 | 0 |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 0 | (2) | ||
Fair value, level 3, asset, sales | 0 | 0 | ||
Settlements | (40) | 0 | (62) | (44) |
Ending balance | 8 | 14 | 8 | 14 |
Auction rate securities [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | 0 | 26 | 0 | 44 |
Changes included in earnings | 0 | 0 | 0 | 0 |
Changes in fair value recognized in other comprehensive income | 0 | 2 | 0 | 6 |
Changes in fair value recognized in net regulatory assets | 0 | 0 | 0 | 0 |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases | 0 | 0 | ||
Fair value, level 3, asset, sales | (10) | (32) | ||
Settlements | 0 | (26) | 0 | 0 |
Ending balance | $ 0 | $ 18 | $ 0 | $ 18 |
Fair Value Measurements - Debt
Fair Value Measurements - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 41,340 | $ 40,718 |
Fair Value Measurements - Pacif
Fair Value Measurements - PacifiCorp (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Cash collateral, net receivable, offset against derivative positions | $ 84 | $ 74 |
Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (22) |
Assets, fair value disclosure | 3,341 | 2,878 |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 96 |
Derivative Liability | (139) | (145) |
Cash collateral, net receivable, offset against derivative positions | 84 | 74 |
Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 2,769 | 2,339 |
Derivative Liability | (2) | (3) |
Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 485 | 467 |
Derivative Liability | (223) | (210) |
Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 106 | 94 |
Derivative Liability | (17) | (28) |
Commodity derivative [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (22) |
Derivative assets | 105 | 119 |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 96 |
Derivative Liability | (125) | (132) |
Commodity derivative [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 5 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (2) | (2) |
Commodity derivative [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 26 | 49 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (211) | (199) |
Commodity derivative [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 96 | 87 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (15) | (27) |
Money market mutual funds [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 773 | 586 |
Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 773 | 586 |
Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
Investment funds [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 175 | 147 |
Investment funds [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 175 | 147 |
Investment funds [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
Trading Securities | 0 | |
Investment funds [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
Trading Securities | 0 | |
PacifiCorp [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 192 | 50 |
PacifiCorp [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 186 | 30 |
PacifiCorp [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 10 | 27 |
PacifiCorp [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Assets, fair value disclosure | 0 | 0 |
PacifiCorp [Member] | Commodity derivative [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Cash collateral, net receivable, offset against derivative positions | 73 | 69 |
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (4) | (7) |
Derivative assets | 6 | 20 |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 77 | 76 |
Derivative Liability | (32) | (28) |
Cash collateral, net receivable, offset against derivative positions | 73 | 69 |
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 10 | 27 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (109) | (104) |
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 167 | 13 |
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 167 | 13 |
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Available-for-sale securities | 0 | 0 |
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Trading Securities | 19 | 17 |
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Trading Securities | 19 | 17 |
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Trading Securities | 0 | 0 |
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
Trading Securities | $ 0 | $ 0 |
Fair Value Measurements - Pa109
Fair Value Measurements - PacifiCorp - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | 41,340 | 40,718 |
PacifiCorp [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | 7,004 | 7,052 |
PacifiCorp [Member] | Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 8,260 | $ 8,204 |
Fair Value Measurements - MEC (
Fair Value Measurements - MEC (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Cash collateral, net receivable, offset against derivative positions | $ 84 | $ 74 | |
Recurring [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Cash collateral, net receivable, offset against derivative positions | 84 | 74 | |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (22) | |
Assets, fair value disclosure | 3,341 | 2,878 | |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 96 | |
Recurring [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Recurring [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 161 | 161 | |
Recurring [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 4 | 3 | |
Recurring [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 36 | 36 | |
Recurring [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 2 | 2 | |
