UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
FORM 10-Q
(Mark One) 
[X]
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
 For the Quarterly Period Ended June 30, 20162017
OR
[   ]
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
 For the transition period from _____ to _____

Commission file number 1-5153
mro_logoa33.jpg
Marathon Oil Corporation
(Exact name of registrant as specified in its charter)
Delaware 25-0996816
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
5555 San Felipe Street, Houston, TX  77056-2723
(Address of principal executive offices)

(713) 629-6600
(Registrant’s telephone number, including area code)
 
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.       Yes Rþ No £o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes Rþ No £o
 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company.  See the definitions of “large accelerated filer,” “accelerated filer”filer,” “smaller reporting company,” and “smaller reporting“emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer þ
Accelerated filero
Non-accelerated filer o        (Do
(Do not check if a smaller reporting company)
Smaller reporting companyo   
Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 
Yes o No þ
 
There were 847,258,512849,834,915 shares of Marathon Oil Corporation common stock outstanding as of July 31, 2016.2017.


MARATHON OIL CORPORATION
 
Unless the context otherwise indicates, references to “Marathon Oil,” “we,” “our,” or “us” in this Form 10-Q are references to Marathon Oil Corporation, including its wholly-ownedwholly owned and majority-owned subsidiaries, and its ownership interests in equity method investees (corporate entities, partnerships, limited liability companies and other ventures over which Marathon Oil exerts significant influence by virtue of its ownership interest).
For certain industry specific terms used in this Form 10-Q, please see "Definitions"“Definitions” in our 20152016 Annual Report on Form 10-K.

 Table of Contents 
  Page
 
 
 
 
 
 
 
 
 
 



Part I - Financial Information
Item 1. Financial Statements

MARATHON OIL CORPORATION
Consolidated Statements of Income (Unaudited)
Three Months Ended Six Months EndedThree Months Ended Six Months Ended
June 30, June 30,June 30, June 30,
(In millions, except per share data)2016 2015 2016 20152017 2016 2017 2016
Revenues and other income:              
Sales and other operating revenues, including related party$870
 $1,307
 $1,584
 $2,587
$958
 $685
 $1,912
 $1,251
Marketing revenues89
 183
 147
 387
35
 76
 69
 122
Income from equity method investments37
 26
 51
 62
51
 37
 120
 51
Net gain (loss) on disposal of assets294
 
 234
 1
6
 294
 7
 234
Other income12
 15
 16
 26
9
 11
 23
 15
Total revenues and other income1,302
 1,531
 2,032
 3,063
1,059
 1,103
 2,131
 1,673
Costs and expenses: 
  
    
 
  
    
Production350
 450
 678
 894
176
 185
 327
 372
Marketing, including purchases from related parties88
 182
 146
 387
38
 75
 72
 121
Other operating95
 81
 204
 188
111
 87
 200
 190
Exploration189
 111
 213
 201
30
 182
 58
 206
Depreciation, depletion and amortization561
 751
 1,170
 1,572
592
 512
 1,148
 1,061
Impairments
 44
 1
 44

 
 4
 1
Taxes other than income39
 78
 87
 145
45
 35
 84
 78
General and administrative132
 168
 283
 339
93
 131
 202
 282
Total costs and expenses1,454
 1,865
 2,782
 3,770
1,085
 1,207
 2,095
 2,311
Income (loss) from operations(152) (334) (750) (707)(26) (104) 36
 (638)
Net interest and other(86) (58) (171) (105)(86) (88) (164) (167)
Income (loss) before income taxes(238) (392) (921) (812)
Income (loss) from continuing operations before income taxes(112) (192) (128) (805)
Provision (benefit) for income taxes(68) (6) (344) (150)41
 (54) 75
 (307)
Income (loss) from continuing operations(153) (138) (203) (498)
Income (loss) from discontinued operations14
 (32) (4,893) (79)
Net income (loss)$(170) $(386) $(577) $(662)$(139) $(170) $(5,096) $(577)
Net income (loss) per share: 
  
  
  
Basic$(0.20) $(0.57) $(0.73) $(0.98)
Diluted$(0.20) $(0.57) $(0.73) $(0.98)
Per basic share: 
  
  
  
Income (loss) from continuing operations$(0.18) $(0.16) $(0.24) $(0.63)
Income (loss) from discontinued operations$0.02
 $(0.04) $(5.76) $(0.10)
Net income (loss)$(0.16) $(0.20) $(6.00) $(0.73)
Per diluted share:       
Income (loss) from continuing operations$(0.18) $(0.16) $(0.24) $(0.63)
Income (loss) from discontinued operations$0.02
 $(0.04) $(5.76) $(0.10)
Net income (loss)$(0.16) $(0.20) $(6.00) $(0.73)
Dividends per share$0.05
 $0.21
 $0.10
 $0.42
$0.05
 $0.05
 $0.10
 $0.10
Weighted average common shares outstanding: 
  
  
  
 
  
  
  
Basic848
 677
 790
 676
850
 848
 850
 790
Diluted848
 677
 790
 676
850
 848
 850
 790
 The accompanying notes are an integral part of these consolidated financial statements.


MARATHON OIL CORPORATION
Consolidated Statements of Comprehensive Income (Unaudited)
Three Months Ended Six Months EndedThree Months Ended Six Months Ended
June 30, June 30,June 30, June 30,
(In millions)2016 2015 2016 20152017 2016 2017 2016
Net income (loss)$(170) $(386) $(577) $(662)$(139) $(170) $(5,096) $(577)
Other comprehensive income (loss) 
  
  
  
   
  
  
Postretirement and postemployment plans 
  
  
  
 
  
  
  
Change in actuarial loss and other19
 86
 (5) 162
8
 19
 12
 (5)
Income tax provision (benefit)(7) (30) 2
 (57)
 (7) 
 2
Postretirement and postemployment plans, net of tax12
 56
 (3) 105
8
 12
 12
 (3)
Other, net of tax(2) 
 (2) 
Derivative hedges       
Net unrecognized gain (loss)(14) 
 (13) 
Income tax provision
 
 
 
Derivative hedges, net of tax(14) 
 (13) 
Foreign currency hedges 
  
  
  
Net recognized gain reclassified to discontinued operations
 
 34
 
Income tax benefit (provision)
 
 (4) 
Foreign currency hedges, net of tax
 
 30
 
Other, Net of Tax
 (2) 
 (2)
       
Other comprehensive income (loss)10
 56
 (5) 105
(6) 10
 29
 (5)
Comprehensive income (loss)$(160)
$(330)
$(582)
$(557)$(145)
$(160)
$(5,067)
$(582)
 The accompanying notes are an integral part of these consolidated financial statements.



MARATHON OIL CORPORATION
Consolidated Balance Sheets (Unaudited)
June 30, December 31,June 30, December 31,
(In millions, except per share data)2016 20152017 2016
Assets      
Current assets:      
Cash and cash equivalents$2,584
 $1,221
$2,614
 $2,488
Receivables, less reserve of $4 and $4822
 912
Receivables, less reserve of $5 and $6767
 748
Notes receivable742
 
Inventories272
 313
140
 136
Other current assets76
 144
160
 66
Current assets held for sale1
 227
Total current assets3,754
 2,590
4,424
 3,665
Equity method investments944
 1,003
821
 931
Property, plant and equipment, less accumulated depreciation, 
  
depletion and amortization of $21,659 and $23,26025,657
 27,061
Property, plant and equipment, less accumulated depreciation,
depletion and amortization of $21,238 and $20,255
18,337
 16,727
Goodwill115
 115
115
 115
Other noncurrent assets2,057
 1,542
543
 558
Noncurrent assets held for sale1
 9,098
Total assets$32,527
 $32,311
$24,241
 $31,094
Liabilities 
  
 
  
Current liabilities: 
  
 
  
Accounts payable$953
 $1,313
$1,158
 $967
Payroll and benefits payable114
 133
92
 129
Accrued taxes85
 132
78
 94
Other current liabilities229
 150
206
 243
Long-term debt due within one year1
 1
548
 686
Current liabilities held for sale
 121
Total current liabilities1,382
 1,729
2,082
 2,240
Long-term debt7,280
 7,276
6,715
 6,581
Deferred tax liabilities2,392
 2,441
839
 769
Defined benefit postretirement plan obligations409
 403
340
 345
Asset retirement obligations1,597
 1,601
1,642
 1,602
Deferred credits and other liabilities314
 308
211
 225
Noncurrent liabilities held for sale7
 1,791
Total liabilities13,374
 13,758
11,836
 13,553
Commitments and contingencies

 



 

Stockholders’ Equity 
  
 
  
Preferred stock – no shares issued or outstanding (no par value,   
26 million shares authorized)
 
Preferred stock – no shares issued or outstanding (no par value,
26 million shares authorized)

 
Common stock: 
  
 
  
Issued – 937 million shares and 770 million shares (par value $1 per share,   
1.1 billion shares authorized)937
 770
Securities exchangeable into common stock – no shares issued or 
  
outstanding (no par value, 29 million shares authorized)
 
Held in treasury, at cost – 89 million and 93 million shares(3,397) (3,554)
Issued – 937 million shares and 937 million shares (par value $1 per share,
1.1 billion shares authorized)
937
 937
Securities exchangeable into common stock – no shares issued or
outstanding (no par value, 29 million shares authorized)

 
Held in treasury, at cost – 87 million and 90 million shares(3,318) (3,431)
Additional paid-in capital7,433
 6,498
7,349
 7,446
Retained earnings14,320
 14,974
7,491
 12,672
Accumulated other comprehensive loss(140) (135)(54) (83)
Total stockholders' equity19,153
 18,553
12,405
 17,541
Total liabilities and stockholders' equity$32,527
 $32,311
$24,241
 $31,094
 The accompanying notes are an integral part of these consolidated financial statements.


MARATHON OIL CORPORATION
Consolidated Statements of Cash Flows (Unaudited)
Six Months EndedSix Months Ended
June 30,June 30,
(In millions)2016 20152017 2016
Increase (decrease) in cash and cash equivalents   
Operating activities: 
  
 
  
Net income (loss)$(577) $(662)$(5,096) $(577)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: 
  
 
  
Discontinued operations4,893
 79
Depreciation, depletion and amortization1,148
 1,061
Exploratory dry well costs and unproved property impairments45
 159
Net (gain) loss on disposal of assets(7) (234)
Deferred income taxes(392) (185)38
 (352)
Depreciation, depletion and amortization1,170
 1,572
Impairments1
 44
Net (gain) loss on derivative instruments88
 17
(140) 90
Net cash received (paid) in settlement of derivative instruments46
 4
3
 44
Pension and other postretirement benefits, net14
 14
Exploratory dry well costs and unproved property impairments166
 148
Net (gain) loss on disposal of assets(234) (1)
Stock based compensation26
 26
Equity method investments, net22
 37
61
 22
Changes in:   
   
Current receivables88
 534
(15) 92
Inventories30
 21
(5) 25
Current accounts payable and accrued liabilities(211) (770)(41) (207)
All other operating, net41
 (56)13
 39
Net cash provided by operating activities252
 717
Net cash provided by operating activities from continuing operations923
 267
Investing activities: 
  
 
  
Additions to property, plant and equipment(753) (2,320)(775) (728)
Disposal of assets758
 2
Investments - return of capital37
 31
Purchases of short-term investments
 (925)
Deposit for acquisition(89) 
Acquisitions, net of cash acquired(1,828) 
Deposits for acquisitions
 (89)
Disposal of assets, net of cash transferred to buyer1,726
 758
Equity method investments - return of capital49
 37
All other investing, net2
 (1)(5) 2
Net cash used in investing activities(45) (3,213)
Net cash used in investing activities from continuing operations(833) (20)
Financing activities: 
  
 
  
Borrowings
 1,996
Debt issuance costs
 (19)
Debt repayments
 (34)(1) 
Common stock issuance1,236
 

 1,236
Purchases of common stock(10) (4)
Dividends paid(77) (285)(85) (77)
All other financing, net
 11
Net cash provided by (used in) financing activities1,159
 1,669
(96) 1,155
Cash Flow from Discontinued Operations:   
Operating activities141
 (11)
Investing activities(13) (25)
Changes in cash included in current assets held for sale2
 36
Net increase in cash and cash equivalents of discontinued operations130
 
Effect of exchange rate on cash and cash equivalents(3) 1
2
 (3)
Net increase (decrease) in cash and cash equivalents1,363
 (826)126
 1,399
Cash and cash equivalents at beginning of period1,221
 2,398
2,488
 1,119
Cash and cash equivalents at end of period$2,584
 $1,572
$2,614
 $2,518
The accompanying notes are an integral part of these consolidated financial statements.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)




1.    Basis of Presentation
These consolidated financial statements are unaudited; however, in the opinion of management, these statements reflect all adjustments necessary for a fair statement of the results for the periods reported.  All such adjustments are of a normal recurring nature unless disclosed otherwise.  These consolidated financial statements, including notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by U.S. GAAP for complete financial statements.
A reclassification between operating cash flow categories was made to the prior year's financial information to present it on a basis comparable with the current year's presentation with no impact on net cash provided by operating activities.
These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 20152016 Annual Report on Form 10-K.  The results of operations for the second quarter and first six months of 20162017 are not necessarily indicative of the results to be expected for the full year.
As a result of the announcement to divest our Canadian business in the first quarter of 2017, we have reflected this business as discontinued operations in all periods presented. Assets and liabilities are presented as held for sale in the historical periods presented in the consolidated balance sheets. The disclosures in this report related to the results of operations and cash flows are presented on the basis of continuing operations, unless otherwise noted. This transaction closed in the second quarter of 2017. The characteristics and composition of our North America E&P reporting segment remained unchanged and there was no effect on previously reported segment information. As all our remaining properties within the segment are located within the United States, we concluded that our North America E&P segment would be renamed United States E&P segment, effective June 30, 2017. During the quarter no changes occurred to our International E&P segment. See Note 6 for discussion of the divestiture in further detail and Note 7 for further information on our reportable segments.
During the first quarter of 2017, we adopted the accounting standards update issued by the FASB in March 2016 pertaining to share-based payment transactions. See Note 2 for additional discussion. As a result of this adoption, all cash payments for withheld shares made to taxing authorities on the employees' behalf will be presented within the financing activities section instead of the operating activities section of the statement of cash flows. We have elected the retrospective method for adoption of this update and the change in the statement of cash flows is not material for six months ended June 30, 2016. Excess tax benefits will be classified as an operating activity within the statement of cash flows on a prospective basis; as such, prior periods were not adjusted. See Note 2 for additional discussion.
2.   Accounting Standards
Not Yet Adopted
In March 2017, the FASB issued a new accounting standards update that will change how employers that sponsor defined pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Employers will present the service cost component of net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. This standard is effective for us in the first quarter of 2018 and shall be applied on a retrospective basis. Early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact it may have on our results of operations, financial position, or cash flows.
In February 2017, the FASB issued a new accounting standards update that clarifies the accounting for the sale or transfer of nonfinancial assets and in substance nonfinancial assets to noncustomers, including partial sales. The standard also clarifies that the derecognition of all businesses (except those related to conveyances of oil and gas mineral rights or contracts with customers) should be accounted for in accordance with the derecognition and deconsolidation guidance in Subtopic 810-10. This standard is effective for us in the first quarter of 2018 and will be applied using the modified retrospective approach. Early adoption is permitted. We plan to adopt this new standard in the first quarter of 2018 concurrently with the new revenue recognition standard. We are evaluating the provisions of this accounting standards update and assessing the impact it may have on our consolidated results of operations, financial position or cash flows.
In January 2017, the FASB issued a new accounting standards update that changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities constitutes a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the set of transferred assets and activities would not represent a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in the new revenue guidance. This standard is effective for us in the first quarter of 2018 and shall be applied on a prospective basis. Early adoption is permitted for certain transactions as described in the guidance. Since we will adopt the standard on a prospective basis, we do not expect an impact on our consolidated results of operations, financial position or cash flows for prior periods.
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



In January 2017, the FASB issued a new accounting standards update that eliminates the requirement to calculate the implied fair value of the goodwill (i.e., Step 2 of goodwill impairment test under the current guidance) to measure a goodwill impairment charge. The standard will require entities to record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on Step 1 under the current guidance). This standard is effective for us in the first quarter of 2020 and shall be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Since we will adopt the standard on a prospective basis, we do not expect an impact on our consolidated results of operations, financial position or cash flows for prior periods.
In November 2016, the FASB issued a new accounting standards update that requires entities to show the changes in the total of cash, cash equivalents and restricted cash in the statement of cash flows. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash in the statement of cash flows. When cash, cash equivalents, and restricted cash are presented in more than one line item on the balance sheet, the standard requires a reconciliation of the totals in the statement of cash flows to the related captions in the balance sheet. This reconciliation can be presented either on the face of the statement of cash flows or in the notes to the financial statements. This standard is effective for us in the first quarter of 2018 and shall be applied on a retrospective basis. Early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact it may have on our consolidated statements of cash flows and related disclosures.
In August 2016, the FASB issued a new accounting standards update which seeks to reduce the existing diversity in practice in how certain transactions are classified in the statement of cash flows. This standard is effective for us in the first quarter of 2018 and shall be applied on a retrospective basis. Early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated statements of cash flows and related disclosures.
In June 2016, the FASB issued a new accounting standards update that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standard requires the use of a forward-looking "expected loss"“expected loss” model as opposed to the current "incurred loss"“incurred loss” model. This standard is effective for us in the first quarter of 2020 and will be adopted on a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the adoption period. Early adoption is permitted starting January 2019. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated results of operations, financial position or cash flows.
In March 2016, the FASB issued a new accounting standards update that changes several aspects of accounting for share-based payment transactions, including a requirement to recognize all excess tax benefits and tax deficiencies as income tax expense or benefit in the income statement, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This standard is effective for us in the first quarter of 2017 and varying transition methods (modified retrospective, retrospective or prospective) should be applied to different provisions of the standard. Early adoption is permitted. We continue to evaluate the provisions of this accounting standards update but do not believe it will have a material effect on our consolidated results of operations, financial position or cash flows.
In February 2016, the FASB issued a new lease accounting standard, which requires lessees to recognize most leases, including operating leases, on the balance sheet as a right of use asset and lease liability. Short-term leases can continue being accounted for off balance sheet based on a policy election. This standard does not apply to leases to explore for or use minerals, oil, natural gas and similar non-regenerative resources, including the intangible right to explore for those natural resources and rights to use the land in which those natural resources are contained. This standard is effective for us in the first quarter of 2019 and should be applied using a modified retrospective approach at the beginning of the earliest period presented in the financial statements. Early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact it willmay have on our consolidated results of operations, financial position or cash flows.
In January 2016, the FASB issued an accounting standards update that addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This standard is effective for us in the first quarter of 2018. Early adoption is allowed for certain provisions. We do not expect the adoption of this standard to have a significant impact on our consolidated results of operations, financial position or cash flows.
In July 2015, the FASB issued an update that requires an entity to measure inventory at the lower of cost and net realizable value. This excludes inventory measured using LIFO or the retail inventory method. This standard is effective for us in the first quarter of 2017 and will be applied prospectively. Early adoption is permitted. We do not expect the adoption of this standard to have a significant impact on our consolidated results of operations, financial position or cash flows.
In August 2014, the FASB issued an update that requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards.  This standard is effective for us for the annual period ending after December 15, 2016 and for annual periods and interim periods thereafter. Early adoption is permitted. We do not expect the adoption of this standard to have a significant impact on our consolidated results of operations, financial position or cash flows.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


