Cover
Cover | 12 Months Ended |
Dec. 31, 2019shares | |
Cover [Abstract] | |
Document Type | 20-F |
Amendment Flag | false |
Document Period End Date | Dec. 31, 2019 |
Document Fiscal Year Focus | 2019 |
Document Fiscal Period Focus | FY |
Current Fiscal Year End Date | --12-31 |
Document Registration Statement | false |
Document Annual Report | true |
Document Transition Report | false |
Document Shell Company Report | false |
Entity File Number | 001-15128 |
Entity Registrant Name | UNITED MICROELECTRONICS CORP |
Entity Central Index Key | 0001033767 |
Entity Address, Country | TW |
Entity Address, Address Line One | No. 3 Li-Hsin Road II, Hsinchu Science Park |
Entity Well-known Seasoned Issuer | Yes |
Entity Voluntary Filers | No |
Entity Current Reporting Status | Yes |
Entity Interactive Data Current | Yes |
Entity Filer Category | Large Accelerated Filer |
Entity Emerging Growth Company | false |
Entity Shell Company | false |
Document Accounting Standard | International Financial Reporting Standards |
Entity Common Stock, Shares Outstanding | 11,724,318,715 |
Title of 12(b) Security | Common Shares |
Trading Symbol | UMC |
Security Exchange Name | NYSE |
Consolidated Balance Sheets
Consolidated Balance Sheets $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Current assets | |||
Cash and cash equivalents | $ 95,492,477 | $ 3,192,661 | $ 83,661,739 |
Financial assets at fair value through profit or loss, current | 722,794 | 24,166 | 528,450 |
Contract assets, current | 214,243 | 7,163 | 92,210 |
Notes receivable | 98 | 3 | 118 |
Accounts receivable, net | 25,514,883 | 853,055 | 23,735,989 |
Accounts receivable-related parties, net | 289,945 | 9,694 | 138,912 |
Other receivables | 654,466 | 21,881 | 708,432 |
Current tax assets | 26,220 | 877 | 20,856 |
Inventories, net | 21,714,802 | 726,005 | 18,203,119 |
Other current assets | 9,203,393 | 307,702 | 14,103,607 |
Total current assets | 153,833,321 | 5,143,207 | 141,193,432 |
Non-current assets | |||
Financial assets at fair value through profit or loss, noncurrent | 13,298,679 | 444,623 | 11,555,847 |
Financial assets at fair value through other comprehensive income, noncurrent | 14,723,232 | 492,251 | 11,585,477 |
Investments accounted for under the equity method | 9,564,517 | 319,777 | 7,948,413 |
Property, plant and equipment | 150,374,096 | 5,027,553 | 172,846,595 |
Right-of-use assets | 8,291,517 | 277,216 | 0 |
Intangible assets | 5,198,247 | 173,796 | 2,991,804 |
Deferred tax assets | 7,563,357 | 252,871 | 6,795,796 |
Prepayment for equipment | 217,906 | 7,285 | 661,402 |
Refundable deposits | 2,600,733 | 86,951 | 2,757,399 |
Other noncurrent assets | 596,088 | 19,929 | 4,261,064 |
Total non-current assets | 212,428,372 | 7,102,252 | 221,403,797 |
Total assets | 366,261,693 | 12,245,459 | 362,597,229 |
Current liabilities | |||
Short-term loans | 12,015,206 | 401,712 | 13,103,808 |
Contract liabilities, current | 988,115 | 33,036 | 932,371 |
Notes and accounts payable | 8,877,065 | 296,793 | 6,801,745 |
Other payables | 15,325,954 | 512,402 | 12,549,873 |
Payables on equipment | 3,031,184 | 101,343 | 4,008,142 |
Current tax liabilities | 1,089,608 | 36,430 | 2,059,172 |
Lease liabilities, current | 569,957 | 19,056 | 0 |