Recurring [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1 | 2 | |
Recurring [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 270 | 250 | |
Recurring [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1,388 | 1,190 | |
Recurring [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Recurring [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 2,769 | 2,339 | |
Recurring [Member] | Level 1 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Recurring [Member] | Level 1 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 161 | 161 | |
Recurring [Member] | Level 1 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 1 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 1 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 1 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 1 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 270 | 250 | |
Recurring [Member] | Level 1 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1,388 | 1,190 | |
Recurring [Member] | Level 1 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Recurring [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 485 | 467 | |
Recurring [Member] | Level 2 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 2 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 2 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 4 | 3 | |
Recurring [Member] | Level 2 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 36 | 36 | |
Recurring [Member] | Level 2 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 2 | 2 | |
Recurring [Member] | Level 2 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1 | 2 | |
Recurring [Member] | Level 2 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 2 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 2 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Trading Securities | 0 | ||
Recurring [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 106 | 94 | |
Recurring [Member] | Level 3 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Recurring [Member] | Level 3 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Trading Securities | 0 | ||
Commodity derivative [Member] | Recurring [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | (19) | (22) | |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | 103 | 96 | |
Commodity derivative [Member] | Recurring [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 5 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (2) | (2) | |
Commodity derivative [Member] | Recurring [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 26 | 49 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (211) | (199) | |
Commodity derivative [Member] | Recurring [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 96 | 87 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (15) | (27) | |
MidAmerican Energy Company [Member] | Recurring [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Cash collateral, net receivable, offset against derivative positions | 1 | 1 | |
Assets, fair value disclosure | 867 | 477 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 370 | 1 |
MidAmerican Energy Company [Member] | Recurring [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 161 | 161 | |
MidAmerican Energy Company [Member] | Recurring [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 4 | 3 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 36 | 36 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 2 | 2 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1 | 2 | |
MidAmerican Energy Company [Member] | Recurring [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 270 | 250 | |
MidAmerican Energy Company [Member] | Recurring [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 7 | 5 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Trading Securities | 14 | 9 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 822 | 426 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 370 | 1 |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 161 | 161 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 270 | 250 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 7 | 5 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 1 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Trading Securities | 14 | 9 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 45 | 52 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 0 | 0 |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 4 | 3 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 36 | 36 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 2 | 2 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 1 | 2 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 2 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Trading Securities | 0 | ||
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 2 | 1 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 0 | 0 |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | United States government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | International government obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | Corporate obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | Municipal obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | Agency, asset and mortgage-backed obligations [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | United States companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | International companies [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