In May 2014 and August 2015, the FASB issued an update that supersedes the existing revenue recognition requirements. This standard includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. Among other things, the standard requires enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. This standard is effective for us in the first quarter of 2018 and shouldshall be applied retrospectively to each prior reporting period presented (“full retrospective method”) or with the cumulative effect of initially applying the update recognized at the date of initial application.application (“modified retrospective method”). While early adoption is permitted, we plan to adopt this new standard in the first quarter of 2018. We continue2018 using the modified retrospective method. Based on our assessment to evaluate certain provisionsdate, we do not expect the adoption of this accounting standards update and are assessing the impact it willASU to have on our consolidated results of operations, financial position or cash flows.
Recently Adopted
In May 2015, the FASB issued an update that removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The amendment also removes certain disclosure requirements regarding all investments that are eligible to be measured using the net asset value per share practical expedient and only requires certain disclosures on those investments for which an entity elects to use the net asset value per share expedient. This standard is effective for us in the first quarter of 2016 and was applied on a retrospective basis. This standard only modifies disclosure requirements; as such, there was nomaterial impact on our consolidated results of operations, financial position or cash flows. However, we do expect to change our presentation of future marketing revenues and marketing expenses from the current gross presentation to a net presentation for a portion of our international contracts. For the six months ended June 30, 2017, we estimate this impact to be
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



approximately $50 million in marketing revenue and expenses in our consolidated results of operations. We continue to evaluate the disclosure requirements, are developing accounting policies, and assessing changes to the relevant business processes and the control activities as a result of this standard.
Recently Adopted
In February 2015,March 2016, the FASB issued an amendmenta new accounting standards update that changes several aspects of accounting for share-based payment transactions, including a requirement to recognize all excess tax benefits and tax deficiencies as income tax expense or benefit in the guidance for determining whether an entity is a variable interest entity ("VIE"). The standard does not addincome statement, classification of awards as either equity or remove anyliabilities, and classification on the statement of the five characteristics that determine whether an entity is a VIE. However, it does change the manner in which a reporting entity assesses one of the characteristics. In particular, when decision-making over the entity’s most significant activities has been outsourced, the standard changes how a reporting entity assesses if the equity holders at risk lack decision making rights.cash flows. This standard iswas effective for us in the first quarter of 2016.2017. The new standard requires a company to make a policy election on how it accounts for forfeitures; we elected to continue estimating forfeitures using the same methodology practiced prior to adoption of this standard. See Note 1 for the impact this standard has on the presentation of our financial statements.
In July 2015, the FASB issued an update that requires an entity to measure inventory at the lower of cost or net realizable value. This excludes inventory measured using LIFO or the retail inventory method. This standard was effective for us in the first quarter of 2017, and was applied prospectively. Adoption of this standard did not have a significant impact on our consolidated results of operations, financial position or cash flows.
3.   Variable Interest Entity
The ownersDuring the second quarter of 2017 we closed on the sale of our Canadian business, which included our 20% undivided interest in the Athabasca Oil Sands Project in which we hold a 20% undivided interest,(AOSP). The owners of the AOSP contracted with a wholly owned subsidiary of a publicly traded Canadian limited partnership (“Corridor Pipeline”) to provide materials transportation capabilities among the Muskeg River and Jackpine mines, the Scotford upgrader and markets in Edmonton, Alberta, Canada.  Costs underThis contract was transferred to the purchaser of our Canadian business upon closing of the sale in the second quarter of 2017. Historically, this contract are accrued and recorded on a monthly basis, with current liabilities of $2 million recorded at June 30, 2016 and December 31, 2015.  This contract qualifiesqualified as a variable interest contractual arrangement, and the Corridor Pipeline qualifiesqualified as a VIE.  We hold aPrior to the closing of the sale of our Canadian business, we held this variable interest but arewere not the primary beneficiary because our shipments arewere only 20% of the total; therefore, the Corridor Pipeline iswas not consolidated by us. Our maximum exposure to loss as a result of our involvement with this VIE is the amount we expect to pay over the contract term, which was $468 million as of June 30, 2016.  The liability on our books related to this contract at any given time will reflect amounts dueSee Note 6 for the immediately previous month’s activity, which is substantially less than the maximum exposure over the contract term.further discussion regarding dispositions.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


4.Income (Loss) per Common Share
Basic income (loss) per share is based on the weighted average number of common shares outstanding.  Diluted income per share assumes exercise of stock options in all years, provided the effect is not antidilutive. The per share calculations below exclude 12 million stock options for the three and six month periods ended June 30, 2017 and 14 million stock options for the three and six month periods ended June 30, 2016 and 13 million stock options for the three and six month periods ended June 30, 2015 that were antidilutive.
 Three Months Ended June 30, Six Months Ended June 30,
(In millions, except per share data)2016 2015 2016 2015
Net income (loss)$(170) $(386) $(577) $(662)
        
Weighted average common shares outstanding848
 677
 790
 676
Weighted average common shares, diluted848
 677
 790
 676
Net income (loss) per share:       
Basic$(0.20) $(0.57) $(0.73) $(0.98)
Diluted$(0.20) $(0.57) $(0.73) $(0.98)
 Three Months Ended June 30, Six Months Ended June 30,
(In millions, except per share data)2017 2016 2017 2016
Income (loss) from operations$(153) $(138) $(203) $(498)
Income (loss) from discontinued operations14
 (32) (4,893) (79)
Net income (loss)$(139) $(170) $(5,096) $(577)
        
Weighted average common shares outstanding850
 848
 850
 790
Per basic share:       
Income (loss) from continuing operations$(0.18) $(0.16) $(0.24) $(0.63)
Income (loss) from discontinued operations$0.02
 $(0.04) $(5.76) $(0.10)
Net income$(0.16) $(0.20) $(6.00) $(0.73)
Per diluted share:       
Income (loss) from continuing operations$(0.18) $(0.16) $(0.24) $(0.63)
Income (loss) from discontinued operations$0.02
 $(0.04) $(5.76) $(0.10)
Net income$(0.16) $(0.20) $(6.00) $(0.73)
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



5. Acquisitions
2017 - United States E&P
In June 2016,the second quarter of 2017 we executed a purchase agreementclosed on our acquisitions to acquire PayRock Energy Holdings, LLC ("PayRock"), a portfolio companyapproximately 91,000 net acres in the Permian basin, including over 70,000 net acres in the Northern Delaware basin of EnCap Investments, whichNew Mexico. On May 1, 2017 we closed on August 1, 2016our acquisition with BC Operating, Inc. and other entities for $888 million,$1.1 billion in cash, subject to closing adjustments. PayRock haspost-closing adjustments, to acquire approximately 61,00070,000 net surface acres and current production of approximately 9,0005,000 net barrels of oil equivalent per day. On June 1, 2017 we closed on our acquisition with Black Mountain Oil & Gas and other private sellers for approximately $700 million in cash, subject to post-closing adjustments, to acquire approximately 21,000 net surface acres. The purchase price for these acquisitions was paid with cash on hand. We accounted for these transactions as asset acquisitions, with substantially all of the purchase price allocated to unproved property within property, plant and equipment. Although the purchase price allocation has not been finalized, we do not expect to record any material adjustments to the preliminary purchase price allocation.
2016 - United States E&P
On August 1, 2016, we closed on our acquisition of PayRock Energy Holdings, LLC (“PayRock”), a portfolio company of EnCap Investments, including approximately 61,000 net surface acres in the oil window of the Anadarko Basin STACK play in Oklahoma. In the second quarter of 2016 an $89 million deposit was paid into escrow related to the acquisition. The purchase price of $904 million, subject to closing adjustments, was paid with cash on hand. We accounted for this transaction as an asset acquisition, with thea majority of the purchase price allocated to unproved property within property, plant and equipment.
6.Dispositions
2016 -Oil Sands Mining Segment
On May 31, 2017 we closed on the sale of our Canadian business, which includes our 20% non-operated interest in the AOSP to Shell and Canadian Natural Resources Limited (“CNRL”) for $2.5 billion, excluding closing adjustments. Under the terms of the agreement, $1.8 billion was paid to us upon closing and the remaining proceeds will be paid in the first quarter of 2018. At closing we received two notes receivable for the remaining proceeds, each with a face value of $375 million. We initially recorded these notes receivable at fair value and, in subsequent periods, will report them at amortized cost. See Note 13 for fair value measurements. Our notes receivable are with 10084751 Canada Limited (“Canada Limited”), an affiliate of Shell Canada Limited, and CNRL. The Canada Limited note receivable is guaranteed by Shell Canada Limited and the CNRL note receivable is guaranteed by Toronto Dominion Bank. In the first quarter of 2017, we recorded an after-tax non-cash impairment charge of $4.96 billion primarily related to the property, plant and equipment of our Canadian business. As the effective date of the transaction is January 1, 2017, we recorded a loss on sale of $43 million due to second quarter results of operations from our Canadian business that were recorded in our financial statements but transferred to the buyer upon closing.
Our Canadian business is reflected as discontinued operations in the consolidated statements of income and the consolidated statements of cash flows for all periods presented. The following table contains select amounts reported in our consolidated statements of income as discontinued operations:
 Three Months Ended June 30, Six Months Ended June 30,
(In millions) 2017 2016 2017 2016
Total sales and other revenues and other income $173
 $199
 $431
 $359
Net gain (loss) on disposal of assets (43) 
 (43) 
Total revenues and other income 130
 199
 388
 359
Costs and expenses:        
Production expenses 103
 165
 254
 306
Depreciation, depletion and amortization 1
 49
 40
 109
Impairments 
 
 6,636
 
Other 12
 31
 25
 60
Total costs and expenses 116
 245
 6,955
 475
Pretax income (loss) from discontinued operations 14
 (46) (6,567) (116)
Provision (benefit) for income taxes 
 (14) (1,674) (37)
Income (loss) from discontinued operations $14
 $(32) $(4,893) $(79)
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



The following table presents the carrying value of the major categories of assets and liabilities of our Canadian business reported as discontinued operations and assets and liabilities from continuing operations, that are reflected as held for sale on our consolidated balance sheets at June 30, 2017 and December 31, 2016:
  June 30, December 31,
(In millions) 2017 2016
Assets held for sale    
Current assets:    
Cash and cash equivalents $
 $2
Accounts receivables 
 129
Inventories 
 91
Other 
 4
Total current assets held for sale—discontinued operations 
 226
Total current assets held for sale—continuing operations 1
 1
Total current assets held for sale $1
 $227
     
Noncurrent assets:    
Property, plant and equipment, net $
 $8,991
Other 
 106
Total noncurrent assets held for sale—discontinued operations 
 9,097
Total noncurrent assets held for sale—continuing operations 1
 1
Total noncurrent assets held for sale $1
 $9,098
     
Liabilities associated with assets held for sale    
Current liabilities:    
Accounts payable $
 $111
Other 
 10
Total current liabilities held for sale—discontinued operations 
 121
Total current liabilities held for sale—continuing operations 
 
Total current liabilities held for sale $
 $121
     
Noncurrent liabilities:    
Asset retirement obligations $
 $95
Deferred tax liabilities 
 1,669
Other 
 20
Total noncurrent liabilities held for sale—discontinued operations 
 1,784
Total noncurrent liabilities held for sale—continuing operations 7
 7
Total noncurrent liabilities held for sale $7
 $1,791
United States E&P Segment
As disclosed above, we closed on the sale of our Canadian business in May of 2017. This sale included interests in our exploration stage in-situ leases which were included within our historically named North America E&P SegmentSegment. See Note 1 for further detail. These interests have been reflected as discontinued operations and are included within the disclosure above.
During the quarter,In April 2016, we announced the sale of our Wyoming upstream and midstream assets forassets. During the second quarter 2016, we received proceeds of $870 million, before closing adjustments, of which approximately $690 million was received in the second quarter.  Aand recorded a pre-tax gain of $266 million with the remaining asset sales closing in November 2016 for proceeds of $155 million, excluding closing adjustments. A pre-tax gain of $38 million was recognized in the secondfourth quarter 2016.  The remaining asset sales are subject
MARATHON OIL CORPORATION
Notes to the receipt of certain tribal consents and are expected to close before year end. These assets are classified as held for sale in the consolidated balance sheet as of June 30, 2016 with total assets of $104 million and total liabilities of $4 million. The proceeds for the remaining asset sales were deposited into an escrow account by the buyer.Consolidated Financial Statements (Unaudited)



In March and April 2016, we entered into separate agreements to sell our 10% working interest in the outside-operated Shenandoah discovery in the Gulf of Mexico, operated natural gas assets in the Piceance basin in Colorado and certain undeveloped acreage in West Texas and New Mexico, for a combined total of approximately $80 million in proceeds, before closing adjustments.proceeds. We closed on certain of the asset sales and recognized a net pre-tax net loss on sale of $48 million for the six months ended June 30, 2016. The remaining asset sales are expected to close by year-end.
2015 - North America E&P Segment
In the third quarter of 2015, we closed on the sale of our East Texas/North Louisiana and Wilburton, Oklahoma natural gas assets for proceeds of approximately $100 million and recorded a pretax loss of $1 million. Duringin the second quarter of 2015, we recorded a non-cash impairment charge2016, with the remaining Piceance basin asset sale expected to close in the second half of $44 million related to these assets as a result of the anticipated sale (see Note 13).
2017.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


7.    Segment Information
  We have threetwo reportable operating segments. EachBoth of these segments isare organized and managed based upon both geographic location and the nature of the products and services it offers.offered.
N.A.U.S. E&P – explores for, produces and markets crude oil and condensate, NGLs and natural gas in North America;the United States
Int'lInt’l E&P – explores for, produces and markets crude oil and condensate, NGLs and natural gas outside of North Americathe United States and produces and markets products manufactured from natural gas, such as LNG and methanol, in Equatorial Guinea (“E.G.; and
Oil Sands Mining (“OSM”) – mines, extracts and transports bitumen from oil sands deposits in Alberta, Canada, and upgrades the bitumen to produce and market synthetic crude oil and vacuum gas oil.
Information regarding assets by segment is not presented because it is not reviewed by the chief operating decision maker (“CODM”).  Segment income (loss) represents income (loss) which excludes certain items not allocated to segments, net of income taxes, attributable to the operating segments. A portion of our corporate and operations support general and administrative costs are not allocated to the operating segments. These unallocated costs primarily consist of employment costs (including pension effects), professional services, facilities and other costs associated with corporate and operations support activities. Additionally, items which affect comparability such as: gains or losses on dispositions, certain impairments, change in tax expense associated with a tax rate change, unrealized gains or losses on commodity derivative instruments, pension settlement losses or other items (as determined by the CODM) are not allocated to operating segments.
As discussed in Note 6, we closed on the sale of our Canadian business, which includes our Oil Sands Mining segment and exploration stage in-situ leases, in the second quarter of 2017. The Canadian business is reflected as discontinued operations and is excluded from segment information in all periods presented. Additionally, we have renamed our North America E&P segment to United States E&P segment effective June 30, 2017 in all periods presented. See Note 1 for further information.
Three Months Ended June 30, 2016Three Months Ended June 30, 2017
  Not Allocated   Not Allocated  
(In millions)N.A. E&P Int'l E&P OSM to Segments TotalU.S. E&P Int'l E&P to Segments Total
Sales and other operating revenues$617
 $159
 $185
 $(91)
(c) 
$870
$695
 $220
 $43
(c) 
$958
Marketing revenues53
 23
 13
 
 89
7
 28
 
 35
Total revenues670
 182
 198
 (91) 959
702
 248
 43
 993
Income from equity method investments
 37
 
 
 37

 51
 
 51
Net gain on disposal of assets and other income2
 7
 1
 296
(d) 
306
2
 4
 9
 15
Less:                
Production expenses129
 56
 165
 
 350
118
 58
 
 176
Marketing costs52
 23
 13
 
 88
9
 29
 
 38
Exploration expenses37
 4
 7
 141
(e) 
189
30
 
 

30
Depreciation, depletion and amortization433
 68
 49
 11
 561
495
 89
 8
 592
Other expenses (a)
97
 22
 9
 99
(f) 
227
126
 22
 56
(d) 
204
Taxes other than income35
 
 4
 
 39
33
 
 12
 45
Net interest and other
 
 
 86
 86

 
 86
 86
Income tax benefit(41) (2) (10) (15) (68)
Segment income (loss) / Net income (loss)$(70) $55
 $(38) $(117) $(170)
Income tax provision (benefit)
 46
 (5) 41
Segment income (loss) / Income (loss) from continuing operations$(107) $59
 $(105) $(153)
Capital expenditures (b)
$153
 $12
 $7
 $5
 $177
$575
 $14
 $10
 $599
(a)
Includes other operating expenses and general and administrative expenses.
(b)
Includes accruals.
(c)
Unrealized gain on commodity derivative instruments.
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



(d)
Includes pension settlement loss of $3 million. (See Note 8.)
 Three Months Ended June 30, 2016
  Not Allocated  
(In millions)U.S. E&P Int'l E&P to Segments Total
Sales and other operating revenues$617
 $159
 $(91)
(c) 
$685
Marketing revenues53
 23
 
 76
Total revenues670
 182
 (91) 761
Income from equity method investments
 37
 
 37
Net gain on disposal of assets and other income2
 7
 296
(d) 
305
Less:       
Production expenses129
 56
 
 185
Marketing costs52
 23
 
 75
Exploration expenses37
 4
 141
(e) 
182
Depreciation, depletion and amortization433
 68
 11
 512
Other expenses (a)
97
 22
 99
(f) 
218
Taxes other than income35
 
 
 35
Net interest and other
 
 88
 88
Income tax provision (benefit)(41) (2) (11) (54)
Segment income (loss) / Income (loss) from continuing operations$(70) $55
 $(123) $(138)
Capital expenditures (b)
$153
 $12
 $5
 $170
(a) 
Includes other operating expenses and general and administrative expenses.
(b) 
Includes accruals.
(c) 
Unrealized loss on commodity derivative instruments.
(d) 
Primarily related to partial sale of Wyoming upstream and midstream assets. (See noteNote 6.)
(e) 
Impairments associated with decision to not drill remaining Gulf of Mexico undeveloped leases.
(f) 
Includes pension settlement loss of $31 million (See noteNote 8).

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



Three Months Ended June 30, 2015Six Months Ended June 30, 2017
  Not Allocated   Not Allocated  
(In millions)N.A. E&P Int'l E&P OSM to Segments TotalU.S. E&P Int'l E&P to Segments Total
Sales and other operating revenues$993
 $211
 $147
 $(44)
(c) 
$1,307
$1,369
 $423
 $120
(c) 
$1,912
Marketing revenues110
 30
 43
 
 183
13
 56
 
 69
Total revenues1,103
 241
 190
 (44) 1,490
1,382
 479
 120
 1,981
Income from equity method investments
 26
 
 
 26

 120
 
 120
Net gain on disposal of assets and other income11
 4
 
 
 15
7
 14
 9
 30
Less:                
Production expenses179
 64
 207
 
 450
227
 100
 
 327
Marketing costs112
 29
 41
 
 182
16
 56
 
 72
Exploration expenses91
 20
 
 
 111
56
 2
 

58
Depreciation, depletion and amortization634
 71
 35
 11
 751
967
 164
 17
 1,148
Impairments
 
 
 44
(d) 
44
4
 
 
 4
Other expenses (a)
99
 19
 9
 122
(e) 
249
233
 43
 126
(d) 
402
Taxes other than income67
 
 5
 6
 78
72
 
 12
 84
Net interest and other
 
 
 58
 58

 
 164
 164
Income tax provision (benefit)(23) 27
 (30) 20
(f) 
(6)
 96
 (21) 75
Segment income (loss) / Net income (loss)$(45) $41
 $(77) $(305) $(386)
Segment income (loss) / Income (loss) from continuing operations$(186) $152
 $(169) $(203)
Capital expenditures (b)
$551
 $99
 $16
 $12
 $678
$924
 $23
 $11
 $958
(a)
Includes other operating expenses and general and administrative expenses.
(b)
Includes accruals.
(c)
Unrealized gain on commodity derivative instruments.
(d)
Includes pension settlement loss of $17 million. (See Note 8.)
 Six Months Ended June 30, 2016
  Not Allocated  
(In millions)U.S. E&P Int'l E&P to Segments Total
Sales and other operating revenues$1,110
 $255
 $(114)
(c) 
$1,251
Marketing revenues84
 38
 
 122
Total revenues1,194
 293
 (114) 1,373
Income from equity method investments
 51
 
 51
Net gain on disposal of assets and other income3
 13
 233
(d) 
249
Less:       
Production expenses263
 109
 
 372
Marketing costs84
 37
 
 121
Exploration expenses55
 10
 141
(e) 
206
Depreciation, depletion and amortization920
 118
 23
 1,061
Impairments1
 
 
 1
Other expenses (a)
215
 38
 219
(f) 
472
Taxes other than income77
 
 1
 78
Net interest and other
 
 167
 167
Income tax provision (benefit)(153) (14) (140) (307)
Segment income (loss) / Income (loss) from continuing operations$(265) $59
 $(292) $(498)
Capital expenditures (b)
$468
 $44
 $8
 $520
(a) 
Includes other operating expenses and general and administrative expenses.
(b) 
Includes accruals.
(c) 
Unrealized loss on commodity derivative instruments.
(d)
Proved property impairment (See Note 13).
(e)
Includes pension settlement loss of $64 million (see Note 8).
(f)
Includes $135 million of deferred tax expense related to Alberta provincial corporate tax rate increase (see Note 9).