MidAmerican Energy Company [Member] | Recurring [Member] | Level 3 [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Trading Securities | 0 | ||
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Recurring [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 8 | |
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | [2] | (2) | (2) |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (6) | (3) | |
Derivative liability, fair value, gross asset and right to reclaim cash, offset | [2] | 3 | 3 |
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Recurring [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 0 | 0 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | |
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Recurring [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 9 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (6) | (3) | |
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Recurring [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 2 | 1 | |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | $ (3) | $ (3) | |
[1] | Amounts are included in cash and cash equivalents and investments and restricted cash and investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost. | ||
[2] | Represents netting under master netting arrangements and a net cash collateral receivable of $1 million and $1 million as of June 30, 2017 and December 31, 2016, respectively. |
Fair Value Measurements - MEC -
Fair Value Measurements - MEC - Level 3 (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Derivative [Member] | MidAmerican Energy Company [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | $ 1 | $ (4) | $ (2) | $ (6) |
Fair value, level 3, transferred to affiliate | 0 | (4) | ||
Changes in fair value recognized in other comprehensive income | 0 | 0 | ||
Changes in fair value recognized in net regulatory assets | (2) | (3) | 0 | (4) |
Fair value, level 3, asset, sales | 0 | 0 | ||
Settlements | 0 | 5 | 1 | 12 |
Ending balance | (1) | (2) | (1) | (2) |
Auction rate securities [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | 0 | 26 | 0 | 44 |
Changes included in earnings | 0 | 0 | 0 | 0 |
Changes in fair value recognized in other comprehensive income | 0 | 2 | 0 | 6 |
Changes in fair value recognized in net regulatory assets | 0 | 0 | 0 | 0 |
Purchases | 0 | 0 | ||
Fair value, level 3, asset, sales | (10) | (32) | ||
Settlements | 0 | (26) | 0 | 0 |
Ending balance | 0 | 18 | 0 | 18 |
Auction rate securities [Member] | MidAmerican Energy Company [Member] | ||||
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
Beginning balance | 0 | 26 | 0 | 26 |
Fair value, level 3, transferred to affiliate | 0 | 0 | ||
Changes in fair value recognized in other comprehensive income | 2 | 3 | ||
Changes in fair value recognized in net regulatory assets | 0 | 0 | 0 | 0 |
Fair value, level 3, asset, sales | (10) | (11) | ||
Settlements | 0 | 0 | 0 | 0 |
Ending balance | $ 0 | $ 18 | $ 0 | $ 18 |
Fair Value Measurements - ME112
Fair Value Measurements - MEC - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | 41,340 | 40,718 |
MidAmerican Energy Company [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | 4,893 | 4,301 |
Long-term debt, fair value | $ 4,735 | |
MidAmerican Energy Company [Member] | Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 5,438 |
Fair Value Measurements - MidAm
Fair Value Measurements - MidAmerican Funding - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | 41,340 | 40,718 |
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | 5,219 | 4,627 |
Long-term debt, fair value | $ 5,164 | |
MidAmerican Funding, LLC and Subsidiaries [Domain] | Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 5,867 |
Fair Value Measurements - NPC (
Fair Value Measurements - NPC (Details) - Recurring [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | $ 3,341 | $ 2,878 | |
Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 2,769 | 2,339 | |
Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 485 | 467 | |
Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 106 | 94 | |
Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Money market mutual funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Money market mutual funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Money market mutual funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Investment funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Investment funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Investment funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Commodity derivative [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 2 | 2 | |
Commodity derivative [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 211 | 199 | |
Commodity derivative [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 15 | 27 | |
Nevada Power Company [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 226 | ||
Nevada Power Company [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 0 | ||
Nevada Power Company [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 0 | ||
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 220 | |
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 0 | |
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 0 | |
Nevada Power Company [Member] | Investment funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 6 | ||
Assets, fair value disclosure | 2 | ||
Nevada Power Company [Member] | Investment funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | ||
Assets, fair value disclosure | 0 | ||
Nevada Power Company [Member] | Investment funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | ||
Assets, fair value disclosure | 0 | ||
Nevada Power Company [Member] | Commodity derivative [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 4 | 14 | |
Nevada Power Company [Member] | Commodity derivative [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | |
Nevada Power Company [Member] | Commodity derivative [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 | |
Nevada Power Company [Member] | Commodity derivative [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | [2] | $ 4 | $ 14 |
[1] | Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. | ||
[2] | (1)Nevada Power's commodity derivatives not designated as hedging contracts are included in regulated rates and as of June 30, 2017 and December 31, 2016, a regulatory asset of $4 million and $14 million, respectively, was recorded related to the derivative liability of $4 million and $14 million, respectively. |
Fair Value Measurements - NPC -
Fair Value Measurements - NPC - Level 3 (Details) - Nevada Power Company [Member] - Commodity [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||
Beginning balance | $ (14) | $ (22) | $ (14) | $ (22) |
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net | 1 | 2 | 2 | 5 |
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements | (11) | (2) | (12) | (5) |
Ending balance | $ (4) | $ (22) | $ (4) | $ (22) |
Fair Value Measurements - NP116
Fair Value Measurements - NPC - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Nevada Power Company [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | 2,598 | 2,581 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | 41,340 | 40,718 |
Level 2 [Member] | Nevada Power Company [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 3,067 | $ 3,040 |
Fair Value Measurements Fair Va
Fair Value Measurements Fair Value Measurements - SPPC (Details) - Recurring [Member] - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | $ 3,341 | $ 2,878 | |
Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 2,769 | 2,339 | |
Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 485 | 467 | |
Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 106 | 94 | |
Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Investment funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 175 | 147 | |
Investment funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Investment funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Money market mutual funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 773 | 586 | |
Money market mutual funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Money market mutual funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Sierra Pacific Power Company [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 36 | ||
Sierra Pacific Power Company [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 36 | ||
Sierra Pacific Power Company [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 0 | ||
Sierra Pacific Power Company [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Assets, fair value disclosure | 0 | ||
Sierra Pacific Power Company [Member] | Investment funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 1 | |
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 1 | |
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | 0 | 0 | |
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | $ 0 | 0 | |
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 35 | |
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 1 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 35 | |
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 2 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | 0 | |
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 3 [Member] | |||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||
Available-for-sale securities | [1] | $ 0 | |
[1] | (1)Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. |
Fair Value Measurements - SPPC
Fair Value Measurements - SPPC - Debt (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | $ 36,048 | $ 36,116 |
Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | 41,340 | 40,718 |
Sierra Pacific Power Company [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, carrying value | 1,121 | 1,119 |
Sierra Pacific Power Company [Member] | Level 2 [Member] | ||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
Long-term debt, fair value | $ 1,204 | $ 1,191 |
Commitments and Contingencies -
Commitments and Contingencies - Commitments (Details) $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
MidAmerican Energy Company [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Operating Leases, Future Minimum Payments Due | $ 114 |
PacifiCorp [Member] | Klamath Hydroelectric System [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Dam removal cost limit | 200 |
PacifiCorp [Member] | Klamath Hydroelectric System [Member] | OREGON | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Dam removal cost limit | 184 |
PacifiCorp [Member] | Klamath Hydroelectric System [Member] | CALIFORNIA | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Dam removal cost limit | 16 |
Additional dam removal costs, California bond measure | 250 |
Natural Gas Contracts For Resale [Member] | MidAmerican Energy Company [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Purchase Obligation, Due Through Fifth Year | 247 |
Purchase Obligation, Due after Fifth Year | 70 |