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



 Six Months Ended June 30, 2016
   Not Allocated  
(In millions)N.A. E&P Int'l E&P OSM to Segments Total
Sales and other operating revenues$1,110
 $255
 $333
 $(114)
(c) 
$1,584
Marketing revenues84
 38
 25
 
 147
Total revenues1,194
 293
 358
 (114) 1,731
Income from equity method investments
 51
 
 
 51
Net gain on disposal of assets and other income3
 13
 1
 233
(d) 
250
Less:         
Production expenses263
 109
 306
 
 678
Marketing costs84
 37
 25
 
 146
Exploration expenses55
 10
 7
 141
(e) 
213
Depreciation, depletion and amortization920
 118
 109
 23
 1,170
Impairments1
 
 
 
 1
Other expenses (a)
215
 38
 16
 218
(f) 
487
Taxes other than income77
 
 9
 1
 87
Net interest and other
 
 
 171
 171
Income tax benefit(153) (14) (27) (150) (344)
Segment income (loss) / Net income (loss)$(265) $59
 $(86) $(285) $(577)
Capital expenditures (b)
$468
 $44
 $16
 $8
 $536
(a)
Includes other operating expenses and general and administrative expenses.
(b)Includes accruals.
(c)
Unrealized loss on commodity derivative instruments.
(d) 
Related to net gain on disposal of assets (see Note 6).
(e) 
Impairments associated with decision to not drill remaining Gulf of Mexico undeveloped leases.
(f) 
Includes pension settlement loss of $79 million and severance related expenses associated with workforce reductions of $8 million (see Note 8).
 Six Months Ended June 30, 2015
   Not Allocated  
(In millions)N.A. E&P Int'l E&P OSM to Segments Total
Sales and other operating revenues$1,843
 $393
 $372
 $(21)
(c) 
$2,587
Marketing revenues288
 56
 43
 
 387
Total revenues2,131
 449
 415
 (21) 2,974
Income from equity method investments
 62
 
 
 62
Net gain on disposal of assets and other income11
 14
 1
 1
 27
Less:         
Production expenses381
 131
 382
 
 894
Marketing costs292
 54
 41
 
 387
Exploration expenses126
 75
 
 
 201
Depreciation, depletion and amortization1,317
 135
 97
 23
 1,572
Impairments
 
 
 44
(d) 
44
Other expenses (a)
216
 42
 18
 251
(e) 
527
Taxes other than income128
 
 10
 7
 145
Net interest and other
 
 
 105
 105
Income tax provision (benefit)(112) 24
 (36) (26)
(f) 
(150)
Segment income (loss) / Net income (loss)$(206) $64
 $(96) $(424) $(662)
Capital expenditures (b)
$1,484
 $245
 $37
 $14
 $1,780
(a)
Includes other operating expenses and general and administrative expenses.
(b)
Includes accruals.
(c)
Unrealized loss on commodity derivative instruments.
(d)
Proved property impairments (See Note 13).
(e)
Includes pension settlement loss of $81 million and severance related expenses associated with workforce reductions of $43 million (see Note 8).
(f)
Includes $135 million of deferred tax expense related to Alberta provincial corporate tax rate increase (see Note 9).

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



8.    Defined Benefit Postretirement Plans
The following summarizes the components of net periodic benefit cost:
Three Months Ended June 30,Three Months Ended June 30,
Pension Benefits Other BenefitsPension Benefits Other Benefits
(In millions)2016 2015 2016 20152017 2016 2017 2016
Service cost$6
 $12
 $1
 $1
$5
 $6
 $
 $1
Interest cost10
 13
 2
 2
7
 10
 2
 2
Expected return on plan assets(13) (17) 
 
(10) (13) 
 
Amortization: 
  
  
  
 
  
  
  
– prior service cost (credit)(3) (2) (1) (1)(2) (3) (1) (1)
– actuarial loss4
 7
 
 
2
 4
 
 
Net settlement loss (a)
31
 64
 
 
3
 31
 
 
Net curtailment loss (b)

 
 
 2
Net periodic benefit cost$35
 $77
 $2
 $4
$5
 $35
 $1
 $2
Six Months Ended June 30,Six Months Ended June 30,
Pension Benefits Other BenefitsPension Benefits Other Benefits
(In millions)2016 2015 2016 20152017 2016 2017 2016
Service cost$12
 $24
 $2
 $2
$11
 $12
 $1
 $2
Interest cost21
 27
 5
 5
15
 21
 4
 5
Expected return on plan assets(28) (36) 
 
(22) (28) 
 
Amortization:   
  
  
   
  
  
– prior service cost (credit)(5) (1) (2) (2)(4) (5) (3) (2)
– actuarial loss7
 14
 
 
4
 7
 
 
Net settlement loss (a)
79
 81
 
 
17
 79
 
 
Net curtailment loss (gain) (b)

 1
 
 (4)
Net periodic benefit cost$86

$110

$5

$1
$21

$86

$2

$5
(a) 
Settlements are recognized as they occur, once it is probable that lump sum payments from a plan for a given year will exceed the plan'splan’s total service and interest cost for that year.
(b)

Related to workforce reductions, which reduced the future expected years of service for employees participating in the plans.
During the first six months of 2016,2017, we recorded the effects of settlements of our U.S. pension plans. As required, we remeasured the plans'plans’ assets and liabilities as of the applicable balance sheet dates. The cumulative effects of these events are included in the remeasurement and reflected in both the pension liability and net periodic benefit cost.
During the first six months of 2016,2017, we made contributions of $30$27 million to our funded pension plans.  Weplans and we expect to make additional contributions up to an estimated $34$33 million to our funded pension plans over the remainder of 2016.2017.  During the first six months of 2016,2017, we made payments of $37$8 million and $10$12 million related to unfunded pension plans and other postretirement benefit plans, respectively.
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



9.    Income Taxes
Effective Tax Rate
The effective income tax rate is influenced by a variety of factors including the geographic and functional sources of income and the relative magnitude of these sources of income. The difference between the total provision and the sum of the amounts allocated to segments is reported in the “Not Allocated to Segments” column of the tables in Note 7.
Our For the second quarter and first six months of 2017 and 2016, our effective income tax rates on continuing operations were as follows:
  Three Months Ended June 30, Six Months Ended June 30,
(In millions) 2017 2016 2017 2016
Total pre-tax income (loss) from continuing operations $(112) $(192) $(128) $(805)
Total income tax expense (benefit) $41
 $(54) $75
 $(307)
Effective income tax expense (benefit) rate on continuing operations 37% (28)% 59% (38)%
         
Income taxes at the statutory tax rate of 35% $(39) $(67) $(45) $(282)
Effects of foreign operations 2
 5
 (2) (30)
Adjustments to valuation allowances 76
 5
 133
 5
State income taxes 
 3
 (13) (3)
Other federal tax effects 2
 
 2
 3
Income tax expense (benefit) on continuing operations $41
 $(54) $75
 $(307)
Income tax expense for the second quarter and first six months of 2017 was impacted by a full valuation allowance on our federal deferred tax assets generated in 2017 and increased sales volumes in our Libyan operations where the statutory income tax rate is in excess of 90%. Our Libya income tax expense was $32 million in the second quarter and $77 million in the first six months of 2017 compared to a benefit of $10 million and $21 million for the same periods last year.
In the first six months of 2017 we settled our 2011-2013 Alaska income tax audit, which resulted in the recognition of a tax benefit totaling $13 million. As of June 30, 2017 there are no uncertain tax positions for which it is reasonably possible that the amount would significantly increase or decrease in the next twelve months.  However, as discussed in Note 20, we may be required to adjust the timing of our tax deduction for decommissioning costs and make a payment to the U.K. tax authorities of approximately $130 million in the next twelve months, which would be recovered as future decommissioning activities are performed and deductions claimed. We estimate that any revisions to current and deferred tax liabilities, if we do not prevail, would have no cumulative adverse earnings impact in our consolidated results of operations.  While we believe that it is more likely than not that we will prevail in the Tribunal, if we do not, we have the option to seek appeal. 
The effective tax rate change between years for the second quarter and first six months of 2017 and 2016, was driven by the full valuation allowance on our federal deferred tax assets generated in 2017, and the impacts of foreign operations which includes the tax effects associated with increased sales volumes in Libya.
The impact of foreign operations for the second quarter and first six months of 2017 totaled tax expense of $2 million for three months ended June 30, 2017 and a tax benefit of $2 million for the first six months of 20162017 due to income tax rate differentials from the U.S. statutory rate of 35% associated with foreign operations in Libya, E.G. and 2015 were 37% and 18%.  the U.K. This was offset by deferred tax benefits being generated in the U.K. related to future tax refunds associated with abandonment costs.
In Libya, considerable uncertainty remains around the timing of future production and sales levels. Reliablereliable estimates of 20162017 and 2015 Libyan2016 annual ordinary income from our Libyan operations could not be made, and the range of possible scenarios in the worldwide annual effective tax rate calculation demonstrates significant variability. Thus, the tax benefitimpacts applicable to Libyan ordinary loss was

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


income (loss) were recorded as a discrete item in the first six months of 2016second quarter and 2015.  For the first six months of 20162017 and 2015,2016.  For the second quarter and the first six months of 2017 and 2016, estimated annual effective tax rates were calculated excluding Libya and applied to consolidated ordinary income (loss). Excluding Libya, the effective income tax expense and benefit rates would be 36%an expense of 7% and 15%a benefit of 25% for the second quarter of 2017 and 2016. Excluding Libya, the effective income tax expense and benefit rates would be a benefit of 1% and 36% for the first six months of 20162017 and 2015. The change was driven by2016.
We expect to be in a shiftcumulative loss position in jurisdictional income2017, and tax legislation enacted by the Alberta government on June 29, 2015 to increase the provincial corporate tax rate from 10% to 12%.  Asas a result of this legislation, we recorded additional non-cashhave placed a full valuation allowance on our federal deferred tax expense of $135 million inassets. In the second quarter and first six months of 2015.  2017 this valuation allowance was $76 million and
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



$133 million. During 2017 we expect to realize no tax benefit on any federal deferred tax assets generated. See Deferred Tax Assets section below for further detail.
Deferred Tax Assets
In connection with our assessment of the realizability of our deferred tax assets, we consider whether it is more likely than not that some portion or all of our deferred tax assets will not be realized.  In the event it is more likely than not that some portion or all of our deferred taxes will not be realized, such assets are reduced by a valuation allowance. Future increases toThe estimated realizability of the benefit of our valuation allowance are possible if our estimatesdeferred tax asset is assessed considering a preponderance of evidence. This assessment requires analysis of all available positive and assumptions (particularly as they relate to our long-term commodity price forecast) are revised such that they reduce estimatesnegative evidence. Positive evidence includes reversals of temporary differences, forecasts of future taxable income, duringassessment of future business assumptions and applicable tax planning strategies. Negative evidence includes losses in recent years as well as the carryforwardforecasts of future income (loss) in the realizable period. As of the fourth quarter of 2016, we expected to be in a cumulative loss position in 2017, which constitutes significant objective negative evidence as to the future realizability of the value of our federal deferred tax assets. Due to this negative evidence, we placed a full valuation allowance on our federal deferred tax assets in the fourth quarter of 2016 and expect to realize no tax benefit on any federal deferred tax assets generated in 2017.
10.   Short-term Investments
As of June 30, 2015, we held short-term investments comprised of bank time deposits with original maturities of greater than three months and remaining maturities of less than twelve months. These short-term investments, which were classified as held-to-maturity investments and recorded at amortized cost, matured in the third quarter of 2015.
11.   Inventories
 Liquid hydrocarbons,Crude oil and natural gas and bitumen are recorded at weighted average cost and carried at the lower of cost or marketnet realizable value. Supplies and other items consist principally of tubular goods and equipment which are valued at weighted average cost and reviewed periodically for obsolescence or impairment when market conditions indicate.
June 30, December 31,June 30, December 31,
(In millions)2016 20152017 2016
Liquid hydrocarbons, natural gas and bitumen$31
 $35
Crude oil and natural gas$11
 $6
Supplies and other items241
 278
129
 130
Inventories, at cost$272
 $313
Inventories$140
 $136
12.11.  Property, Plant and Equipment, net of Accumulated Depreciation, Depletion and Amortization
June 30, December 31,June 30, December 31,
(In millions)2016 20152017 2016
North America E&P$13,965
 $15,226
United States E&P$15,888
 $14,158
International E&P2,479
 2,533
2,358
 2,470
Oil Sands Mining9,101
 9,197
Corporate112
 105
91
 99
Net property, plant and equipment$25,657

$27,061
$18,337

$16,727

Our Libya operations continuehave been interrupted in recent years due to be impacted by civil unrest. Operations were interruptedOn September 14, 2016, Force Majeure was lifted and production resumed in mid-2013 as a result of the shutdown of the Es-Sider crude oil terminal, and although temporarily re-opened during the second half of 2014, production remains shut-in. Earlier this year, an Internationally-backed Unity Government was established in Tripoli. During the second quarter, the two National Oil Companies agreed to unify and reportedly have begun preliminary discussions on re-opening the Es-Sider and other crude oil terminals which, if successful, will allow resumption of production operationsOctober 2016 at our Waha concessions. However, considerable uncertainty remains aroundconcession. During December 2016, liftings resumed from the timingEs Sider crude oil terminal. Sales volumes and production continued during the first six months of future production and sales levels.2017, except for a brief interruption in March 2017 due to civil unrest.
As of June 30, 2016,2017, our net property, plant and equipment investment in Libya is $775$767 million, and total proved reserves (unaudited) in Libya as of December 31, 20152016 are 235206 million barrels of oil equivalent ("mmboe"(“mmboe”). We and our partners in the Waha concessions continue to assess the situation and the condition of our assets in Libya. Our periodic assessment of the carrying value of our net property, plant and equipment in Libya specifically considers the net investment in the assets, the duration of our concessions and the reserves anticipated to be recoverable in future periods. The undiscounted cash flows related to our Libya assets continue to exceed the carrying value of $775$767 million by a materialsignificant amount. However, changes in

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


management's forecast assumptions may cause us to reassess our assets in Libya for impairment, and could result in non-cash impairment charges in the future.
Exploratory well costs capitalized greater than one year after completion of drilling were $118$96 million and $85$118 million as of June 30, 20162017 and December 31, 2015.2016. The $33decrease in costs of $22 million increasewas primarily relatesdue to an April 2017 approval by the host government in E.G. to develop Block D offshore E.G. through unitization with the Alba Block Sub Area B offshore Equatorial Guinea wherefield.  As such, the Rodo$22 million exploratory well reached total depthcosts capitalized greater than one year after completion associated with the Corona well are no longer being deferred.
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



12. Impairments and Exploration Expenses
As a result of our announced disposition of our Canadian business in the first quarter of 2015. We have since completed2017, we recorded a seismic feasibility studypre-tax non-cash impairment charge of $6.6 billion primarily related to property, plant and continue to finalize next stepsequipment. This impairment in our Canadian business is reflected as discontinued operations in the Alba Block Sub Area Bconsolidated statements of income and the consolidated statements of cash flows for all periods presented. See Note 6 for relevant detail regarding dispositions.

The following table summarizes the components of exploration program.expenses:
 Three Months Ended June 30, Six Months Ended June 30,
(In millions)2017 2016 2017 2016
Exploration Expenses       
Unproved property impairments$25
 $133
 $45
 $144
Dry well costs
 15
 
 15
Geological and geophysical
 
 1
 
Other5
 34
 12
 47
Total exploration expenses$30
 $182
 $58
 $206

13.  Fair Value Measurements
 Fair Values - Recurring
The following tables present assets and liabilities accounted for at fair value on a recurring basis as of June 30, 20162017 and December 31, 20152016 by fair value hierarchy level.
June 30, 2016June 30, 2017
(In millions)Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
Derivative instruments, assets              
Commodity (a)
$
 $6
 $
 $6
$
 $60
 $
 $60
Interest rate
 12
 
 12

 54
 
 54
Derivative instruments, assets$
 $18
 $
 $18
$
 $114
 $
 $114
Derivative instruments, liabilities              
Commodity (a)
$
 $70
 $
 $70
$
 $
 $
 $
Derivative instruments, liabilities$
 $70
 $
 $70
$
 $
 $
 $
(a)  
Derivative instruments are recorded on a net basis in the company'sour balance sheet (seesheet. See Note 14).14.

December 31, 2015December 31, 2016
(In millions)Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
Derivative instruments, assets              
Commodity (a)
$
 $51
 $
 $51
$
 $
 $
 $
Interest rate
 8
 
 8

 68
 
 68
Derivative instruments, assets$
 $59
 $
 $59
$
 $68
 $
 $68
Derivative instruments, liabilities              
Commodity (a)
$
 $1
 $
 $1
$
 $60
 $
 $60
Derivative instruments, liabilities$
 $1
 $
 $1
$
 $60
 $
 $60
(a)  
Derivative instruments are recorded on a net basis in the company'sour balance sheet (seesheet. See Note 14).14.
Commodity derivatives include three-way collars, two-way collars, call options and swaptions.swaps. These instruments are measured at fair value using either thea Black-Scholes Model or the Blacka modified Black-Scholes Model. Inputs to boththe models include commodity prices, interest rates, and implied volatility. The inputs to these modelsvolatility and are categorized as Level 2 because predominantly all assumptions and inputs are observable in active markets throughout the term of the instruments.
Interest
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



Both our interest rate swaps and forward starting interest rate swaps are measured at fair value with a market approach using actionable broker quotes, which are Level 2 inputs. See Note 14 for additional discussion of the types of derivative instruments we use.
Fair Values - Goodwill
Unlike long-lived assets, goodwill must be tested for impairment at least annually, or between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Goodwill is tested for impairment at the reporting unit level. As of June 30, 2017 we have $115 million of goodwill associated with our International E&P reporting unit. We estimate the fair value of our International E&P reporting unit using a combination of market and income approaches. The market approach referenced observable inputs specific to us and our industry, such as the price of our common equity, our enterprise value, and valuation multiples of us and our peers from the investor analyst community. The income approach utilized discounted cash flows, which were based on forecasted assumptions. Key assumptions to the income approach include future liquid hydrocarbon and natural gas pricing, estimated quantities of liquid hydrocarbons and natural gas proved and probable reserves, estimated timing of production, discount rates, future capital requirements, and operating expenses and tax rates. The assumptions used in the income approach

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


are consistent with those that management uses to make business decisions. These valuations methodologies represent Level 3 fair value measurements. We performed our annual impairment test in April 20162017 and concluded no impairment was required. As of the date of our last impairment assessment, the fair value of our International E&P reporting unit exceeded its book value by over 40%. While the fair value of our International E&P reporting unit exceeded the book value, subsequent commodity price and/or common stock declines may cause us to reassess our goodwill for impairment, andvariations in the above assumptions could result in non-cashmaterially different calculations of fair value and determinations of whether or not an impairment charges in the future.is indicated.
Fair Values- Nonrecurring
The following table showsdiscusses the values of assets by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition.
 Three Months Ended June 30,
 2016 2015
(In millions)Fair Value Impairment Fair Value Impairment
Long-lived assets held for use$
 $
 $17
 $44
 Six Months Ended June 30,
 2016 2015
(In millions)Fair Value Impairment Fair Value Impairment
Long-lived assets held for use$
 $1
 $17
 $44
Long-lived assets held for use that were impaired are discussed below. The fair valuesAs a result of each were measured using an income approach based upon internal estimatesour announced disposition of future production levels, prices and discount rate, all of which are Level 3 inputs. Inputs toour Canadian business in the fair value measurement include reserve and production estimates made by our reservoir engineers, estimated future commodity prices adjusted for quality and location differentials and forecasted operating expenses for the remaining estimated life of the reservoir.
During the secondfirst quarter of 2015,2017, we recorded a non-cash impairment charge of $44 million$6.6 billion primarily related to East Texas, North Louisianaproperty, plant and Wilburton, Oklahoma natural gasequipment. This impairment was recorded for excess net book value over anticipated sales proceeds less costs to sell. Fair values of assets as a result of the anticipatedheld for sale (See Note 6). The fair values were measured using a probability weighted income approachdetermined based on bothupon the anticipated sales price andproceeds less costs to sell, which resulted in a held-for-use model.Level 2 classification. See Note6 for relevant detail regarding dispositions.
Fair Values – Financial Instruments
Our current assets and liabilities include financial instruments, the most significant of which are receivables, long-term debt and payables. We believe the carrying values of our receivables and payables approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments, (2) our credit rating, and (3) our historical incurrence of and expected future insignificant bad debt expense, which includes an evaluation of counterparty credit risk.
The following table summarizes financial instruments, excluding receivables, payables and derivative financial instruments, and their reported fair values by individual balance sheet line item at June 30, 20162017 and December 31, 2015.
2016.
June 30, 2016 December 31, 2015June 30, 2017 December 31, 2016
Fair Carrying Fair CarryingFair Carrying Fair Carrying
(In millions)Value Amount Value AmountValue Amount Value Amount
Financial assets              
Current assets (a)$753
 $753
 $7
 $7
Other noncurrent assets$198
 $206
 $104
 $118
104
 107
 105
 108
Total financial assets $198
 $206
 $104
 $118
$857
 $860
 $112
 $115
Financial liabilities 
  