Capital Addition Purchase Commitments [Member] | MidAmerican Energy Company [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Purchase Obligation | 514 |
Purchase Obligation, Due in Next Twelve Months | 222 |
Purchase Obligation, Due in Second Year | 284 |
Purchase Obligation, Due in Third Year | $ 8 |
Commitments and Contingencies C
Commitments and Contingencies Commitments and Contingencies - PacifiCorp - Hydroelectric (Details) - PacifiCorp [Member] - Klamath Hydroelectric System [Member] $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
Hydroelectric [Line Items] | |
Dam removal cost limit | $ 200 |
OREGON | |
Hydroelectric [Line Items] | |
Dam removal cost limit | 184 |
CALIFORNIA | |
Hydroelectric [Line Items] | |
Additional dam removal costs, California bond measure | 250 |
Dam removal cost limit | $ 16 |
Commitments and Contingencie121
Commitments and Contingencies Commitments and Contingencies - MEC- Commitments (Details) - MidAmerican Energy Company [Member] $ in Millions | Jun. 30, 2017USD ($) |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Operating Leases, Future Minimum Payments Due | $ 114 |
Natural Gas Contracts For Resale [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Purchase Obligation, Due Through Fifth Year | 247 |
Purchase Obligation, Due after Fifth Year | 70 |
Capital Addition Purchase Commitments [Member] | |
ContractualObligationFiscalYearMaturityScheduleTable [Line Items] | |
Purchase Obligation | 514 |
Purchase Obligation, Due in Next Twelve Months | 222 |
Purchase Obligation, Due in Second Year | 284 |
Purchase Obligation, Due in Third Year | $ 8 |
Commitments and Contingencie122
Commitments and Contingencies Commitments and Contingencies - MEC - Transmission Rates (Details) - MidAmerican Energy Company [Member] - Electric Transmission [Member] $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
Loss Contingencies [Line Items] | |
Public Utilities, Approved Return on Equity Adder, Percentage | 0.50% |
Unfavorable Regulatory Action [Member] | |
Loss Contingencies [Line Items] | |
Accrued liability for estimated transmission billings refunds | $ 9 |
Prior to September 2016 [Member] | |
Loss Contingencies [Line Items] | |
Public Utilities, Approved Return on Equity, Percentage | 12.38% |
November 2013 to February 2015 [Member] | |
Loss Contingencies [Line Items] | |
Public Utilities, Approved Return on Equity, Percentage | 10.32% |
Public Utilities, Intervenor Proposed Return On Equity, Percentage | 9.15% |
February 2015 through May 2016 [Member] | |
Loss Contingencies [Line Items] | |
Public Utilities, Intervenor Proposed Return On Equity, Percentage | 8.67% |
Commitments and Contingencie123
Commitments and Contingencies Commitments and Contingencies - NPC - Environmental Laws and Regulations (Details) - Nevada Power Company [Member] - MW | 1 Months Ended | 6 Months Ended | 12 Months Ended | |||
Apr. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | |
300 Megawatts of Coal Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
Coal-Fired Power Plant Capacity | 300 | |||||
257 Megawatts of Coal Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
Coal-Fired Power Plant Capacity | 257 | |||||
812 Megawatts of Coal Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
Coal-Fired Power Plant Capacity | 812 | |||||
272 Megawatts of Natural Gas Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 272 | |||||
210 Megawatts of Natural Gas Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 210 | |||||
15 Megawatts of Solar Renewable Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 15 | |||||
100 Megawatts of Solar Renewable Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 100 | 100 | ||||
130 Megawatts of Natural Gas Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 130 | |||||
Ownership Percentage Acquired | 25.00% | |||||
54 Megawatts of Natural Gas Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 54 | |||||
35 Megawatts of Renewable Energy [Member] | ||||||
Supply Commitment [Line Items] | ||||||
New Generation Capacity | 35 |
Components of Accumulated Ot124
Components of Accumulated Other Comprehensive Loss, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Beginning balance - Accumulated other comprehensive loss, net | $ (1,511) | |||
Other comprehensive income (loss), unrecognized amounts on retirement benefits | $ (4) | $ 40 | 1 | $ 62 |
Other comprehensive income (loss), foreign currency translation adjustment | 221 | (272) | 308 | (205) |
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 81 | 38 | 119 | 71 |
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (2) | 24 | (6) | 1 |
Other comprehensive income (loss) | 296 | (170) | 422 | (71) |
Ending balance - Accumulated other comprehensive loss, net | (1,089) | (1,089) | ||
Accumulated Other Comprehensive (Loss) Income, Net [Member] | ||||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Beginning balance - unrecognized amounts on retirement benefits | (447) | (438) | ||
Beginning balance - foreign currency translation adjustment | (1,675) | (1,092) | ||
Beginning balance - unrealized gains (losses) on available-for-sale securities | 585 | 615 | ||
Beginning balance - unrealized gains (losses) on cash flow hedges | 26 | 7 | ||
Beginning balance - Accumulated other comprehensive loss, net | (1,511) | (908) | ||
Other comprehensive income (loss), unrecognized amounts on retirement benefits | 1 | 62 | ||
Other comprehensive income (loss), foreign currency translation adjustment | 308 | (205) | ||
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 119 | 71 | ||
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (6) | 1 | ||
Other comprehensive income (loss) | 422 | (71) | ||
Ending balance - unrecognized amounts on retirement benefits | (446) | (376) | (446) | (376) |
Ending balance - foreign currency translation adjustment | (1,367) | (1,297) | (1,367) | (1,297) |
Ending balance - unrealized gains (losses) on available-for-sale securities | 704 | 686 | 704 | 686 |
Ending balance - unrealized gains (losses) on cash flow hedges | 20 | 8 | 20 | 8 |
Ending balance - Accumulated other comprehensive loss, net | $ (1,089) | $ (979) | $ (1,089) | $ (979) |
Components of Accumulated Ot125
Components of Accumulated Other Comprehensive Loss, Net - MEC (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | ||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Beginning balance - Accumulated other comprehensive loss, net | $ (1,511) | |||
Other comprehensive income (loss), unrealized gains on available-for-sale securities | $ 81 | $ 38 | 119 | $ 71 |
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (2) | 24 | (6) | 1 |
Other comprehensive income (loss) | 296 | (170) | 422 | (71) |
Ending balance - Accumulated other comprehensive loss, net | (1,089) | (1,089) | ||
Accumulated Other Comprehensive (Loss) Income, Net [Member] | ||||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Beginning balance - unrealized gains (losses) on available-for-sale securities | 585 | 615 | ||
Beginning balance - unrealized gains (losses) on cash flow hedges | 26 | 7 | ||
Beginning balance - Accumulated other comprehensive loss, net | (1,511) | (908) | ||
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 119 | 71 | ||
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | (6) | 1 | ||
Other comprehensive income (loss) | 422 | (71) | ||
Ending balance - unrealized gains (losses) on available-for-sale securities | 704 | 686 | 704 | 686 |
Ending balance - unrealized gains (losses) on cash flow hedges | 20 | 8 | 20 | 8 |
Ending balance - Accumulated other comprehensive loss, net | $ (1,089) | (979) | $ (1,089) | (979) |
MidAmerican Energy Company [Member] | ||||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Other comprehensive income (loss) | 2 | |||
Dividend, unrealized losses on cash flow hedges, transfer of operations | (90) | |||
MidAmerican Energy Company [Member] | Accumulated Other Comprehensive (Loss) Income, Net [Member] | ||||
Accumulated Other Comprehensive Income (Loss) [Roll Forward] | ||||
Beginning balance - unrealized gains (losses) on available-for-sale securities | (3) | |||
Beginning balance - unrealized gains (losses) on cash flow hedges | (27) | |||
Beginning balance - Accumulated other comprehensive loss, net | (30) | |||
Other comprehensive income (loss), unrealized gains on available-for-sale securities | 2 | |||
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges | 0 | |||
Other comprehensive income (loss) | 2 | |||
Dividend, unrealized losses on cash flow hedges, transfer of operations | (27) | |||
Ending balance - unrealized gains (losses) on available-for-sale securities | (1) | (1) | ||
Ending balance - unrealized gains (losses) on cash flow hedges | 0 | 0 | ||
Ending balance - Accumulated other comprehensive loss, net | $ (1) | $ (1) |
Segment Information (Details)
Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | |||
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016 | |
Segment Reporting Information [Line Items] | |||||
Revenues | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 | |
Sales revenue from energy operations | 3,598 | 3,280 | 7,179 | 6,830 | |
Real estate | 956 | 841 | 1,541 | 1,332 | |
Depreciation and amortization - energy operations | (660) | (640) | (1,270) | (1,259) | |
Depreciation and amortization | 670 | 648 | 1,292 | 1,274 | |
Operating income | 1,049 | 854 | 2,020 | 1,807 | |
Interest expense | 457 | 468 | 915 | 941 | |
Interest Costs Capitalized Adjustment | 10 | 103 | 20 | 114 | |
Allowance for equity funds | 18 | 115 | 35 | 130 | |
Interest and dividend income | 27 | 27 | 53 | 54 | |
Other, net | (3) | 1 | 22 | 11 | |
Income before income tax expense and equity income | 644 | 632 | 1,235 | 1,175 | |
Assets | 87,809 | 87,809 | $ 85,440 | ||
PacifiCorp [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 1,245 | 1,233 | 2,526 | 2,485 | |
Depreciation and amortization - energy operations | (202) | (199) | (398) | (396) | |
Operating income | 338 | 339 | 683 | 663 | |
Interest expense | 95 | 96 | 190 | 191 | |
Assets | 23,626 | 23,626 | 23,563 | ||
MidAmerican Funding [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 659 | 585 | 1,355 | 1,211 | |
Depreciation and amortization - energy operations | (141) | (110) | (258) | (220) | |
Operating income | 136 | 140 | 243 | 240 | |
Interest expense | 59 | 55 | 118 | 109 | |
Assets | 18,261 | 18,261 | 17,571 | ||
NV Energy, Inc. [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 753 | 707 | 1,337 | 1,322 | |
Depreciation and amortization - energy operations | (106) | (105) | (210) | (209) | |
Operating income | 191 | 173 | 289 | 262 | |
Interest expense | 58 | 63 | 116 | 130 | |
Assets | 14,188 | 14,188 | 14,320 | ||
Northern Powergrid [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 219 | 249 | 464 | 528 | |
Depreciation and amortization - energy operations | (52) | (50) | (101) | (100) | |
Operating income | 94 | 125 | 227 | 283 | |
Interest expense | 33 | 36 | 64 | 72 | |
Assets | 6,940 | 6,940 | 6,433 | ||
BHE Pipeline Group [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 192 | 188 | 507 | 503 | |