  
  
 
  
  
  
Other current liabilities$25
 $24
 $34
 $33
$43
 $54
 $68
 $75
Long-term debt, including current portion (a)
7,186
 7,291
 6,723
 7,291
Long-term debt, including current portion (b)7,451
 7,293
 7,449
 7,292
Deferred credits and other liabilities121
 117
 97
 95
110
 103
 114
 107
Total financial liabilities $7,332
 $7,432
 $6,854
 $7,419
$7,604
 $7,450
 $7,631
 $7,474
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



(a)    Includes our two notes receivable relating to the sale of our Canadian business as of June 30, 2017, see note 6 for further information.
(b) Excludes capital leases, debt issuance costs and interest rate swap adjustments.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


Fair values of our notes receivable and our financial assets included in other noncurrent assets, and of our financial liabilities included in other current liabilities and deferred credits and other liabilities, are measured using an income approach and most inputs are internally generated, which results in a Level 3 classification. Estimated future cash flows are discounted using a rate deemed appropriate to obtain the fair value.
Most of our long-term debt instruments are publicly-traded.publicly traded. A market approach, based upon quotes from major financial institutions, which are Level 2 inputs, is used to measure the fair value of such debt. The fair value of our debt that is not publicly-tradedpublicly traded is measured using an income approach. The future debt service payments are discounted using the rate at which we currently expect to borrow. All inputs to this calculation are Level 3.
14. Derivatives
For further information regarding the fair value measurement of derivative instruments, see Note 13. All of our interest rate and commodity derivatives are subject to enforceable master netting arrangements or similar agreements under which we may report net amounts. The following tables present the gross fair values of derivative instruments and the reported net amounts where they appear on the consolidated balance sheets.
June 30, 2016 June 30, 2017 
(In millions)Asset Liability Net Asset Balance Sheet LocationAsset Liability Net Asset Balance Sheet Location
Fair Value Hedges            
Interest rate$12
 $
 $12
 Other noncurrent assets$1
 $
 $1
 Other current assets
Total Designated Hedges$12
 $
 $12
 $1
 $
 $1
 
            
June 30, 2016 
(In millions)Asset Liability Net Liability Balance Sheet Location
Not Designated as Hedges            
Interest rate$53
 $
 $53
 Other current assets
Commodity

$6
 $39
 $33
 Other current liabilities57
 
 57
 Other current assets
Commodity
 31
 31
 Deferred credits and other liabilities3
 
 3
 Other noncurrent assets
Total Not Designated as Hedges$6
 $70
 $64
 $113
 $
 $113
 
Total$114

$
 $114
 

 December 31, 2016  
(In millions)Asset Liability Net Asset Balance Sheet Location
Fair Value Hedges       
     Interest rate$3
 $
 $3
 Other current assets
     Interest rate1
 
 1
 Other noncurrent assets
Cash Flow Hedges       
     Interest rate$64
 $
 $64
 Other noncurrent assets
Total Designated Hedges$68
 $
 $68
  
        
Not Designated as Hedges       
     Commodity$
 $60
 $(60) Other current liabilities
Total Not Designated as Hedges$
 $60
 $(60)  
     Total$68
 $60
 $8
  

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


 December 31, 2015  
(In millions)Asset Liability Net Asset Balance Sheet Location
Fair Value Hedges       
     Interest rate$8
 $
 $8
 Other noncurrent assets
        
Not Designated as Hedges       
     Commodity$51
 $1
 $50
 Other current assets

Derivatives Designated as Fair Value Hedges
The following table presents, by maturity date, information about our interest rate swap agreements, including the weighted average, London Interbank Offer Rate (“LIBOR”)-based, floating rate.
 June 30, 2016 December 31, 2015
 Aggregate Notional AmountWeighted Average, LIBOR-Based, Aggregate Notional AmountWeighted Average, LIBOR-Based,
Maturity Dates(in millions)Floating Rate (in millions)Floating Rate
October 1, 2017$600
4.94% $600
4.73%
March 15, 2018$300
4.77% $300
4.66%

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)


 June 30, 2017 December 31, 2016
 Aggregate Notional AmountWeighted Average, LIBOR Aggregate Notional AmountWeighted Average, LIBOR
Maturity Dates(in millions)Floating Rate (in millions)Floating Rate
October 1, 2017$600
5.54% $600
5.10%
March 15, 2018$300
5.49% $300
5.04%
The pretax effects of derivative instruments designated as hedges of fair value in our consolidated statements of income are summarizedhas a gross impact that is not material to net interest and other in the table below. Thereall periods presented. Additionally, there is no ineffectiveness related to fair value hedges.hedges in all periods presented.

  Gain (Loss)
  Three Months Ended June 30, Six Months Ended June 30,
(In millions)Income Statement Location2016 2015 2016 2015
Derivative        
Interest rateNet interest and other$
 $(2) $4
 $3
Hedged Item  
  
  
  
Long-term debtNet interest and other$
 $2
 $(4) $(3)
Derivatives notNot Designated as Hedges
Interest Rate Swaps
During the third quarter of 2016, we entered into forward starting interest rate swaps to hedge the variations in cash flows related to fluctuations in long term interest rates from debt that are probable to be refinanced by us in 2018, specifically interest rate risk associated with future changes in the benchmark treasury rate. We designated these derivative instruments as cash flow hedges. The occurrence of the forecasted transaction was probable at June 30, 2017 and each respective derivative contract can be tied to an anticipated underlying dollar notional amount. During the second quarter of 2017 we de-designated the forward starting interest rate swaps previously designated as cash flow hedges resulting in a mark-to-market gain of $3 million, in net interest and other, at June 30, 2017, of which $1 million was reclassified from other comprehensive income.
The following table presents, by maturity date, information about our forward starting interest rate swap agreements, including the rate.
 June 30, 2017 December 31, 2016
 Aggregate Notional AmountWeighted Average, LIBOR Aggregate Notional AmountWeighted Average, LIBOR
Maturity Dates(in millions)Fixed Rate (in millions)Fixed Rate
March 15, 2018$7501.57% $7501.57%
The following table sets forth the net impact of the forward starting interest rates swap derivatives de-designated as cash flow hedges on other comprehensive income (loss).
 Three Months Ended June 30, Six Months Ended June 30,
(In millions)2017 2016 2017 2016
Interest Rate Swaps       
  Beginning balance$61
 $
 $60
 $
Change in fair value recognized in other comprehensive income(14) 
 (13) 
  Reclassification from other comprehensive income(1) 
 (1) 
  Ending balance$46
 $
 $46
 $
At June 30, 2017, accumulated other comprehensive income included deferred gains of $46 million related to the de-designated forward starting interest rate swaps previously designated as cash flow hedges. As of June 30, 2017, we expected to reclassify this amount into earnings as an adjustment to net interest and other upon the occurrence of the forecasted transaction.
In July of 2017, the forecasted transaction consummated and we issued $1 billion in senior unsecured notes, see Note 16 for further detail. This resulted in the termination of our forward starting interest rate swaps, previously designated as cash flow hedges, with proceeds of $54 million. In the third quarter of 2017, we will recognize into earnings a gain of
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



approximately $47 million, in net interest and other, as we have previously reclassified into earnings a gain of $7 million primarily from other comprehensive income due to ineffectiveness.
Commodity Derivatives
We have entered into multiple crude oil and natural gas derivatives indexed to NYMEX WTI and Henry Hub related to a portion of our forecasted North AmericaUnited States E&P sales through December 2017.2018. These commodity derivatives consist of three-way collars, two-way collars,swaps, and call options and swaptions.options. Three-way collars consist of a sold call (ceiling), a purchased put (floor) and a sold put. The ceiling price is the maximum we will receive for the contract volumes, the floor is the minimum price we will receive, unless the market price falls below the sold put strike price. In this case, we receive the NYMEX WTI/Henry Hub price plus the difference between the floor and the sold put price. These commodity derivatives were not designated as hedges. The following table sets forth outstanding derivative contracts as of June 30, 20162017 and the weighted average prices for those contracts:
Crude Oil
 Year Ending December 31,20172018
Third QuarterFourth Quarter2017Third QuarterFourth QuarterFirst QuarterSecond Quarter
Three-Way Collars(a)Three-Way Collars(a)Three-Way Collars(a)   
Volume (Bbls/day)47,00050,00050,00020,00020,000
Price per Bbl: 
Weighted average price per Bbl:    
Ceiling$55.37$60.37$60.37$57.86$57.86
Floor$50.23$54.80$54.80$53.00$53.00
Sold put$40.96$47.80$47.80$47.00$47.00
Sold call options (a)(b)
     
Volume (Bbls/day)10,00035,00035,00035,000
Price per Bbl$72.39$61.91
Two-way Collars 
Volume (Bbls/day)10,000
Price per Bbl: 
Ceiling$50.00 
Floor$41.55 
Weighted average price per Bbl$61.91$61.91
(a) 
Subsequent to June 30, 2017, we entered into 20,000 Bbls/day of three-way collars for January - December 2018 with an average ceiling price of $55.09, a floor price of $50.00, and a sold put price of $43.00.
(b)
Call options settle monthly.

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)
Natural Gas
 20172018
 Third QuarterFourth QuarterFirst QuarterSecond QuarterThird QuarterFourth Quarter
Three-Way Collars      
Volume (MMBtu/day)120,000120,000200,000160,000160,000160,000
Weighted average price per MMBtu:      
Ceiling$3.58$3.71$3.79$3.61$3.61$3.61
Floor$3.09$3.14$3.08$3.00$3.00$3.00
Sold put$2.55$2.60$2.55$2.50$2.50$2.50
Swaps      
Volume (MMBtu/day)20,00020,000
Weighted average price per MMBtu$2.93$2.93


Natural Gas
  Year Ending December 31,
 Third QuarterFourth Quarter2017
Three-Way Collars (a)
   
Volume (MMBtu/day)20,00020,00040,000
Price per MMBtu   
Ceiling$2.93$2.93$3.28
Floor$2.50$2.50$2.75
Sold put$2.00$2.00$2.25
(a)
On our 2016 collars, the counterparty has the option to execute fixed-price swaps (swaptions) at a weighted average price of $2.93 per MMBtu indexed to NYMEX Henry Hub, which is exercisable on December 22, 2016. If counterparty exercises, the term of the fixed-price swaps would be for the calendar year 2017 and, if all such options are exercised, 20,000 MMBtu per day.
The mark-to-market impact and settlement of these commodity derivative instruments appears in sales and other operating revenues in our consolidated statements of income for the three and six month periods ended June 30, 2017 and 2016, respectively. The three and six month periods ended June 30, 2017 impact was a net gain of $56 million and $137 million compared to a net loss of $88 million and $90 million compared to a net loss of $43 million and $17 million for the same respective periodsperiod in 2015.2016. Net cash received from settlements of commodity derivative instruments for the three and six month periods ended June 30, 20162017 was $14$13 million and $46$17 million compared to $4$2 million and $24 million for both of the respective periodsperiod in 2015.2016.
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



15.    Incentive Based Compensation
 Stock options, restricted stock awards and restricted stock units
The following table presents a summary of activity for the first six months of 2016:2017: 
Stock Options Restricted Stock Awards & UnitsStock Options Restricted Stock Awards & Units
Number of
Shares
 
Weighted
Average
Exercise Price
 Awards 
Weighted
Average Grant
Date Fair Value
Number of
Shares
 
Weighted
Average
Exercise Price
 Awards 
Weighted
Average Grant
Date Fair Value
Outstanding at December 31, 201512,665,419
 
$29.97
 4,017,344
 
$30.76
Outstanding at December 31, 201611,915,533
 
$27.71
 6,933,533
 
$14.44
Granted1,680,000
(a) 

$7.22
 5,233,984
 
$7.91
799,591
(a) 

$15.80
 3,908,344
 
$16.37
Options Exercised/Stock Vested
 
 (1,148,953) 
$32.29
(8,666) 
$7.22
 (2,237,657) 
$17.61
Canceled(973,295) 
$25.76
 (557,051) 
$23.20
(2,009,085) 
$35.48
 (529,721) 
$15.84
Outstanding at June 30, 201613,372,124
 
$27.42
 7,545,324
 
$15.23
Outstanding at June 30, 201710,697,373
 
$25.37
 8,074,499
 
$14.40
(a)    The weighted average grant date fair value of stock option awards granted was $1.97$6.07 per share.
Stock-based performance unit awards
 During the first six months of 2016,2017, we granted 1,205,517563,631 stock-based performance units to certain officers. The grant date fair value per unit was $3.72.$17.75.
16.  Debt
Revolving Credit Facility
As of June 30, 2016,2017, we had no borrowings against our $3.3 billion revolving credit facility (the "Credit Facility"“Credit Facility”), as described below.
In March 2016,June 2017, we extended the maturity date of our Credit Facility from May 28, 2020 to May 28, 2021, and maintained the Credit Facility at $3.3 billion. In July 2017, we increased our $3.0$3.3 billion unsecured Credit Facility by $300$93 million to a total of $3.3$3.4 billion. Fees on the unused commitment of each lender, as well as the borrowing options under the Credit Facility, remain unaffected by the increase and term extension. We have the ability to request two additional one-year extensions and an option to increase the commitment amount by up to an additional $107 million, subject to the consent of any increasing lenders.  The sub-facilities for swing-line loans and letters of credit remain unchanged allowing up to an aggregate amount of $100 million and $500 million, respectively. 
The Credit Facility includes a covenant requiring that our ratio of total debt to total capitalization not exceed 65% as of the last day of each fiscal quarter. If an event of default occurs, the lenders holding more than half of the commitments may terminate the commitments under the Credit Facility and require the immediate repayment of all outstanding borrowings and the cash collateralization of all outstanding letters of credit under the Credit Facility. As of June 30, 2016,2017, we were in compliance with this covenant with a debt-to-capitalization ratio of 28%37%.
Long-term debt
On July 24, 2017, we issued $1 billion of 4.4% senior unsecured notes that will mature on July 15, 2027. Interest on the senior notes is payable semi-annually beginning January 15, 2018. We may redeem some or all of the senior notes at any time at the applicable redemption price, plus accrued interest, if any. We will use the net proceeds of $990 million plus existing cash on hand to redeem the following senior notes:
$682 million 6.0% Notes Due in 2017
$854 million 5.9% Notes Due in 2018
$228 million 7.5% Notes Due in 2019

The new issuance together with the redemption will result in a reduction in total gross debt of approximately $750 million in the third quarter of 2017.
In July 2017, we gave notice that we will redeem during the third quarter of 2017, $1.76 billion of the senior unsecured notes discussed above in accordance with their make-whole call provisions. As a result of this notice we expect to recognize into earnings an estimated loss of approximately $40 to $50 million, in loss on extinguishment of debt, during the third quarter of 2017. See Note 14 for detail relating to the proceeds of $54 million, which will result in a gain of approximately $47 million
MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



Debt Issuance
Ininto earnings in the secondthird quarter of 2015,2017, on the termination of our forward starting interest rate swaps associated with this issuance.
As a result of the debt issuance discussed above, we issued $2 billion aggregate principal amountreclassified $990 million of unsecured seniorthe 6.0% notes due in 2017 and used5.9% notes due in 2018 to long-term debt as we have the aggregateintent and ability to redeem them with the net proceeds to repay our $1 billion 0.90% senior notes November 1, 2015, and for general corporate purposes.received from the debt issuance. Therefore, as of June 30, 2017, we had long-term debt due within one year of $548 million.
17.  Reclassifications Out of Accumulated Other Comprehensive Loss
The following table presents a summary of amounts reclassified from accumulated other comprehensive loss:
Three Months Ended June 30, Six Months Ended June 30, Three Months Ended June 30, Six Months Ended June 30, 
(In millions)2016 2015 2016 2015 Income Statement Line2017 2016 2017 2016 Income Statement Line
    
Postretirement and postemployment plansPostretirement and postemployment plans       Postretirement and postemployment plans       
Amortization of actuarial loss$(4) $(7) $(7) $(14) General and administrative$(2) $(4) $(4) $(7) General and administrative
Net settlement loss(31) (64) (79) (81) General and administrative(3) (31) (17) (79) General and administrative
Net curtailment gain (loss)
 (2) 
 3
 General and administrative
Derivative hedges        
Ineffective portion of derivative hedge(1) 
 (1) 
 Net interest and other
(35) (73) (86) (92) Income (loss) from operations(6) (35) (22) (86) Income (loss) from operations
13
 25
 29
 32
 Provision (benefit) for income taxes
 13
 
 29
 Benefit for income taxes
Total reclassifications to expense, net of tax(6) (22) (22) (57) Income (loss) from continuing operations
Foreign currency hedges        
Net recognized gain in discontinued operations, net of tax
 
 (30) 
 Income (loss) from discontinued operations
Total reclassifications to expense$(22) $(48) $(57) $(60) Net income (loss)$(6) $(22) $(52) $(57) Net income (loss)
18. Stockholder's Equity
In March 2016, we issued 166,750,000 shares of our common stock, par value $1 per share, at a price of $7.65 per share, excluding underwriting discounts and commissions, for net proceeds of $1,236 million. The proceeds were used to strengthen our balance sheet and for general corporate purposes, including funding a portion of our Capital Program.
19.  Supplemental Cash Flow Information
Six Months Ended June 30,Six Months Ended June 30,
(In millions)2016 20152017 2016
Net cash (used in) operating activities:      
Interest paid (net of amounts capitalized)$(177) $(143)$(193) $(177)
Income taxes paid to taxing authorities(61) (165)(43) (61)
Noncash investing activities: 
  
Noncash investing activities, related to continuing operations: 
  
Asset retirement cost increase$2
 $6
$12
 $2
Asset retirement obligations assumed by buyer83
 
2
 83
Increase in capital expenditure accrual183
 
Notes receivable for disposal of assets742
 

MARATHON OIL CORPORATION
Notes to Consolidated Financial Statements (Unaudited)



20.   Commitments and Contingencies
The U.K. tax authorities have challenged the timing of deductibility for certain Brae area decommissioning costs which we claimed for U.K. corporation tax purposes.  The dispute relates to the timing of the deduction and does not dispute the general deductibility of decommissioning costs. In July 2017, a hearing took place at the U.K.’s First-tier Tribunal with respect to this tax deduction.  If we do not prevail in the Tribunal, we may be required to adjust the timing of our tax deduction and make a payment to the U.K. tax authorities of approximately $130 million, which would be recovered as future decommissioning activities are performed and deductions claimed. We estimate that any revisions to current and deferred tax liabilities, if we do not prevail, would have no cumulative adverse earnings impact in our consolidated results of operations.  While we believe that it is more likely than not that we will prevail in the Tribunal, if we do not, we have the option to seek appeal. 
We are a defendant in a number of legal and administrative proceedings arising in the ordinary course of business including, but not limited to, royalty claims, contract claims, tax disputes and environmental claims. While the ultimate outcome and impact to us cannot be predicted with certainty, we believe the resolution of these proceedings will not have a material adverse effect on our consolidated financial position, results of operations or cash flows. 
We have incurred and will continue to incur capital, operating and maintenance, and remediation expenditures as a result of environmental laws and regulations.  If these expenditures, as with all costs, are not ultimately reflected in the prices of our products and services, our operating results will be adversely affected.  We believe that substantially all of our competitors must comply with similar environmental laws and regulations.  However, the specific impact on each competitor may vary depending on a number of factors, including the age and location of its operating facilities, marketing areas and production processes.
21.   Subsequent Event
During the third quarter 2016, we executed an agreement to terminate our Gulf of Mexico deepwater drilling rig contract. As a result, we expect to recognize a termination payment of $113 million in other operating expense in that quarter.




Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations 
The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the preceding consolidated financial statements and notes in Item 1.
Executive Overview
We are an independent global exploration and production company based in Houston, Texas with operations in North America, Europe and Africa and a focusfocused on U.S. unconventional resource plays.plays with operations in the United States, Africa and Europe. Total proved reserves were 2.21.4 billion boe at December 31, 20152016, excluding our Canadian business, and total assets were $33$24.2 billion at June 30, 2016.2017.
Our significant strategic actionsAs discussed in Note 6 to the consolidated financial statements, we closed on the sale of our Canadian business, which has been reflected as discontinued operations and financial resultsis excluded from operations in all periods presented.
Key highlights include the following:
Strengthened balance sheetLiquidity and corporate financing
At the end of the second quarter 2017, we had $5.9 billion of liquidity, comprised of $2.6 billion in cash and an undrawn $3.3 billion revolving credit facility.
In July 2017 we expanded the capacity of the revolving credit facility from $3.3 billion to $3.4 billion, and in June 2017 we extended the maturity date one year to 2021.
In July 2017, we issued $1 billion of 4.4% senior notes due in 2027. Net proceeds plus existing cash on hand will be used in the third quarter to redeem approximately $1.8 billion of 6% senior notes due in 2017, 5.9% senior notes due in 2018 and 7.5% senior notes due in 2019. The offering and redemption will reduce total gross debt by approximately $750 million.
Simplifying our portfolio
Closed on the sale of our Canadian business for approximately $2.5 billion with over $1.8 billion in proceeds received to date and $750 million to be received in first quarter 2018.
Closed on the Permian basin acquisitions for approximately $1.8 billion with cash on hand.
Financial and Operational results
Net sales volumes from continuing operations are 357 mboed, which is 4% higher compared to the same quarter last year; this includes a 7% increase to 202 mboed sales volumes in the U.S. resource plays in our United States E&P segment.
Cash provided by operating activities from continuing operations of $923 million for the first six months of 2017, is primarily a result of our average crude oil and condensate price realizations of $47.46 per bbl in the first half of 2017.
Our net loss per share from continuing operations was $0.18 in the second quarter of 2017 as compared to a net loss per share of $0.16 in the same period last year. Included in the second quarter 2017 and comparable period net loss are:
AtAn increase in sales and other operating revenues of approximately 40% to $958 million, including a commodity derivative net gain of $56 million compared to a net loss of $88 million in the end of the second quarter of 2016, we had $5.9 billion of liquidity, comprised of $2.6 billion in cash and an undrawn $3.3 billion revolving credit facilitycomparable quarter.
Cash-adjusted debt-to-capital ratio of 20% at June 30, 2016, as compared with 25% at December 31, 2015
Focused on cost reductions
Production expenses per boeexpense decreased 5% while sales volumes increased in the second quarter of 2016, as2017 compared to the same periodquarter last year improved in the North America E&P segment by 13% to $6.28 per boe and in the International E&P segment by 22% to $5.09 per boeyear.
Our provision for income taxes was $41 million in the second quarter of 2017 compared to a benefit of $54 million

in the same quarter last year, resulting from Libya tax expense due to resumption of production and no tax benefit due to the full valuation allowance on our federal deferred tax assets in the current quarter.
Exploration expenses decreased primarily as a result of our decision in 2016 Capital Program reduced by $100 millionnot to $1.3 billiondrill any of our remaining undeveloped Gulf of Mexico leases.
Eagle Ford completed well costs down 30% to $4.2 million versus the same quarter last year
Simplifying and concentrating portfolio
Closed on the PayRock acquisition of STACK assets in Oklahoma for $888 million, funded with cash on hand
Entered into agreements for over $1 billion of transaction value related to non-core asset sales; already received over $800 million in proceeds through August 1, 2016
Major Project updates
Alba B3 compression project in E.G., designed to maintain the production plateau two additional years and extend field life up to eight years, was completed within budget and on schedule with first gas in July
Outside-operated Gunflint development project in the Gulf of Mexico achieved first oil in July
Financial results
Cash provided by operating activities of $252 million for the first six months of 2016, despite average crude oil and condensate price realizations of $35.27 per bbl.
Net loss per share of $0.20 in the second quarter of 2016 as compared to net loss per share of $0.57 in the same period last year. Included in the second
Second quarter 2016 includes a net loss are:
Unrealized losses from our commodity derivative instruments totaling $91gain on sale of $294 million pre-tax
Net gains on disposal of non-core assets totaling $294 million, pre-tax
Non-cash impairments totaling $141 million, pre-tax, as a result primarily relating to the sale of our decision not to drill any of our remaining Gulf of Mexico leasesWyoming upstream and midstream non-core assets.

Outlook
Commodity prices are the most significant factor impacting our revenues, profitability, operating cash flows and the amount of capital available to reinvest into our business. Our focus continues on the strengthening of the balance sheet, the simplification and concentration of our portfolio and cost reductions which during the second quarter of 2016 included a reduction to our Capital Program of $100 million to $1.3 billion for the year.

Exploration Update
In September 2015, we announced our intention to scale back our conventional exploration program, with future exploration investment focused on fulfilling our existing commitments in the Gulf of Mexico and Gabon.  In second quarter of 2016, we made the decision to not drill our remaining Gulf of Mexico undeveloped leases. As a result, we recorded a non-cash impairment of $141 million in the second quarter of 2016. Additionally, during the third quarter 2016, we executed an agreement to terminate our Gulf of Mexico deepwater drilling rig contract. As a result, we expect to recognize a termination payment of $113 million in other operating expense in that quarter.
Operations
The following table presents a summary of our sales volumes for each of our segments. Refer to the following Results of Operations section for a price-volume analysis for each of the segments.
 Three Months Ended June 30, Six Months Ended June 30,
Net Sales Volumes2016 2015 Increase
(Decrease)
 2016 2015 Increase
(Decrease)
North America E&P (mboed)
224 274 (18)% 232 278 (17)%
International E&P (mboed)
120 108 11% 108 112 (4)%
Oil Sands Mining (mbbld) (a)
49 29 69% 54 44 23%
Total (mboed)
393 411 (4)% 394 434 (9)%
(a) Includes blendstocks
North America
 Three Months Ended June 30, Six Months Ended June 30,
Net Sales Volumes2017 2016 Increase (Decrease) 2017 2016 Increase
(Decrease)
United States E&P (mboed)
222 224 (1)% 215 232 (7)%
International E&P (mboed)
135 120 13% 131 108 21%
Total Continuing Operations (mboed)
357 344 4% 346 340 2%

United States E&P
Net sales volumes in the segment were marginally lower in the second quarter and first six months of 20162017 primarily as a result of decreased drillingthe disposition of Wyoming and completion activity resultingcertain other non-operated assets in fewer wells brought to sales as well as 17 mboed relating to dispositions of certain non-core assets (Gulf ofWest Texas and New Mexico in 2016, which was partially offset by the acquisitions and East Texas, North Louisianadevelopment in the Oklahoma STACK and Wilburton, Oklahoma) during the second half of 2015.Northern Delaware. The following tables provide details regarding net sales volumes, sales mix and operational drilling activity for our significant operations within this segment:
 Three Months Ended June 30, Six Months Ended June 30,
Net Sales Volumes2016 2015 Increase
(Decrease)
 2016 2015 Increase
(Decrease)
Equivalent Barrels (mboed)
           
Eagle Ford109 135 (19)% 114 141 (19)%
Oklahoma Resource Basins27 24 13% 27 24 13%
Bakken53 61 (13)% 55 59 (7)%
Other North America (a)
35 54 (35)% 36 54 (33)%
Total North America E&P224 274 (18)% 232 278 (17)%
(a)     Includes 17 mboed of Gulf of Mexico and other conventional onshore U.S. production, which was disposed of during the sale of non-core assets in the second half of 2015.

 Three Months Ended June 30, Six Months Ended June 30,
Net Sales Volumes (a)2017 2016 Increase (Decrease) 2017 2016 Increase
(Decrease)
Equivalent Barrels (mboed)
           
Oklahoma Resource Basins49 27 81% 46 27 70%
Eagle Ford100 109 (8)% 100 114 (12)%
Bakken49 53 (8)% 48 55 (13)%
Northern Delaware4  100% 2  100%
Other United States (b)
20 35 (43)% 19 36 (47)%
Total United States E&P222 224 (1)% 215 232 (7)%
 Three Months Ended June 30, 2016
Sales Mix - U.S. Resource PlaysCrude oil and condensate Natural gas liquids Natural gas
      
Eagle Ford56% 21% 23%
Oklahoma Resource Basins21% 29% 50%
Bakken83% 9% 8%
(a)
Our U.S. Resource plays consists of the Oklahoma Resource Basins, Eagle Ford, Bakken and Northern Delaware.
(b) Three and six months ended June 30, 2017 includes a net sales volume reduction from June 30, 2016 of 21 mboed primarily consisting of the disposition of Wyoming and certain non-operated assets in West Texas and New Mexico in 2016. See Note 6 to the consolidated financial statements for further disposition information.
 Three Months Ended June 30, Six Months Ended June 30,
 2016 2015 2016 2015
Gross Operated       
Eagle Ford:       
Wells drilled to total depth40 59 98 147
Wells brought to sales30 52 80 143
Oklahoma Resource Basins:       
Wells drilled to total depth6 5 11 13
Wells brought to sales5 3 8 8
Bakken:       
Wells drilled to total depth 5 3 25
Wells brought to sales4 22 10 46


  Three Months Ended June 30, 2017
Sales Mix - U.S. Resource Plays Oklahoma Resource Basins Eagle Ford Bakken Northern Delaware Total
Crude oil and condensate 29% 59% 80% 56% 56%
Natural gas liquids 24% 20% 12% 16% 19%
Natural gas 47% 21% 8% 28% 25%

 Three Months Ended June 30, Six Months Ended June 30,
 2017 2016 2017 2016
Gross Operated - U.S. Resource Plays       
        
Oklahoma Resource Basins:       
Wells drilled to total depth23 6 38 11
Wells brought to sales20 5 32 8
Eagle Ford:       
Wells drilled to total depth53 40 98 98
Wells brought to sales41 30 88 80
Bakken:       
Wells drilled to total depth33  45 3
Wells brought to sales2 4 6 10
Northern Delaware       
Wells drilled to total depth2  2 
Wells brought to sales (a)
2  2 
Eagle Ford(a) – Of the 30 gross operated wellsIncludes one well brought to sales during the second quarter of 2016, 19 were Lower Eagle Ford, 3 were Upper Eagle Ford and 8 were Austin Chalk. Production decreases were due to lower completion activity with fewer gross operated wells brought to sales and reduced contribution from 2015 high-density pads drilled at tighter well spacing. Our average time to drill an Eagle Ford wellearly in the second quarter 2016, spud-to-total depth, was 8 days, a decrease from 11 days inprior to the same quarter last year as efficiency gains in drilling continued. Wells were drilled at an average rateclosing of 2,400 feet per day.the acquisition.
Oklahoma Resource BasinsOfOur net sales volumes in the 5second quarter increased by more than 80% from the year ago quarter, with net sales volumes of 49 mboed in second quarter 2017. Our second STACK infill spacing pilot, the Hansens pad located in the normally pressured Meramec black oil window east of the Yost pad, tested a tighter well spacing design. Additionally, we also continued delineation and leasehold activity with strong results.
Eagle Ford – Our net sales volumes were 100 mboed in the second quarter 2017 which was 8% lower compared to the prior year quarter. We brought 41 gross operated wells brought to sales in the second quarter of 2016, 3 werecompared to 30 in the SCOOP Woodford; 2 were in the STACK Meramec and all were extended laterals. We also participated in 16 outside-operated wells during the second quarter of 2016, 10 of which were2016. A new Company record was set again for the fastest operated well drilled in the SCOOP and 6 were in the STACK.Eagle Ford at a rate of more than 4,200 feet per day.
We closed on the Payrock acquisition in the STACK play in Oklahoma on August 1, 2016 and continue to operate one drilling rig on the acreage with plans to add another rig late in the third quarter. This will bring the total rig count in Oklahoma to 4.
Bakken – OfOur net sales volumes were 49 mboed compared to 53 mboed in the 4prior year quarter. In second quarter 2017 we brought two gross operated wells brought to sales in the Hector with enhanced completion designs.
Northern Delaware – Our net sales volumes were 4 net mboed in second quarter 2017, reflecting the May 1 closing of 2016, 2 wereBC Operating assets and June 1 closing of Black Mountain assets. During second quarter 2017 we brought online our first well with a company designed completion in the Middle Bakken formation and 2Northern Delaware with successful results, pushing delineation west in the Three Forks formation, all with higher intensity completions. We do not currently have an active drilling rig in the Bakken.Eddy County.
Other North AmericaUnited States – Net sales volumes declined in the second quarter of 20162017 primarily due to the 2015 salesdisposition of the non-coreWyoming and certain non-operated assets in West Texas and New Mexico in 2016. See Note 6 to the Gulf of Mexico, East Texas, North Louisiana and Wilburton, Oklahoma. On June 30, we closedconsolidated financial statements for information about dispositions. This decrease was partially offset by the sale of certain of our Wyoming upstream and midstream assets. Net sales volumes for all of our Wyoming assets were approximately 16 mboed for the second quarter and first half of 2016.
The Gunflint field located in Mississippi Canyon block 948 in the Gulf of Mexico achieved firstwhich began production in Julythe second half of 2016. Full production is expected to reach at least 20 mboed gross with oil representing approximately 75% of the volumes produced. We hold an 18% non-operated working interest in the Gunflint field.


International E&P
Net sales volumes in the segment were higher in the second quarter of2017 compared to second quarter 2016 primarily as a resultdue to the resumption of planned turnaroundsales volumes and maintenance activities atproduction in Libya and increased sales volumes in E.G. resulting from the completion and start-up of the E.G. Alba field and E.G. LNG facilitiescompression project in the second quarter of 2015.mid-2016. The following table provides details regarding net sales volumes for our significant operations within this segment.
Three Months Ended June 30, Six Months Ended June 30,Three Months Ended June 30, Six Months Ended June 30,
Net Sales Volumes2016 2015 
Increase
(Decrease)
 2016 2015 Increase
(Decrease)
2017 2016 Increase (Decrease) 2017 2016 Increase
(Decrease)
Equivalent Barrels (mboed)
  
Equatorial Guinea101 89 13% 93 93 —%105 101 4% 104 93 12%
United Kingdom(a)
19 19 —% 15 19 (21)%18 19 (5)% 14 15 (7)%
Libya11  100% 12  100%
Other International1  100% 1  100%
Total International E&P120 108 11% 108 112 (4)%135 120 13% 131 108 21%
Equity Method Investees 
  
 
LNG (mtd)
5,797 4,991 16% 5,060 5,629 (10)%6,243 5,797 8% 6,195 5,060 22%
Methanol (mtd)
1,303 673 94% 1,292 778 66%1,182 1,303 (9)% 1,244 1,292 (4)%
Condensate & LPG (boed)
11,306 8,586 32% 10,757 10,892 (1)%11,608 11,306 3% 13,069 10,757 21%
(a) 
Includes natural gas acquired for injection and subsequent resale of 5 mmcfd and 7 mmcfd for the second quarters of 2016 and 2015, and 5 mmcfd and 9 mmcfd for the first six months of 2016 and 2015.resale.
Equatorial Guinea – Second quarter 20162017 net sales were higher compared to the same quarter in 2016 as a result of 2015 due to lower planned turnaroundthe completion and maintenance activities at the Alba field and E.G. LNG facilities. Thestart-up of our Alba field compression project achieved first gas in July, which is expected to maintain the production plateau for an additional two years and extend field life up to eight years.mid-2016.
United Kingdom – Net sales volumes in the first six months of 2017 were marginally lower compared to the first six months of 2016 were lower due to repair activitiesas a result of reliability issues at the Brae Alpha facility following a process pipe failure in late 2015.  Production was restored at the facility in late April.  Higher overall production efficiency at the remaining Brae facilities and improved reliability from the outside-operated Foinaven field partially offset the Brae Alpha shut-in.Field.
LibyaDueOur Libya operations have been interrupted in recent years due to civil unrest. In late 2016, liftings resumed from the Es Sider crude oil terminal. Sales volumes and production continued civil unrest, there were no liftingswithout interruption during the quarter, or any period presented. Earlier this year, an Internationally-backed Unity Government was established in Tripoli. During the second quarter the two National Oil Companies agreed to unify and reportedly have begun preliminary discussions on re-opening the Es-Sider and other crude oil terminals which, if successful, will allow resumption of production operations at our Waha concessions. However, considerable uncertainty remains around the timing of future production and sales levels.2017.
Oil Sands Mining

 Our net synthetic crude
Market Conditions
Crude oil, sales volumes were 49 mbbldnatural gas and 54 mbbldNGL benchmarks increased in the second quarter and first six months of 2016 compared to 29 mbbld and 44 mbbld in the same periods of 2015. Sales volumes increased in comparison to second quarter and first six months of 2015 which were adversely affected due to planned turnarounds at the base upgrader and Muskeg River Mine and unplanned downtime at the expansion upgrader. These sales volume increases were partially offset by a brief suspension of operations at both the Muskeg River and Jackpine mines in May 2016 in order to support emergency response efforts related to the Fort McMurray area wildfires in addition to the completion of planned maintenance activities at the Jackpine Mine and expansion upgrader that began in the first quarter 2016. Neither of the mines sustained any damage as a result of the wildfires. We hold a 20% non-operated working interest in the Athabasca Oil Sands Project. 