Depreciation and amortization - energy operations | (43) | (54) | (73) | (107) | |
Operating income | 55 | 60 | 263 | 252 | |
Interest expense | 10 | 13 | 22 | 26 | |
Assets | 4,900 | 4,900 | 5,144 | ||
BHE Transmission [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 158 | (18) | 324 | 140 | |
Depreciation and amortization - energy operations | (53) | (66) | (107) | (116) | |
Operating income | 73 | (122) | 150 | (46) | |
Interest expense | 39 | 38 | 80 | 74 | |
Assets | 8,794 | 8,794 | 8,378 | ||
BHE Renewables [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 220 | 170 | 364 | 309 | |
Depreciation and amortization - energy operations | (63) | (56) | (124) | (112) | |
Operating income | 84 | 52 | 99 | 76 | |
Interest expense | 52 | 48 | 102 | 97 | |
Assets | 7,643 | 7,643 | 7,010 | ||
HomeServices [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Real estate | 956 | 841 | 1,541 | 1,332 | |
Depreciation and amortization | 10 | 9 | 22 | 15 | |
Operating income | 110 | 93 | 112 | 92 | |
Interest expense | 1 | 0 | 2 | 1 | |
Assets | 2,061 | 2,061 | 1,776 | ||
BHE And Other [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Sales revenue from energy operations | 152 | 166 | 302 | 332 | |
Depreciation and amortization - energy operations | 0 | 1 | 1 | 1 | |
Operating income | (32) | (6) | (46) | (15) | |
Interest expense | 110 | 119 | 221 | 241 | |
Assets | 1,396 | 1,396 | $ 1,245 | ||
UNITED STATES | |||||
Segment Reporting Information [Line Items] | |||||
Revenues | 4,177 | 3,889 | 7,924 | 7,488 | |
Income before income tax expense and equity income | 529 | 498 | 952 | 856 | |
UNITED KINGDOM | |||||
Segment Reporting Information [Line Items] | |||||
Revenues | 219 | 249 | 464 | 528 | |
Income before income tax expense and equity income | 62 | 91 | 164 | 210 | |
CANADA | |||||
Segment Reporting Information [Line Items] | |||||
Revenues | 158 | (17) | 324 | 143 | |
Income before income tax expense and equity income | 38 | 28 | 80 | 71 | |
The Philippines and other [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Revenues | 0 | 0 | 8 | 3 | |
Income before income tax expense and equity income | $ 15 | $ 15 | $ 39 | $ 38 |
Segment Information - Goodwill
Segment Information - Goodwill (Details) $ in Millions | 6 Months Ended |
Jun. 30, 2017USD ($) | |
Goodwill [Roll Forward] | |
Beginning balance | $ 9,010 |
Acquisitions | 106 |
Foreign currency translation | 90 |
Other | (2) |
Ending balance | 9,204 |
PacifiCorp [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 1,129 |
Acquisitions | 0 |
Foreign currency translation | 0 |
Other | 0 |
Ending balance | 1,129 |
MidAmerican Funding [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 2,102 |
Acquisitions | 0 |
Foreign currency translation | 0 |
Other | 0 |
Ending balance | 2,102 |
NV Energy, Inc. [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 2,369 |
Acquisitions | 0 |
Foreign currency translation | 0 |
Other | 0 |
Ending balance | 2,369 |
Northern Powergrid [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 930 |
Acquisitions | 0 |
Foreign currency translation | 36 |
Other | 0 |
Ending balance | 966 |
BHE Pipeline Group [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 75 |
Acquisitions | 0 |
Foreign currency translation | 0 |
Other | (2) |
Ending balance | 73 |
BHE Transmission [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 1,470 |
Acquisitions | 0 |
Foreign currency translation | 54 |
Other | 0 |
Ending balance | 1,524 |
BHE Renewables [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 95 |
Acquisitions | 0 |
Foreign currency translation | 0 |
Other | 0 |
Ending balance | 95 |
HomeServices [Member] | |
Goodwill [Roll Forward] | |
Beginning balance | 840 |
Acquisitions | 106 |
Foreign currency translation | 0 |
Other | 0 |
Ending balance | $ 946 |
Segment Information Segment Inf
Segment Information Segment Information - MEC (Details) $ in Millions | 3 Months Ended | 6 Months Ended | |||
Jun. 30, 2017USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2017USD ($)OperatingSegmentsReportableSegments | Jun. 30, 2016USD ($) | Dec. 31, 2016USD ($) | |
Segment Reporting Information [Line Items] | |||||
Number of reportable segments | OperatingSegments | 8 | ||||
Revenues | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 | |
Operating income | 1,049 | 854 | 2,020 | 1,807 | |
Assets | 87,809 | $ 87,809 | $ 85,440 | ||
MidAmerican Energy Company [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Number of reportable segments | ReportableSegments | 2 | ||||
Electric Domestic Regulated Revenue | 537 | 481 | $ 970 | 880 | |
Revenues | 658 | 584 | 1,353 | 1,209 | |
Utilities Operating Expense, Depreciation and Amortization | 141 | 110 | 258 | 220 | |
Operating income | 135 | 139 | 242 | 239 | |
Assets | 16,141 | 16,141 | 15,459 | ||
MidAmerican Energy Company [Member] | Regulated Electric [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Electric Domestic Regulated Revenue | 537 | 481 | 970 | 880 | |
Utilities Operating Expense, Depreciation and Amortization | 130 | 100 | 237 | 199 | |
Operating income | 128 | 135 | 195 | 192 | |
Assets | 14,871 | 14,871 | 14,113 | ||
MidAmerican Energy Company [Member] | Regulated Gas [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Gas Domestic Regulated Revenue | 120 | 102 | 382 | 328 | |
Utilities Operating Expense, Depreciation and Amortization | 11 | 10 | 21 | 21 | |
Operating income | 7 | 4 | 47 | 47 | |
Assets | 1,269 | 1,269 | 1,345 | ||