Market Conditions
Prevailing prices for the crude oil, NGLs and natural gas that we produce significantly impact our revenues and cash flows. The benchmark prices for crude oil, NGLs and natural gas were lower in the second quarter and first six months of 20162017 as compared to the same period in 2015;2016; as a result, we experienced declines in ourincreased price realizations associated with those benchmarks. Additional detail on market conditions, including our average price realizations and benchmarks for crude oil, NGLs and natural gas relative to our operating segments, follows.
North AmericaUnited States E&P
 The following table presents our average price realizations and the related benchmarks for crude oil, NGLs and natural gas for the second quarter and first six months of 20162017 and 2015.2016.
Three Months Ended June 30, Six Months Ended June 30,Three Months Ended June 30, Six Months Ended June 30,
2016 2015 Decrease 2016 2015 Increase (Decrease)2017 2016 Increase (Decrease) 2017 2016 Increase (Decrease)
Average Price Realizations (a)
       
Crude Oil and Condensate (per bbl) (b)
$40.77 $52.63 (23)% $34.21 $47.11 (27)%$45.81 $40.77 12% $47.09 $34.21 38%
Natural Gas Liquids (per bbl)
14.84 14.77 —% 11.43
 14.60
 (22)%17.61 14.84 19% 18.46 11.43 62%
Total Liquid Hydrocarbons (per bbl)
35.07 45.96 (24)% 29.32
 41.37
 (29)%39.00 35.07 11% 40.04 29.32 37%
Natural Gas (per mcf)(c)
1.96 2.76 (29)% 1.99
 2.88
 (31)%3.05 1.96 56% 3.03 1.99 52%
Benchmarks       
WTI crude oil (per bbl)
$45.64 $57.95 (21)% 
$39.78
 
$53.34
 (25)%$48.15 $45.64 5% $49.95 $39.78 26%
LLS crude oil (per bbl)
47.35 62.94 (25)% 41.49
 57.97
 (28)%50.18 47.35 6% 51.77 41.49 25%
Mont Belvieu NGLs (per bbl) (c)(d)
17.52 17.65 (1)% 15.78
 18.02
 (12)%20.99 17.52 20% 21.95 15.78 39%
Henry Hub natural gas (per mmbtu)
1.95 2.64 (26)% 2.02
 2.81
 (28)%3.18 1.95 63% 3.25 2.02 61%
(a) 
Excludes gains or losses on commodity derivative instruments.
(b) 
Inclusion of realized gains on crude oil derivative instruments would have increased liquid hydrocarbons average price realizations by $0.12$1.07 per bbl and $0.06$0.12 per bbl for the second quarter 2017 and 2016, and 2015, and $0.91$0.72 per bbl and $0.14$0.91 per bbl for the first six months of 20162017 and 2015. Inclusion of realized gains on natural gas derivative instruments would have increased average realizations by $0.02 per mcf and $0.01 per mcf for the second quarter and first six months of 2016.
(c)
Inclusion of realized gains (losses) on natural gas derivative instruments would have a minimal impact on average price realizations for the periods presented.
(d) 
Bloomberg Finance LLP: Y-grade Mix NGL of 50% ethane, 25% propane, 10% butane, 5% isobutane and 10% natural gasoline.
Crude oil and condensate – Our crude oil and condensate price realizations may differ from the benchmark due to the quality and location of the product.
Natural gas liquids – The majority of our NGL volumes are sold at reference to Mont Belvieu prices.
Natural gas A significant portion of our natural gas production in the U.S. is sold at bid-week prices, or first-of-month indices relative to our specific producing areas.  
International E&P
The following table presents our average price realizations and the related benchmark for crude oil NGLs, and natural gas for the second quarter and first six months of 20162017 and 20152016.
Three Months Ended June 30, Six Months Ended June 30,Three Months Ended June 30, Six Months Ended June 30,
2016 2015 Increase
(Decrease)
 2016 2015 Increase
(Decrease)
2017 2016 Increase (Decrease) 2017 2016 Increase
(Decrease)
Average Price Realizations       
Crude Oil and Condensate (per bbl)
$42.21 $56.70 (26)% $37.56 $52.92 (29)%$47.04 $42.21 11% $48.58 $37.56 29%
Natural Gas Liquids (per bbl)
2.65 3.10 (15)% 2.45
 3.29
 (26)%1.77 2.65 (33)% 2.83 2.45 16%
Liquid Hydrocarbons (per bbl)
32.11 44.70 (28)% 28.11
 41.06
 (32)%37.11 32.11 16% 37.83 28.11 35%
Natural Gas (per mcf)
0.53 0.78 (32)% 0.56
 0.78
 (28)%0.57 0.53 8% 0.56 0.56 —%
Benchmark 
     

 
 
Brent (Europe) crude oil (per bbl) (a)
$45.52 $61.69 (26%) 
$39.61
 
$57.81
 (31)%$49.67 $45.52 9% $51.68 $39.61 30%
(a) 
Average of monthly prices obtained from EIA website.
Liquid hydrocarbons

Our U.K. liquid hydrocarbon production is generally sold in relation to the Brent crude benchmark. Our production from the Alba field in E.G. is condensate and gas. Condensate is sold at market prices and the gas is shipped to the onshore Alba Plant. The Alba Plant extracts NGLs and secondary condensate, which receives lowerhave been supplied under a long-term contract at a fixed price, leaving dry natural gas. The extracted NGLs and secondary condensate are sold by Alba Plant at market prices, than crude oil.


Our NGLwith our share of its income/loss reflected in Income from equity method investments, and the dry natural gas sales in the International E&P segment originate primarily from our E.G. operationsAlba Plant is supplied to AMPCO and are sold to our equity method investeesEGHoldings under fixed-price, term contracts; therefore,long-term contracts at fixed prices. Therefore, our reported average realized prices for condensate, NGLs and natural gas will not fully track market price movements. The equity affiliates then utilize,Because of the location and limited local demand for natural gas in E.G., we consider the prices under the contracts with Alba Plant LLC, EGHoldings and AMPCO to be comparable to the price that could be realized from transactions with unrelated parties in this market under the same or similar circumstances. EGHoldings and AMPCO process the gas into LNG and sell the NGLsmethanol, which are sold at market prices, and natural gas at fixed prices under long-term contracts, with our share of their income/loss reflected in the incomeIncome from equity method investments line item on the consolidated statementsConsolidated Statements of income.Income. Although uncommon, any dry gas not sold is returned offshore and re-injected into the Alba field for later production.
Oil Sands Mining
The Oil Sands Mining segment produces and sells various qualities of synthetic crude oil. Output mix can be impacted by operational reliability or planned unit outages at the mines or upgrader. Sales prices for roughly two-thirds of the normal output mix have historically tracked movements in WTI and one-third have historically tracked movements in the Canadian heavy crude oil marker, primarily WCS.
The following table presents our average price realizations and the related benchmarks for the second quarter and first six months of2016 and 2015.
 Three Months Ended June 30, Six Months Ended June 30,
 2016 2015 Decrease 2016 2015 Increase (Decrease)
Average Price Realizations           
Synthetic Crude Oil (per bbl)
$40.88 $52.46 (22%) 
$32.94
 
$44.33
 (26%)
Benchmarks           
WTI crude oil (per bbl)
$45.64 $57.95 (21%) 
$39.78
 
$53.34
 (25%)
WCS crude oil (per bbl)(a) 
32.29 46.35 (30%) 25.75
 40.13
 (36%)
(a)
Monthly pricing based upon average WTI adjusted for differentials unique to western Canada.


Results of Operations
Three Months Ended June 30, 20162017 vs. Three Months Ended June 30, 20152016
Sales and other operating revenues, including related party are presented by segment in the table below:
Three Months Ended June 30,Three Months Ended June 30,
(In millions)2016 20152017 2016
Sales and other operating revenues, including related party      
North America E&P$617
 $993
United States E&P$695
 $617
International E&P159
 211
220
 159
Oil Sands Mining185
 147
Segment sales and other operating revenues, including related party$961
 $1,351
$915
 $776
Unrealized (loss) gain on commodity derivative instruments(91) (44)
Unrealized gain (loss) on commodity derivative instruments43
 (91)
Sales and other operating revenues, including related party$870
 $1,307
$958
 $685
Below is a price/volume analysis for each segment. Refer to the preceding Operations and Market Conditions sections for additional detail related to our net sales volumes and average price realizations.
 Three Months Ended Increase (Decrease) Related to Three Months Ended Three Months Ended Increase (Decrease) Related to Three Months Ended
(In millions) June 30, 2015 Price Realizations Net Sales Volumes June 30, 2016 June 30, 2016 Price Realizations Net Sales Volumes June 30, 2017
North America E&P Price-Volume Analysis (a)
United States E&P Price-Volume Analysis (a)
United States E&P Price-Volume Analysis (a)
Liquid hydrocarbons $893
 $(172) $(170) $551
 $551
 $59
 $(22) $588
Natural gas 90
 (22) (13) 55
 55
 34
 5
 94
Realized gain on commodity                
derivative instruments 1
 2
 

 3
 3
 

 

 13
Other sales 9
 

 

 8
 8
 

 

 
Total $993
     $617
 $617
     $695
International E&P Price-Volume Analysis
Liquid hydrocarbons $172
 $(50) $7
 $129
 $129
 $25
 $33
 $187
Natural gas 28
 (10) 4
 22
 22
 2
 1
 25
Other sales 11
     8
 8
     8
Total $211
     $159
 $159
     $220
Oil Sands Mining Price-Volume Analysis
Synthetic crude oil $137
 $(51) $95
 $181
Other sales 10
 

 

 4
Total $147
     $185
(a)  
Three months ended June 30, 20162017 includes a net sales volume reduction from June 30, 2016 of 1721 mboed relatedprimarily consisting of the disposition of Wyoming and certain non-operated assets in West Texas and New Mexico in 2016. See Note 6 to dispositions in the Gulf of Mexico and other conventional onshore U.S. production.consolidated financial statements for further information.
Marketing revenuesdecreased $94$41 million in the second quarter of 20162017 from the comparable prior-year2016 period. Marketing activities include the purchase of commodities from third parties for resale and serve to aggregate volumes in order to satisfy transportation commitments as well as to achieve flexibility within product types and delivery points. Since the volume of marketing activity is based on market dynamics, it can fluctuate from period to period. The decreases aredecrease is primarily related primarily to lower marketed volumes in North America E&P and OSM, which were further compounded by a lower commodity price environment.the United States due to non-core asset dispositions.
Income from equity method investments increased $11$14 million in the second quarter of 20162017 from the comparable 20152016 period. The increaseimprovement is primarily due to an increase in net sales volumes as 2015 volumes were lower because of planned turnaround and maintenance activitieshigher price realizations from methanol at the Alba field and E.G. LNG facilities.our AMPCO methanol facility.


Net gain on disposal of assets decreased$288 million in the second quarter of 2016 was2017 primarily related to the gain on sale of our Wyoming upstream and midstream non-core assets and West Texas acreage.in the second quarter of 2016. See Note 6 to the consolidated financial statements for information about dispositions.further information.
Production expenses decreased $100 million. North America$9 million in the second quarter of 2017 versus the same period in 2016. United States E&P declined $50$11 million primarily due to lower operational, maintenance and labor costs, coupled with the disposition of our producingnon-core assets in Wyoming during the Gulfsecond half of Mexico2016 partially offset by our Gunflint field beginning production in the second half of 2016 and East Texas, North Louisianathe acquisitions of our Oklahoma STACK and Wilburton, Oklahoma gasNorthern Delaware assets. International E&P declined $8increased $2 million primarily as a resultin Libya during the second quarter of lower project and labor costs in the U.K. and 2015 also includes costs arising from planned flowline maintenance at the outside operated Foinaven field; these declines were partially offset by increased costs resulting from higher net sales volumes. OSM


decreased $42 million primarily due to lower turnaround costs andcontinued cost management, specifically staffing and contract labor.2017.
The second quarter of 20162017 production expense rate (expense per boe) for North AmericaUnited States E&P was lower as costs declined, primarily due to dispositions, as cost reductions occurred at a rate faster than our production decline.sales volumes were marginally lower. The expense rate for International E&P declined due to an increase in volumes, combined with reduced maintenance and project costs in the U.K. The OSM expense rate decreased as a result of higher sales volumes in E.G. and lower production expenses, as discussed above.Libya.
The following table provides production expense rates for each segment:
Three Months Ended June 30,Three Months Ended June 30,
($ per boe)2016 20152017 2016
Production Expense Rate      
North America E&P
$6.28
 
$7.19
United States E&P
$5.86
 
$6.28
International E&P
$5.09
 
$6.51

$4.68
 
$5.09
Oil Sands Mining (a)

$39.02
 
$78.24
(a)
Production expense per synthetic crude oil barrel (before royalties) includes direct production costs (less pre-development), shipping and handling and taxes other than income.
Marketing costs decreased $94$37 million in the second quarter of 20162017 from the comparable 20152016 period, consistent with the marketing revenues changes discussed above.
Other operating expenses increased $24 million in the second quarter of 2017 primarily as a result of an increase in shipping and handling costs due to rate increases in Bakken and Oklahoma. Additionally, increased sales volumes in Oklahoma due to the Oklahoma STACK acquisition in the second half of 2016 attributed to the increase.
Exploration expensesinclude unproved property impairments, dry well costs, geological and geophysical, and other, which increased $78decreased $152 million in the second quarter of 2017primarily as a result of our decision in 2016 not to not drill any of our remaining Gulf of Mexico undeveloped leases. The following table summarizes the components of exploration expenses:
Three Months Ended June 30,Three Months Ended June 30,
(In millions)2016 20152017 2016
Exploration Expenses      
Unproved property impairments$133
 $40
$25
 $133
Dry well costs22
 41

 15
Geological and geophysical
 12

 
Other34
 18
5
 34
Total exploration expenses$189
 $111
$30
 $182
Depreciation, depletion and amortization decreased $190increased $80 million in the second quarter of 2017 primarily as a result of production volume decreases, a higher proved reserve basean increase of $62 million in Eagle Fordthe United States E&P due to our Gunflint field beginning production in the second half of 20152016 and as a resultsales volumes from the acquisitions and development in the Oklahoma STACK and Northern Delaware.Also contributing to this higher expense was an increase of $21 million in our International E&P segment resulting from higher sales volumes in E.G. due to the non-corecompletion and start-up of our Alba field compression project in mid-2016, and increased U.K. asset dispositionsretirement expenses due to changes in 2015.timing and cost estimates for abandonment that occurred at year-end 2016. Our segments apply the units-of-production method to the majority of their assets, including capitalized asset retirement costs; therefore, proved reserve and production volumes have an impact on DD&A expense.
The DD&A rate (expense per boe), which is impacted by changes in reserves, capitalized costs, and sales volume mix by field, can also cause changes to our DD&A. Our United States E&P DD&A rate increased in the second quarter of 2017 primarily due to the increased rate in the Gulf of Mexico as a result of the Gunflint field achieving first production in mid-2016 and our Oklahoma STACK acquisition. The DD&A rate for International E&P increased primarily due to sales volume mix changes between countries in the current quarter, and increased U.K. asset retirement expenses due to changes in timing and cost estimates for abandonment that occurred at year-end 2016. The following table provides DD&A rates for each segment. The DD&A rate for North America E&P decreased primarily as a result of a higher proved reserve base in Eagle Ford in the second half of 2015. The DD&A rate for International E&P declined due to lower asset retirement costs, with cost estimates refined in the fourth quarter of 2015. The DD&A rate for OSM declined as a result of a higher proved reserve base in the fourth quarter of 2015.


 Three Months Ended June 30,
($ per boe)2016 2015
DD&A Rate   
North America E&P
$21.16
 
$25.45
International E&P
$6.22
 
$7.17
Oil Sands Mining
$11.39
 
$12.87
Impairments decreased $44 million in the second quarter of 2016 as a result of the second quarter of 2015 non-cash impairment charge related to East Texas, North Louisiana and Wilburton, Oklahoma natural gas assets in anticipation of the sale in 2015. See Note 13 to the consolidated financial statements for discussion of the impairment.


 Three Months Ended June 30,
($ per boe)2017 2016
DD&A Rate   
United States E&P
$24.49
 
$21.16
International E&P
$7.23
 
$6.22
Taxes other than income include production, severance, and ad valorem taxes, primarily in the U.S., which tend to increase or decrease in relation to revenue and sales volumes, decreased $39volumes. Taxes other than income increased $10 million in the second quarter of 2017 versus the same period in 2016. The increase in the second quarter of 2017 is primarily due to a reserve for non-income tax examinations relating to open tax years. The following table summarizes the components of taxes other than income:
Three Months Ended June 30,Three Months Ended June 30,
(In millions)2016 20152017 2016
Production and severance$25
 $40
$23
 $25
Ad valorem5
 15
1
 5
Other9
 23
21
 5
Total$39
 $78
$45
 $35
General and administrative expenses decreased $36$38 million primarily due to lowera decrease in pension settlement charges related to workforce reductions which were reduced in the second quarter of 2016, which totaled $312017 to $3 million compared to $64$31 million for the same period in the prior year.
Net interest and other increased $28 million primarily due to increased interest expense associated with our June 2015 debt issuance. See Note 16 to the consolidated financial statements for discussion of the June 2015 debt issuance.2016.
Provision (benefit) for income taxes reflects an effective tax rate from continuing operations of 29%37% in the second quarter of 2016,2017, as compared to 2%a benefit of 28% in the second quarter of 2015.2016. We placed a full valuation allowance on our federal deferred tax assets in the fourth quarter of 2016 and expect to realize no tax benefit on any federal deferred tax assets generated in 2017. See Note 9 to the consolidated financial statements for more detail discussion concerning the rate changes.
Discontinued operations are presented net of tax. See Note 6 to the consolidated financial statements for financial information concerning our discontinued operations.
Segment Income(Loss)
Segment income (loss) represents income (loss) from operations excluding certain items not allocated to segments, net of income taxes, attributable to the operating segments. OurA portion of our corporate and operations support general and administrative costs are not allocated to the operating segments. Gains or losses on dispositions, certain impairments, unrealized gains or losses on commodity derivative instruments, pension settlement losses, or other items that affect comparability also are not allocated to operating segments.
The following table reconciles segment income (loss) to net income (loss):
Three Months Ended June 30,Three Months Ended June 30,
(In millions)2016 20152017 2016
North America E&P$(70) $(45)
United States E&P$(107) $(70)
International E&P55
 41
59
 55
Oil Sands Mining(38) (77)
Segment income (loss)(53) (81)(48) (15)
Items not allocated to segments, net of income taxes(117) (305)(105) (123)
Income (loss) from continuing operations(153) (138)
Income (loss) from discontinued operations (a)
14
 (32)
Net income (loss)$(170) $(386)$(139) $(170)
(a) We entered into an agreement to sell our Canadian business in the first quarter of 2017. The Canadian business is reflected as discontinued operations in all periods presented.
 North AmericaUnited States E&P segment loss increased $25$37 million after-tax in the second quarter of 2017 primarily due to lower price realizationsa decrease in the income tax benefit which resulted from U.S. valuation allowances in the current period and sales volumes, whichan increase in DD&A expenses due to the completion of projects and acquisitions. This was partially offset by the impact ofhigher price realizations and lower net sales volumes to DD&A, production costs and taxes other than income; and lower exploration expenses.due to non-core asset dispositions.
International E&P segment income increased $14$4 million after-tax in the second quarter of 2017 primarily due to decreased exploration expenseshigher price realizations and an increase in sales volumes in E.G. and Libya and an increase in income from equity investments, which were partiallyinvestments. This was nearly completely offset by lower price realizations.
Oil Sands Mining segment loss decreased $39 million after-tax primarily due to higher sales volumes and lower production expenses, partially offset by lower price realizations and higheran increase in DD&A expense.and income tax expenses.











Results of Operations
Six Months Ended June 30, 20162017 vs. Six Months Ended June 30, 20152016
Consolidated Results of Operation
Sales and other operating revenues, including related party are presented by segment in the table below:
Six Months Ended June 30,Six Months Ended June 30,
(In millions)2016 20152017 2016
Sales and other operating revenues, including related party      
North America E&P$1,110
 $1,843
United States E&P$1,369
 $1,110
International E&P255
 393
423
 255
Oil Sands Mining333
 372
Segment sales and other operating revenues, including related party$1,698
 $2,608
$1,792
 $1,365
Unrealized loss on commodity derivative instruments(114) (21)
Unrealized gain (loss) on commodity derivative instruments120
 (114)
Sales and other operating revenues, including related party$1,584
 $2,587
$1,912
 $1,251
 
Below is a price/volume analysis for each segment. Refer to the preceding Operations and Market Conditions sections for additional detail related to our net sales volumes and average price realizations.

 Six Months Ended Increase (Decrease) Related to Six Months Ended Six Months Ended Increase (Decrease) Related to Six Months Ended
(In millions) June 30, 2015 Price Realizations Net Sales Volumes June 30, 2016 June 30, 2016 Price Realizations Net Sales Volumes June 30, 2017
North America E&P Price-Volume Analysis (a)
United States E&P Price-Volume Analysis (a)
United States E&P Price-Volume Analysis (a)
Liquid hydrocarbons $1,633
 $(394) $(279) $960
 $960
 $313
 $(101) $1,172
Natural gas 188
 (51) (24) 113
 113
 61
 3
 177
Realized gain on commodity                
derivative instruments 5
 19
   24
 24
 

   17
Other sales 17
     13
 13
     3
Total $1,843
     $1,110
 $1,110
     $1,369
International E&P Price-Volume Analysis
Crude oil and condensate        
Natural gas liquids        
Liquid hydrocarbons $310
 $(90) $(26) $194
 $194
 $92
 $73
 $359
Natural gas 60
 (17) 
 43
 43
 
 5
 48
Other sales 23
     18
 18
     16
Total $393
     $255
 $255
     $423
Oil Sands Mining Price-Volume Analysis
Synthetic crude oil $355
 $(112) $81
 $324
Other sales 17
     9
Total $372
     $333
(a)      Six months endedending June 30, 20162017 includes a net sales volume reduction from June 30, 2016 of 1721 mboed relatedprimarily consisting of the disposition of Wyoming and certain non-operated assets in West Texas and New Mexico in 2016. See Note 6 to dispositions in the Gulf of Mexico and other conventional onshore U.S. production.consolidated financial statements for further information.
Marketing revenues for the first six months of 20162017 decreased by $240$53 million. Marketing activities include the purchase of commodities from third parties for resale and serve to aggregate volumes in order to satisfy transportation commitments as well as to achieve flexibility within product types and delivery points. BecauseSince the volume of marketing activity is based on market dynamics, it can fluctuate from period to period. The decrease is related primarily to lower marketed volumes in North America, which were further compounded by a lower commodity price environment.the United States E&P segment due to non-core asset dispositions.
Income from equity method investments decreased $11 million. The decrease isincreased $69 million for the first six months of 2017 primarily due to lowerhigher price realizations from LPG at our Alba plant and methanol at our AMPCO methanol facility. Also contributing to the increase was improvement in net sales volumes as a result of planned downtime at E.G. as a resultprimarily driven by the completion of the Alba field compression project which impacted our equity method plants, which was partially offset by planned turnaround and maintenance activities atin E.G. during the Alba field and E.G. LNG facilities in 2015. Also impacting the first six monthssecond half of 2016 were lower price realizations for LPG at our Alba plant.2016.