MidAmerican Energy Company [Member] | Corporate and Other [Member] | |||||
Segment Reporting Information [Line Items] | |||||
Other Revenue, Net | 1 | $ 1 | 1 | $ 1 | |
Assets | $ 1 | $ 1 | $ 1 |
Segment Information Segment 129
Segment Information Segment Information - MidAmerican Funding (Details) $ in Millions | 3 Months Ended | 6 Months Ended | ||||
Jun. 30, 2017USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2017USD ($)OperatingSegmentsReportableSegments | Jun. 30, 2016USD ($) | Dec. 31, 2016USD ($) | ||
Segment Reporting Information [Line Items] | ||||||
Number of reportable segments | OperatingSegments | 8 | |||||
Revenues | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 | ||
Operating income | 1,049 | 854 | 2,020 | 1,807 | ||
Assets | 87,809 | $ 87,809 | $ 85,440 | |||
MidAmerican Funding, LLC and Subsidiaries [Domain] | ||||||
Segment Reporting Information [Line Items] | ||||||
Number of reportable segments | ReportableSegments | 2 | |||||
Electric Domestic Regulated Revenue | 537 | 481 | $ 970 | 880 | ||
Revenues | 659 | 585 | 1,355 | 1,211 | ||
Utilities Operating Expense, Depreciation and Amortization | 141 | 110 | 258 | 220 | ||
Operating income | 136 | 140 | 243 | 240 | ||
Assets | [1] | 17,433 | 17,433 | 16,747 | ||
MidAmerican Funding, LLC and Subsidiaries [Domain] | Regulated Electric [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Electric Domestic Regulated Revenue | 537 | 481 | 970 | 880 | ||
Utilities Operating Expense, Depreciation and Amortization | 130 | 100 | 237 | 199 | ||
Operating income | 128 | 135 | 195 | 192 | ||
Assets | [1] | 16,062 | 16,062 | 15,304 | ||
MidAmerican Funding, LLC and Subsidiaries [Domain] | Regulated Gas [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Gas Domestic Regulated Revenue | 120 | 102 | 382 | 328 | ||
Utilities Operating Expense, Depreciation and Amortization | 11 | 10 | 21 | 21 | ||
Operating income | 7 | 4 | 47 | 47 | ||
Assets | [1] | 1,348 | 1,348 | 1,424 | ||
MidAmerican Funding, LLC and Subsidiaries [Domain] | Corporate and Other [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Other Revenue, Net | 2 | 2 | 3 | 3 | ||
Operating income | 1 | $ 1 | 1 | $ 1 | ||
Assets | [1] | $ 23 | $ 23 | $ 19 | ||
[1] | (1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments. |
Segment Information Segment 130
Segment Information Segment Information - SPPC (Details) $ in Millions | 3 Months Ended | 6 Months Ended | ||||
Jun. 30, 2017USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2017USD ($)OperatingSegmentsTheNumberOfReportableSegments | Jun. 30, 2016USD ($) | Dec. 31, 2016USD ($) | ||
Segment Reporting Information [Line Items] | ||||||
Number of reportable segments | OperatingSegments | 8 | |||||
Revenues | $ 4,554 | $ 4,121 | $ 8,720 | $ 8,162 | ||
Cost of sales | 1,049 | 970 | 2,168 | 2,065 | ||
Operating income | 1,049 | 854 | 2,020 | 1,807 | ||
Interest expense | 457 | 468 | 915 | 941 | ||
Assets | 87,809 | $ 87,809 | $ 85,440 | |||
Sierra Pacific Power Company [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Number of reportable segments | TheNumberOfReportableSegments | 2 | |||||
Electric Domestic Regulated Revenue | 160 | 162 | $ 319 | 332 | ||
Gas Domestic Regulated Revenue | 17 | 19 | 51 | 66 | ||
Revenues | 177 | 181 | 370 | 398 | ||
Cost of sales | 61 | 65 | 117 | 135 | ||
Cost of Purchased Oil and Gas | 6 | 7 | 22 | 37 | ||
Cost of Sales | 67 | 72 | 139 | 172 | ||
Gross Margin | 110 | 109 | 231 | 226 | ||
Utilities Operating Expense, Maintenance and Operations | 40 | 45 | 81 | 86 | ||
Utilities Operating Expense, Depreciation and Amortization | 28 | 29 | 56 | 58 | ||
Operating income | 36 | 28 | 82 | 69 | ||
Interest expense | 11 | 14 | 22 | 30 | ||
Assets | 3,434 | 3,434 | 3,493 | |||
Sierra Pacific Power Company [Member] | Electric Operations [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Electric Domestic Regulated Revenue | 160 | 162 | 319 | 332 | ||
Cost of sales | 61 | 65 | 117 | 135 | ||
Gross Margin | 99 | 97 | 202 | 197 | ||
Utilities Operating Expense, Maintenance and Operations | 36 | 40 | 72 | 76 | ||
Utilities Operating Expense, Depreciation and Amortization | 24 | 25 | 49 | 50 | ||
Operating income | 34 | 26 | 70 | 59 | ||
Interest expense | 10 | 13 | 20 | 27 | ||
Assets | 3,117 | 3,117 | 3,119 | |||
Sierra Pacific Power Company [Member] | Natural Gas Operations [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Gas Domestic Regulated Revenue | 17 | 19 | 51 | 66 | ||
Cost of Purchased Oil and Gas | 6 | 7 | 22 | 37 | ||
Gross Margin | 11 | 12 | 29 | 29 | ||
Utilities Operating Expense, Maintenance and Operations | 4 | 5 | 9 | 10 | ||
Utilities Operating Expense, Depreciation and Amortization | 4 | 4 | 7 | 8 | ||
Operating income | 2 | 2 | 12 | 10 | ||
Interest expense | 1 | $ 1 | 2 | $ 3 | ||
Assets | 306 | 306 | 314 | |||
Sierra Pacific Power Company [Member] | Regulated common assets [Member] | ||||||
Segment Reporting Information [Line Items] | ||||||
Assets | [1] | $ 11 | $ 11 | $ 60 | ||
[1] | (1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments. |
Related Party Transactions R131
Related Party Transactions Related Party Transactions PacifiCorp (Details) - USD ($) $ in Millions | 6 Months Ended | |
Jun. 30, 2017 | Jun. 30, 2016 | |
Related Party Transaction [Line Items] | ||
Related party transaction, cash received for income taxes, net | $ 658 | |
PacifiCorp [Member] | BHE [Member] | ||
Related Party Transaction [Line Items] | ||
Related party transaction, cash received for income taxes, net | $ 3 | $ 65 |