Net gain (loss) on disposal of assets decreased $227 million for the first six months of 20162017. This decrease was primarily related to the sale of ournon-core assets in the first half of 2016 in Wyoming, upstream and midstream assets and West Texas acreage.and New Mexico, and the Gulf of Mexico. See Note 6 to the consolidated financial statements for information about dispositions.
Production expenses for the first six months of 20162017 decreased by $216$45 million compared to the same period of 2015. North Americain 2016. United States E&P declined $118$36 million primarily due to lower operational, maintenance and labor costs, coupled with the disposition of our producingnon-core assets in Wyoming during the Gulfsecond half of Mexico2016 partially offset by our Gunflint field beginning production in the second half of 2016 and East Texas, North Louisianathe acquisitions of our Oklahoma STACK and Wilburton, Oklahoma gasNorthern Delaware assets. International E&P declined $22$9 million largely due toprimarily as a result of lower operationalplanned maintenance costs in the U.K. OSM decreased $76 million primarily duefirst six months of 2017 in E.G. compared to continued cost management, specifically staffing and contract labor, lower turnaround costs, and a favorable exchange rate on expenses denominatedthe same period in the Canadian Dollar.2016.


The first six months of 20162017 production expense rate (expense per boe) for North AmericaUnited States E&P was lower as costs declined, primarily due to cost reductions that occurred at a rate faster than our production decline.dispositions, and as sales volumes were marginally lower. The International E&P expense rate decreased in the first six months of 20162017 primarily due to reducedan increase in sales volumes in E.G. and Libya, combined with lower planned maintenance and project costs in the U.K. The OSM expense rate decreasedE.G. due to planned maintenance in the first six monthshalf of 2016 primarily due to higher production coupled with lower operational costs.2016.
 Six Months Ended June 30,Six Months Ended June 30,
($ per boe) 2016 20152017 2016
Production Expense Rate       
North America E&P 
$6.22
 
$7.57
United States E&P
$5.82
 
$6.22
International E&P 
$5.53
 
$6.45

$4.22
 
$5.53
Oil Sands Mining (a)
 
$33.42
 
$50.06
(a)
Production expense per synthetic crude oil barrel includes production costs, shipping and handling, taxes other than income and insurance costs and excludes pre-development costs.
Marketing costs decreased $241$49 million in the first six months of 20162017 from the comparable 20152016 period, consistent with the marketing revenues changes discussed above.
Exploration expenses were $12include unproved property impairments, dry well costs, geological and geophysical, and other, which decreased $148 million higher in the first six months of 2016 than in2017 versus the comparable 2015 period primarily due to higher unproved property impairments, which were partially offset by lower dry well costs.2016 period. Unproved property impairments were higher in 2016decreased primarily as a result of our decision in 2016 not to drill any of our remaining Gulf of Mexico leases that we decided not to drill. Dry well costs for the first six months of 2015 primarily consist of costs associated with the Sodalita West #1 well in E.G., the Key Largo well in the Gulf of Mexico, and suspended well costs related to Birchwood in-situ.undeveloped leases. The following table summarizes the components of exploration expenses:
Six Months Ended June 30,Six Months Ended June 30,
(In millions)2016 20152017 2016
Exploration Expenses      
Unproved property impairments$144
 $49
$45
 $144
Dry well costs22
 99

 15
Geological and geophysical
 15
1
 
Other47
 38
12
 47
Total exploration expenses$213
 $201
$58
 $206
Depreciation, depletion and amortization(“DD&A”) decreased $402 increased $87 million in the first six months of 20162017 from the comparable 20152016 period primarily as a result of production volume decreases and a higher proved reserve basean increase of $47 million in Eagle Fordthe United States E&P due to our Gunflint field beginning production in the second half of 2015.2016 and sales volumes from the acquisitions and development in the Oklahoma STACK and Northern Delaware. Also contributing to this higher expense was an increase of $46 million in our International E&P segment resulting from higher sales volumes in E.G. due to the completion and start-up of our Alba field compression project in mid-2016, and increased U.K. asset retirement expenses due to changes in timing and cost estimates for abandonment that occurred at year-end 2016. Our segments apply the units-of-production method to the majority of their assets, including capitalized asset retirement costs; therefore, volumes have an impact on DD&A expense.
The DD&A rate (expense per boe), which is impacted by field-level changes in sales volumes, reserves and capitalized costs, can also cause changes to our DD&A. The DD&A rate for United States E&P increased primarily due to the increased rate in the Gulf of Mexico as a result of the Gunflint field achieving first production in mid-2016 and our Oklahoma STACK acquisition. The DD&A rate for International E&P increased primarily due to sales volume mix changes between countries in the current quarter, and increased U.K. asset retirement expenses due to changes in timing and cost estimates for abandonment that occurred at year-end 2016. The following table provides DD&A rates for each segment. The DD&A rate for North America E&P decreased primarily as a result of a higher proved reserve base in Eagle Ford in the second half of 2015.
 Six Months Ended June 30,
($ per boe)2017 2016
DD&A Rate 
  
United States E&P
$24.81
 
$21.79
International E&P
$6.93
 
$5.98


 Six Months Ended June 30,
($ per boe)2016 2015
DD&A Rate 
  
North America E&P
$21.79
 
$26.16
International E&P
$5.98
 
$6.62
Oil Sands Mining
$11.34
 
$12.58
Impairments decreased $43 million in the first six months of 2016 as a result of the second quarter of 2015 non-cash impairment charge related to East Texas, North Louisiana and Wilburton, Oklahoma natural gas assets in anticipation of the sale in 2015. See Note 13 to the consolidated financial statements for discussion of the impairment.
Taxes other than income include production, severance, and ad valorem taxes, primarily in the U.S., which tend to increase or decrease in relation to revenue and sales volumes, decreased $58volumes. Taxes other than income increased $6 million in the first six months of 20162017 from the comparable 20152016 period. The increase in the first six months of 2017 is primarily due to a reserve for non-income tax examinations relating to open tax years. The following table summarizes the components of taxes other than income:
Six Months Ended June 30,Six Months Ended June 30,
(In millions)2016 20152017 2016
Production and severance$44
 $74
$48
 $44
Ad valorem19
 31
4
 19
Other24
 40
32
 15
Total$87
 $145
$84
 $78
General and administrative expenses decreased $56$80 million in the first six months of 20162017 compared to the same period in 2015.2016. This decrease was primarily due to cost savings realized from the 2015a decrease in pension settlement charges related to workforce reductions and corresponding severance expenses.which were reduced in the first six months of 2017 to $17 million compared to $79 million for the same period in 2016.
Provision (benefit) for income taxes reflectreflects an effective tax ratesrate from continuing operations of 37%59% in the first six months of 2016,2017, as compared to 18%a benefit of 38% from the comparable 20152016 period. We placed a full valuation allowance on our federal deferred tax assets in the fourth quarter of 2016 and expect to realize no tax benefit on any federal deferred tax assets generated in 2017. See Note 9 to the consolidated financial statements for discussion of the effective tax rate.
Discontinued operations are presented net of tax. See the preceding Operations section and Note 6 to the consolidated financial statements for financial information concerning our discontinued operations.
Segment Income(Loss)
Segment income (loss) represents income (loss) from continuing operations excluding certain items not allocated to segments, net of income taxes, attributable to the operating segments. OurA portion of our corporate and operations support general and administrative costs are not allocated to the operating segments. Gains or losses on dispositions, certain impairments, change in tax expense associated with a tax rate change, unrealized gains or losses on crude oilcommodity derivative instruments, pension settlement losses, or other items that affect comparability also are not allocated to operating segments.
The following table reconciles segment income (loss) to net income (loss):
Six Months Ended June 30,Six Months Ended June 30,
(In millions)2016 20152017 2016
North America E&P$(265) $(206)
United States E&P$(186) $(265)
International E&P59
 64
152
 59
Oil Sands Mining(86) (96)
Segment income (loss)(292) (238)(34) (206)
Items not allocated to segments, net of income taxes(285) (424)(169) (292)
Income (loss) from continuing operations(203) (498)
Income (loss) from discontinued operations (a)
(4,893) (79)
Net income (loss)$(577) $(662)$(5,096) $(577)
(a) We entered into an agreement to sell our Canadian business in the first quarter of 2017. The Canadian business is reflected as discontinued operations in all periods presented.
 North AmericaUnited States E&P segment loss increased $59decreased $79 million after-tax in the first six months of 20162017 from the comparable 20152016 period primarily due to lowerhigher price realizations and lower production costs as a result of dispositions and lower sales volumes, whichvolumes. This was partially offset by a decrease in the impactincome tax benefit which resulted from U.S. valuation allowances in the current period, an increase in DD&A expenses due to the completion of lower netprojects and a decrease in our sales volumes primarily due to DD&A, production costs and taxes other than income; and lower exploration expenses.dispositions.
International E&P segment income decreased $5increased $93 million after-tax in the first six months of 20162017 from the comparable 2015 period primarily due to lower liquid hydrocarbon price realizations. These declines were partially offset by lower exploration, production and DD&A expenses.
Oil Sands Mining segment lossdecreased $10 million after-tax in the first six months of 2016 from the comparable 2015 period primarily due to higher price realizations and an increase in sales volumes in E.G. and lower production expenses,Libya, and an increase in income from equity investments. This was partially offset by lower price realizationsan increase in DD&A and higher DD&A expense.income tax expenses.


Critical Accounting Estimates 
There have been no material changes or developments in the evaluation of the accounting estimates and the underlying assumptions or methodologies pertaining to our Critical Accounting Estimates disclosed in our Form 10-K for the year ended December 31, 2015,2016, except as discussed below.
Fair Value Estimates - Goodwill
Goodwill must be tested for impairment at least annually, or between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Goodwill is tested for impairment at the reporting unit level.level, as of June 30, 2017 we have $115 million of goodwill associated with our International E&P reporting unit. We performed our annual impairment test in April 20162017 and concluded no impairment was required. WhileAs of the date of our last impairment assessment, the fair value of our International E&P reporting unit exceeded its book value subsequent commodity price and/or common stock declines may cause us to reassess our goodwill for impairment, and could result in non-cash impairment charges in the future.
Estimated Quantities of Net Reserves
Our December 31, 2015 proved reserves were calculated using the unweighted average of closing benchmark prices nearestby over 40%. See Note 13 to the first day of each month within the 12-month period ("SEC pricing"). The table below provides the 2015 SEC pricingconsolidated financial statements for certain benchmark prices as well as the unweighted average for the first eight months of 2016:
 Unweighted 8-month 2016 AverageUnweighted 12-month 2015 Average
WTI Crude oil$40.48$50.28
Henry Hub natural gas2.242.59
Brent crude oil41.0854.25
Natural gas liquids14.9217.32
Any significant future price change could have a material effect on the quantity and present value of our proved reserves. To the extent that commodity prices decrease during the remainder of 2016, a portion of our proved reserves could be deemed uneconomic and no longer classified as proved. This could impact both proved developed producing reserves as well as proved undeveloped reserves. Assuming lower commodity pricing in the remaining 4-months of 2016, a material volume of our proved reserves could become uneconomic and would have to be reclassified to non-proved reserve or resource category. In this scenario, our OSM proved reserves represent the largest risk to be reclassified to non-proved reserve or resource category. However, any impact of lower SEC pricing will likely be partially offset by continued cost reduction efforts. Also, any volumes reclassified to non-proved reserves could return to proved reserves as commodity prices improve. In the event the OSM proved reserves are reclassified to non-proved reserves or resource, their classification will have no impact on future plans for production.further information.
Accounting Standards Not Yet Adopted
See Note 2 to the consolidated financial statements.


Cash Flows
The following table presents sources and uses of cash and cash equivalents:
Six Months Ended June 30,Six Months Ended June 30,
(In millions)201620152017 2016
Sources of cash and cash equivalents 
 
 
  
Operating activities$252
$717
Operating activities - continuing operations$923
 $267
Disposals of assets758
2
1,726
 758
Borrowings
1,996
Common stock issuance1,236


 1,236
Other39
43
49
 39
Total sources of cash and cash equivalents$2,285
$2,758
$2,698
 $2,300
Uses of cash and cash equivalents    
Cash additions to property, plant and equipment$(753)$(2,320)$(775) $(728)
Deposit for acquisition(89)
Purchases of short-term investments
(925)
Debt issuance costs
(19)
Debt repayments
(34)
Acquisitions, net of cash acquired(1,828) 
Deposits for acquisitions
 (89)
Dividends paid(77)(285)(85) (77)
Purchases of common stock(10) (4)
Other(3)(1)(6) 
Total uses of cash and cash equivalents$(922)$(3,584)$(2,704) $(898)
Cash flows generated from operating activities in the first six months of 2016 were lower2017 was higher as the downturn in the commodity cycle continued. This continued downward pressure on price realizations, coupled with the lower net sales volumes, continuesprices improved compared to negatively impact our cash flows from operating activities. In the first six months of 2016, consolidated average oil and NGL2016. This drove an increase in price realizations were downin the first six months of 2017. Consolidated average liquid hydrocarbon price realizations increased by approximately 27% and consolidated net sales volumes declined by 9%more than 35% during the first six months of 2017 as compared to the prior year.period. This increase in price realization coupled with our continued focus on cost reduction, including production expense and general & administrative expense, resulted in our increased cash flows generated from operating activities.
Proceeds from the disposals of assets for the first six months of 2017 are primarily from the saledisposal of our Wyoming upstream and midstream assets;Canadian business; see Note 6 to the consolidated financial statements for further information concerning dispositions. Common stock issuance reflects net proceeds received in March 2016 from our public sale of common stock. See Liquidity and Capital Resources belowNote 18 to the consolidated financial statements for additional information.


Additions to property, plant and equipment are our most significant use of cash and cash equivalents and were lower in the first halfsix months of 20162017 were consistent with a reducedour Capital Program as compared to the prior year.Program. The following table shows capital expenditures related to continuing operations by segment and reconciles to additions to property, plant and equipment as presented in the consolidated statements of cash flows (the table excludes an $89 million deposit paid into escrow related toflows:
 Six Months Ended June 30,
(In millions)2017 2016
United States E&P$924
 $468
International E&P23
 44
Corporate11
 8
Total capital expenditures958
 520
Decrease (increase) in capital expenditure accrual(183) 208
Total use of cash and cash equivalents for property, plant and equipment$775
 $728
In the second quarter of 2017 we closed on our acquisition of PayRockthe Northern Delaware assets - seefor a purchase price of $1.8 billion, subject to closing adjustments. See Note 5 to the consolidated financial statements for further information related to this acquisition):
 Six Months Ended June 30,
(In millions)2016 2015
North America E&P$468
 $1,484
International E&P44
 245
Oil Sands Mining16
 37
Corporate8
 14
Total capital expenditures536
 1,780
Decrease in capital expenditure accrual217
 540
Total use of cash and cash equivalents for property, plant and equipment$753
 $2,320
additional information.
The Board of Directors approved a $0.05 per share dividend for the first quarter of 2016,2017, which was paid in the second quarter of 2016.2017. See Capital Requirements below for additional information about the second quarter dividend.


Liquidity and Capital Resources
In March 2016,On July 24, 2017, we issued 166,750,000 shares$1 billion of 4.4% senior unsecured notes that will mature on July 15, 2027. Interest on the senior notes is payable semi-annually beginning January 15, 2018. We will use the net proceeds plus existing cash on hand to redeem the following senior notes:
$682 million 6.0% Notes Due in 2017
$854 million 5.9% Notes Due in 2018
$228 million 7.5% Notes Due in 2019

The new issuance together with the redemption will result in a reduction in total gross debt of approximately $750 million in the third quarter of 2017. In July 2017, we gave notice that we will redeem during the third quarter of 2017, $1.76 billion of the senior unsecured notes discussed above in accordance with their make-whole call provisions. As a result of this notice we expect to recognize into earnings an estimated loss of approximately $40 to $50 million, in loss on extinguishment of debt, during the third quarter of 2017. See Note 14 for detail relating to the proceeds of $54 million, which will result in a gain of approximately $47 million into earnings in the third quarter of 2017, on the termination of our common stock, par value $1 per share, at a price of $7.65 per share, excluding underwriting discounts and commissions, for net proceeds of $1,236 million. The proceeds were used to strengthen our balance sheet and for general corporate purposes, including funding a portionforward starting interest rate swaps associated with this issuance.
In June 2017, we extended the maturity date of our Capital Program.
Also in March 2016,Credit Facility from May 28, 2020 to May 28, 2021, and maintained the Credit Facility at $3.3 billion. In July 2017, we increased our $3$3.3 billion unsecured Credit Facility by $300$93 million to a total of $3.3$3.4 billion. Fees on the unused commitment of each lender, as well as the borrowing options under the Credit Facility, remain unaffected by the increase.increase and term extension. We have the ability to request two additional one-year extensions and an option to increase the commitment amount by up to an additional $107 million, subject to the consent of any increasing lenders.  The sub-facilities for swing-line loans and letters of credit remain unchanged allowing up to an aggregate amount of $100 million and $500 million, respectively. 
Our main sources of liquidity are cash and cash equivalents, sales of non-core assets, internally generated cash flow from operations, sales of non-core assets, capital market transactions, and our revolving credit facility. At June 30, 2017, we had approximately $5.9 billion of liquidity consisting of $2.6 billion in cash and cash equivalents and $3.3 billion Credit Facility.available under our revolving credit facility. Our working capital requirements are supported by these sources and we may draw on our $3.3 billion Credit Facilityrevolving credit facility to meet short-term cash requirements, or issue debt or equity securities through the shelf registration statement discussed below as part of our longer-term liquidity and capital management.management program. Because of the alternatives available to us as discussed above, we believe that our short-term and long-term liquidity isare adequate to fund not only our current operations, but also our near-term and long-term funding requirements including our capital spending programs, dividend payments, defined benefit plan contributions, repayment of debt maturities, and other amounts that may ultimately be paid in connection with contingencies.
DueGeneral economic conditions, commodity prices, and financial, business and other factors could affect our operations and our ability to decreases in crude oil and U.S. natural gas prices, credit rating agencies reviewed companies inaccess the industry earlier this year, including us. During the first quarter of 2016, ourcapital markets. Our corporate credit rating was downgraded by:ratings as of June 30, 2017 are: Standard & Poor's Ratings Services to BBB- (stable) from BBB (stable); by Fitch Ratings to BBB (negative) from BBB+ (stable); and by Moody's Investor Services, Inc. to Ba1 (negative) from Baa1 (stable). Any further rating downgradesA downgrade in our credit ratings could increase our future cost of financing or limit our ability to access capital, and result in additional collateral requirements. See Item 1A. Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 20152016 for a discussion of how a further downgrade in our credit ratings could affect us.
The June 23, 2016 referendum by British voters to exit the European Union (“Brexit”) provided uncertainty and potential volatility around European currencies, and resulted in a decline in the value of the British pound, as compared to the U.S. dollar and other currencies. Volatility in exchange rates may continue in the short term as the U.K. negotiates its exit from the European Union. A weaker British pound compared to the U.S. dollar during a reporting period causes local currency results of our U.K. operations to be translated into fewer U.S. dollars. For our U.K. operations a majority of our revenues are tied to global crude oil prices which are denominated in U.S. dollars while a significant portion of our operating and capital costs are denominated in British pounds. In addition, our U.K. operations have an asset retirement obligation, which represents a future cash commitment. In the longer term, any impact from Brexit on our U.K. operations will depend, in part, on the outcome of tariff, trade, regulatory, and other negotiations.

Capital Resources
Credit Arrangements and Borrowings
At June 30, 2016,2017, we had no borrowings against our revolving credit facility.
At June 30, 2016,2017, we had $7.3 billion in long-term debt outstanding, with our nextoutstanding. As a result of the debt maturity inissuance discussed above, we reclassified $990 million of the amount of $682 million6.0% senior notes due in 2017 and 5.9% senior notes due in 2018 to long-term debt as we have the fourth quarterintent and ability to redeem them with the net proceeds received from the debt issuance. Therefore, as of 2017.June 30, 2017, we had long-term debt due within one year of $548 million.
We do not have any triggers on any of our corporate debt that would cause an event of default in the case of a downgrade of our credit ratings.
Shelf Registration
We have a universal shelf registration statement filed with the SEC under which we, as a "well-known seasoned issuer" for purposes of SEC rules, have the ability to issue and sell an indeterminate amount of various types of equitydebt and debtequity securities. 
Asset DisposalsDisposal
DuringIn the second quarter of 2017 we announcedclosed on the sale of our Wyoming upstreamCanadian business for $2.5 billion, excluding closing adjustments. Under the terms of the agreement, $1.8 billion was paid to us upon closing and midstream assets forthe remaining proceeds of $870$750 million before closing adjustments, of which approximately $690 million was receivedwill be paid to us in the second quarter.  The remaining asset sales are subjectfirst quarter of 2018. See Note 6 to the receipt of certain tribal consents and are expected to close before year end. The proceedsconsolidated financial statements for the remaining asset sales were deposited into an escrow account by the buyer.
In March and April 2016, we entered into separate agreements to sell our 10% working interest in the outside-operated Shenandoah discovery in the Gulf of Mexico, operated natural gas assets in the Piceance basin in Colorado and certain undeveloped acreage in West Texas for a combined total of approximately $80 million in proceeds, before closing adjustments. We closed on certain of the asset sales during the six months ended June 30, 2016. The remaining asset sales are expected to close by year-end.


additional information.
Cash-Adjusted Debt-To-Capital Ratio
Our cash-adjusted debt-to-capital ratio (total debt-minus-cash and cash equivalents to total debt-plus-equity-minus-cash and cash equivalents) was 20%27% at June 30, 2016,2017, compared to 25%21% at December 31, 2015.2016.
June 30, December 31,June 30, December 31,
(In millions)2016 20152017 2016
Long-term debt due within one year$1
 $1
$548
 $686
Long-term debt7,280
 7,276
6,715
 6,581
Total debt$7,281
 $7,277
$7,263
 $7,267
Cash and cash equivalents$2,584
 $1,221
$2,614
 $2,488
Equity$19,153
 $18,553
$12,405
 $17,541
Calculation: 
  
 
  
Total debt$7,281
 $7,277
$7,263
 $7,267
Minus cash and cash equivalents2,584
 1,221
2,614
 2,488
Total debt minus cash, cash equivalents$4,697
 $6,056
$4,649
 $4,779
Total debt$7,281
 $7,277
$7,263
 $7,267
Plus equity19,153
 18,553
12,405
 17,541
Minus cash and cash equivalents2,584
 1,221
2,614
 2,488
Total debt plus equity minus cash, cash equivalents$23,850
 $24,609
$17,054
 $22,320
Cash-adjusted debt-to-capital ratio20% 25%27% 21%
Capital Requirements
We closed on our purchase agreementCapital Spending
As a result of PayRock for $888 million, as discussedstrong operational performance in Note 5 to the consolidated financial statements. Wefirst half of the year and continued efficiency gains we expect our Capital Program for full-year 20162017 to be $1.3decrease from $2.4 billion or $100 million lower than the original budget, which includes the increased activity from the PayRock acquisition.to a range of $2.1 to $2.2 billion.
Other Expected Cash Outflows
On July 27, 2016,26, 2017, our Board of Directors approved a dividend of $0.05 per share for the second quarter of 20162017 payable September 12, 201611, 2017 to stockholders of record at the close of business on August 17, 2016.16, 2017.
As of June 30, 2016,2017, we plan to make contributions of up to $34$33 million to our funded pension plans during the remainder of 2016.2017.
In July 2017, we gave notice that we will redeem during the third quarter of 2017, $1.76 billion of the senior unsecured notes discussed above in accordance with their make-whole call provisions. As a result of this notice we expect to recognize


into earnings an estimated loss of approximately $40 to $50 million, in loss on extinguishment of debt, during the third quarter of 2017.
Contractual Cash Obligations
As of June 30, 2016,2017, there are no material changes to our consolidated cash obligations to make future payments under existing contracts, as disclosed in our 20152016 Annual Report on Form 10-K, except for cash obligations primarily relating to the agreement we entered intosale of our Canadian business. See Note 6 to acquire PayRock as described above, which was paid with cash on hand.
During the third quarter we executed an agreement to terminate our Gulf of Mexico deepwater drilling rig contract, asconsolidated financial statements for additional information. As a result, we expectas of June 30, 2017, our consolidated contractual cash obligations from our continuing operations has decreased by $1,239 million from December 31, 2016 primarily due to make a termination paymentobligations relating to the sale of $113our Canadian business. Our purchase obligations under oil and gas activities decreased by $45 million, during the third quarter ofservice and materials contracts decreased $646 million and transportation and related contracts decreased $270 million when comparing June 30, 2017 to December 31, 2016.

Environmental Matters and Other Contingencies
In July 2015, we received a request for information from the EPA under Section 114 of the Clean Air Act regarding several tank batteries used in our Bakken operations.  BeginningWe executed a settlement agreement with the North Dakota Department of Health relating to this matter in the secondfourth quarter of 2016 we have been in settlement discussions withthat includes a base penalty of $294,000 that will be reduced under the State of North Dakota’s Department of Health regarding potential noncompliance with the Clean Air Act, North Dakota Century Code Air Pollution Control provisions, and implementing regulations. To date, no federal or state enforcement action has been commenced in connection with this matter.  We anticipate that resolution of this matter will result in civil or administrative penalties of an undetermined amount and require us to undertaketerms by mitigating corrective actions which may increase our development and/or operating costs.actions.  We do not believe that any penalties or corrective action expenditures that may result from this matter will have a material adverse effect on our financial position, results of operation or cash flows. 
See Note 20 to the consolidated financial statements for a description of other contingencies.


Forward-Looking Statements
This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 (the "Exchange Act"“Exchange Act”). All statements other than statements of historical fact, including without limitation statements regarding our future performance, business strategy, reserve estimates, asset quality, production guidance, drilling plans, capital plans, cost and expense estimates, assetsasset acquisitions and sales,dispositions, future financial position, future payments for our Canadian disposition and other plans and objectives for future operations, are forward-looking statements. Words such as “anticipate,” “believe,” "could,"“could,” “estimate,” “expect,” “forecast,” "guidance,“guidance,” “intend," "intend," "may,"“may,” “plan,” “project,” “seek,” “should,” "target," "will,"“target,” “will,” “would” or similar words may be used to identify forward-looking statements; however, the absence of these words does not mean that the statements are not forward-looking. While we believe our assumptions concerning future events are reasonable, a number of factors could cause results to differ materially from those projected, including, but not limited to:
conditions in the oil and gas industry, including supply/supply and demand levels for crude oil and condensate, NGLs and natural gas and the resulting impact on price;
changes in expected reserve or production levels;
changes in political and economic conditions in the jurisdictions in which we operate, including changes in foreign currency exchange rates, interest rates, inflation rates, and global and domestic market conditions;
risks related to our hedging activities;
capital available for exploration and development;
risks relatedthe inability of any party to satisfy closing conditions with respect to our hedging activities;
our level of success in integrating acquisitions;
well production timing;asset disposition;
drilling and operating risks;
well production timing;
availability of drilling rigs, materials and labor;labor, including the costs associated therewith;
difficulty in obtaining necessary approvals and permits;
non-performance by third parties of contractual obligations;
unforeseen hazards such as weather conditions;
political conditions, and developments, including political instability, acts of war or terrorist acts and the governmental or military response thereto;
cyber-attacks;
changes in safety, health, environmental, tax and other regulations;
other geological, operating and economic considerations; and
the risk factors, forward-looking statements and challenges and uncertainties described in our 20152016 Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other filings with the SEC.
All forward-looking statements included in this report are based on information available to us on the date of this report. WeExcept as required by law, we undertake no obligation to revise or update any forward-looking statements as a result of new information, future events or otherwise.


Item 3. Quantitative and Qualitative Disclosures About Market Risk
For a detailed discussion of our risk management strategies and our derivative instruments, see Item 7A. Quantitative and Qualitative Disclosures About Market Risk in our 20152016 Annual Report on Form 10-K. Notes 13 and 14 to the consolidated financial statements include additional disclosures regarding our open derivative positions, including underlying notional quantities, how they are reported in our consolidated financial statements and how their fair values are measured.
Commodity Price Risk During the first six months of 2016,2017, we entered into crude oil and natural gas derivatives, indexed to NYMEX WTI and Henry Hub, related to a portion of our forecasted North AmericaUnited States E&P sales. The following tables provide a summary of open positions as of June 30, 20162017 and the weighted average price for those contracts:
Crude Oil
 Year Ending December 31,20172018
Third QuarterFourth Quarter2017Third QuarterFourth QuarterFirst QuarterSecond Quarter
Three-Way Collars(a)Three-Way Collars(a)Three-Way Collars(a)    
Volume (Bbls/day)47,00050,00050,00020,00020,000
Price per Bbl: 
Weighted average price per Bbl:    
Ceiling$55.37$60.37$60.37$57.86$57.86
Floor$50.23$54.80$54.80$53.00$53.00
Sold put$40.96$47.80$47.80$47.00$47.00
Sold call options (a)(b)
     
Volume (Bbls/day)10,00035,00035,00035,000
Price per Bbl$72.39$61.91
Two-way Collars 
Volume (Bbls/day)10,000
Price per Bbl: 
Ceiling$50.00 
Floor$41.55 
Weighted average price per Bbl$61.91$61.91
(a)
Subsequent to June 30, 2017, we entered into 20,000 Bbls/day of three-way collars for January - December 2018 with an average ceiling price of $55.09, a floor price of $50.00, and a sold put price of $43.00.
(b) 
Call options settle monthly.
Natural Gas
  Year Ending December 31,
 Third QuarterFourth Quarter2017
Three-Way Collars (a)
   
Volume (MMBtu/day)20,00020,00040,000
Price per MMBtu   
Ceiling$2.93$2.93$3.28
Floor$2.50$2.50$2.75
Sold put$2.00$2.00$2.25
(a)
On our 2016 collars, the counterparty has the option to execute fixed-price swaps (swaptions) at a weighted average price of $2.93 per MMBtu indexed to NYMEX Henry Hub, which is exercisable on December 22, 2016. If counterparty exercises, the term of the fixed-price swaps would be for the calendar year 2017 and, if all such options are exercised, 20,000 MMBtu per day.


Natural Gas
 20172018
 Third QuarterFourth QuarterFirst QuarterSecond QuarterThird QuarterFourth Quarter
Three-Way Collars      
Volume (MMBtu/day)120,000120,000200,000160,000160,000160,000
Weighted average price per MMBtu:      
Ceiling$3.58$3.71$3.79$3.61$3.61$3.61
Floor$3.09$3.14$3.08$3.00$3.00$3.00
Sold put$2.55$2.60$2.55$2.50$2.50$2.50
Swaps      
Volume (MMBtu/day)20,00020,000
Weighted average price per MMBtu$2.93$2.93

The following table provides a sensitivity analysis of the projected incremental effect on income (loss) from operations of a hypothetical 10% change in NYMEX WTI and Henry Hub prices on our open commodity derivative instruments as of June 30, 2016.2017.
(In millions)Hypothetical Price Increase of 10%Hypothetical Price Decrease of 10%Hypothetical Price Increase of 10%Hypothetical Price Decrease of 10%
  
Crude oil derivatives$(32)$73
$(30)$18
Natural gas derivatives(5)5
(15)13
Total$(37)$78
$(45)$31



Interest Rate Risk Sensitivity analysis of the incremental effect of a hypothetical 10% changedecrease in interest rates on financial assets and liabilities as of June 30, 2016,2017, is provided in the following table.
(In millions)Fair Value Incremental Change in Fair ValueFair Value Incremental Change in Fair Value
Financial assets (liabilities): (a)
      
Interest rate swap agreements$12
(b) 
$1
Interest rate fair value hedges$1
(b) 
$1
Interest rate swaps$53
(b) 
$(15)
Long term debt, including amounts due within one year$(7,186)
(b)(c) 
$(287)$(7,451)
(b)(c) 
$(254)
(a) 
Fair value of cash and cash equivalents, receivables, accounts payable and accrued interest approximate carrying value and are relatively insensitive to changes in interest rates due to the short-term maturity of the instruments. Accordingly, these instruments are excluded from the table.
(b) 
Fair value was based on market prices where available, or current borrowing rates for financings with similar terms and maturities.
(c) 
Excludes capital leases.
    
Item 4. Controls and Procedures
An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) was carried out under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer.  As of the end of the period covered by this Report based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the design and operation of these disclosure controls and procedures were effective as of June 30, 2016.2017.  
During the second quarterfirst six months of 2016,2017, there were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.


Part II – OTHER INFORMATION
Item 1. Legal and Administrative Proceedings
We are a defendant in a number of legal and administrative proceedings arising in the ordinary course of business, including, but not limited to, royalty claims, contract claims, tax disputes and environmental claims. While the ultimate outcome and impact to us cannot be predicted with certainty, we believe the resolution of these proceedings will not have a material adverse effect on our consolidated financial position, results of operations or cash flows.  
See Note 20 to the consolidated financial statements included in Part I, Item I for a description of such legal and administrative proceedings.
The following is a summary of certain proceedings involving us that were pending or contemplated as of June 30, 2017 under federal, state and international environmental laws:
In July 2015, we received a request for information from the EPA under Section 114 of the Clean Air Act regarding several tank batteries used in our Bakken operations.  BeginningWe executed a settlement agreement with the North Dakota Department of Health relating to this matter in the secondfourth quarter of 2016 we have been in settlement discussions withthat includes a base penalty of $294,000 that will be reduced under the State of North Dakota’s Department of Health regarding potential noncompliance with the Clean Air Act, North Dakota Century Code Air Pollution Control provisions, and implementing regulations. To date, no federal or state enforcement action has been commenced in connection with this matter.  We anticipate that resolution of this matter will result in civil or administrative penalties of an undetermined amount and require us to undertaketerms by mitigating corrective actions which may increase our development and/or operating costs.actions.  We do not believe that any penalties or corrective action expenditures that may result from this matter will have a material adverse effect on our financial position, results of operation or cash flows.

Item 1A. Risk Factors
We are subject to various risks and uncertainties in the course of our business.  There have been no material changes to the risk factors under Item 1A. Risk Factors in our 20152016 Annual Report on Form 10-K.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
The following table provides information about repurchases by Marathon Oil of its common stock during the quarter ended June 30, 2016.2017.
 Total Number of Average Price 
Total Number of
Shares Purchased
as Part of
Publicly Announced
 
Approximate Dollar
Value of Shares that
May Yet Be
Purchased Under the
Period
Shares Purchased (a)
 Paid per Share  Plans or Programs Plans or Programs
04/01/16 - 04/30/16103,922
 $10.97 
 n/a
05/01/16 - 05/31/16141,243
 13.56
 
 n/a
06/01/16 - 06/30/16486
 13.00
 
 n/a
Total245,651
 $12.46 
  
Period
Total Number of
Shares
Purchased(a)
 
Average
Price Paid
per Share
 
Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs(b)
 
Approximate
Dollar Value of
Shares that May
Yet Be Purchased
Under the Plans
or Programs(b)
04/01/17 - 04/30/1766,785
 $16.23 
 $1,500,285,529
05/01/17 - 05/31/17123,405
 $14.83 
 $1,500,285,529
06/01/17 - 06/30/17493
 $13.18 
 $1,500,285,529
Total190,683
 $15.32 
  
(a) 
245,651190,683 shares of restricted stock were delivered by employees to Marathon Oil, upon vesting, to satisfy tax withholding requirements.
(b)
In January 2006, we announced a $2.0 billion share repurchase program. Our Board of directors subsequently increased the authorization for repurchases under the program by $500 million in January 2007, by $500 million in May 2007, by $2.0 billion in July 2007, and by $1.2 billion in December 2013, for a total authorized amount of $6.2 billion. The remaining share repurchase authorization as of June 30, 2017 is $1.5 billion. No repurchases were made under the program in the second quarter of 2017.
Item 6.  Exhibits
The information required by this Item 6 is set forth in the Exhibit Index accompanying this Form 10-Q.


SIGNATURES

 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
August 4, 20163, 2017 MARATHON OIL CORPORATION
   
 By:/s/ Gary E. Wilson
  Gary E. Wilson
  Vice President, Controller and Chief Accounting Officer
  (Duly Authorized Officer)


Exhibit Index
   Incorporated by Reference (File No. 001-05153, unless otherwise indicated)
Exhibit Number Exhibit DescriptionForm Exhibit Filing Date 
3.1 Restated Certificate of Incorporation of Marathon Oil Corporation10-Q 3.1 8/8/2013 
3.2 Marathon Oil Corporation By-laws (Amended and restated as of February 24, 2016)*      
3.3 Specimen of Common Stock Certificate10-K 3.3 2/28/2014 
4.1 Indenture, dated as of February 26, 2002, between Marathon Oil Corporation and The Bank of New York Trust Company, N.A., successor in interest to JPMorgan Chase Bank as Trustee, relating to senior debt securities of Marathon Oil Corporation. Pursuant to CFR 229.601(b)(4)(iii), instruments with respect to long-term debt issues have been omitted where the amount of securities authorized under such instruments does not exceed 10% of the total consolidated assets of Marathon Oil. Marathon Oil hereby agrees to furnish a copy of any such instrument to the SEC upon its request10-K 4.1 2/28/2014 
10.1 Marathon Oil Corporation 2016 Incentive Compensation Plan14A App. A 4/07/2016 
12.1 Computation of Ratio of Earnings to Fixed Charges*      
31.1 Certification of President and Chief Executive Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934*      
31.2 Certification of Executive Vice President and Chief Financial Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934*      
32.1 Certification of President and Chief Executive Officer pursuant to 18 U.S.C. Section 1350*      
32.2 Certification of Executive Vice President and Chief Financial Officer pursuant to 18 U.S.C. Section 1350*      
101.INS XBRL Instance Document*      
101.SCH XBRL Taxonomy Extension Schema*      
101.CAL XBRL Taxonomy Extension Calculation Linkbase*      
101.DEF XBRL Taxonomy Extension Definition Linkbase*      
101.LAB XBRL Taxonomy Extension Label Linkbase*      
101.PRE XBRL Taxonomy Extension Presentation Linkbase*      
* Filed herewith.      
   Incorporated by Reference (File No. 001-05153, unless otherwise indicated)
Exhibit Number Exhibit DescriptionForm Exhibit Filing Date 
3.1 10-Q 3.1 8/8/2013 
3.2 8-K 3.1 3/1/2016 
3.3 10-K 3.3 2/28/2014 
4.1 10-K 4.2 2/28/2014 
10.1 8-K 99.1 6/23/2017 
10.2* Incremental Commitment Supplement, dated as of July 11, 2017, to the Amended and Restated Credit Agreement dated as of May 28, 2014, as amended by the First Amendment dated as of May 5, 2015, supplemented by the Incremental Commitments Supplement dated as of March 4, 2016, and amended by the Second Amendment dated as of June 22, 2017, among Marathon Oil Corporation, as borrower, the lenders party thereto, The Royal Bank of Scotland Plc, as syndication agent, Citibank, N.A., Morgan Stanley Senior Funding, Inc. and The Bank of Nova Scotia, as documentation agents, and JPMorgan Chase Bank, N.A., as administrative agent.      
31.1* Certification of President and Chief Executive Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934      
31.2* Certification of Executive Vice President and Chief Financial Officer pursuant to Rule 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934      
32.1* Certification of President and Chief Executive Officer pursuant to 18 U.S.C. Section 1350      
32.2* Certification of Executive Vice President and Chief Financial Officer pursuant to 18 U.S.C. Section 1350      
101.INS* XBRL Instance Document      
101.SCH* XBRL Taxonomy Extension Schema      
101.CAL* XBRL Taxonomy Extension Calculation Linkbase      
101.DEF* XBRL Taxonomy Extension Definition Linkbase      
101.LAB* XBRL Taxonomy Extension Label Linkbase      
101.PRE* XBRL Taxonomy Extension Presentation Linkbase      
* Filed herewith.