Current portion of long-term liabilities | 24,795,600 | 829,007 | 5,121,396 |
Other current liabilities | 6,262,604 | 209,382 | 5,440,345 |
Total current liabilities | 72,955,293 | 2,439,161 | 50,016,852 |
Non-current liabilities | |||
Contract liabilities, noncurrent | 482,080 | 16,118 | 0 |
Bonds payable | 18,687,591 | 624,794 | 38,878,947 |
Long-term loans | 29,200,299 | 976,272 | 28,204,054 |
Deferred tax liabilities | 2,221,230 | 74,264 | 1,979,509 |
Lease liabilities, noncurrent | 5,461,068 | 182,583 | 0 |
Net defined benefit liabilities, noncurrent | 4,025,373 | 134,583 | 4,167,174 |
Guarantee deposits | 196,110 | 6,557 | 612,903 |
Other noncurrent liabilities | 30,118,734 | 1,006,978 | 34,340,307 |
Total non-current liabilities | 90,392,485 | 3,022,149 | 108,182,894 |
Total liabilities | 163,347,778 | 5,461,310 | 158,199,746 |
Commitments and contingencies | |||
Capital | |||
Common stock - NT$10 par value Authorized: 26,000,000 thousand shares Issued: 12,424,319 thousand shares as of December 31, 2018 Issued: 11,724,319 thousand shares as of December 31, 2019 | 117,243,187 | 3,919,866 | 124,243,187 |
Capital collected in advance | 332,611 | 11,120 | 0 |
Additional paid-in capital | |||
Premiums | 34,404,110 | 1,150,254 | 36,278,383 |
Treasury stock transactions | 3,888,150 | 129,995 | 2,749,448 |
Transactions with noncontrolling interests | 587,627 | 19,647 | 572,325 |
Share-based payment | 214,455 | 7,170 | 178,401 |
Stock options - conversion right | 1,476,405 | 49,362 | 1,515,297 |
Other | 13,211 | 441 | 8,181 |
Retained earnings | |||
Legal reserve | 11,572,579 | 386,913 | 10,865,280 |
Special reserve | 14,513,940 | 485,254 | 0 |
Unappropriated earnings | 37,874,428 | 1,266,280 | 55,416,447 |
Other components of equity | |||
Exchange differences on translation of foreign operations | (8,936,550) | (298,781) | (5,681,389) |
Unrealized gains or losses on financial assets measured at fair value through other comprehensive income | (2,266,311) | (75,771) | (8,379,834) |
Gains or losses on hedging instruments | 0 | 0 | (2,058) |
Treasury stock | (8,413,992) | (281,310) | (13,832,953) |
Total equity attributable to the parent company | 202,503,850 | 6,770,440 | 203,930,715 |
Non-controlling interests | 410,065 | 13,709 | 466,768 |
Total equity | 202,913,915 | 6,784,149 | 204,397,483 |
Total liabilities and equity | $ 366,261,693 | $ 12,245,459 | $ 362,597,229 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parenthetical) - $ / shares | Dec. 31, 2019 | Dec. 31, 2018 |
Statement of financial position [abstract] | ||
Common stock, par value | $ 10 | $ 10 |
Common stock, shares authorized | 26,000,000,000 | 26,000,000,000 |
Common stock, shares issued | 11,724,319,000 | 12,424,319,000 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($)$ / shares | Dec. 31, 2019USD ($)$ / shares | Dec. 31, 2018TWD ($)$ / shares | Dec. 31, 2017TWD ($)$ / shares | |
Statement of comprehensive income [abstract] | ||||
Operating revenues | $ 148,201,641 | $ 4,954,919 | $ 151,252,571 | $ 149,284,706 |
Operating costs | (126,886,669) | (4,242,282) | (128,412,544) | (122,226,948) |
Gross profit | 21,314,972 | 712,637 | 22,840,027 | 27,057,758 |
Operating expenses | ||||
Sales and marketing expenses | (3,807,610) | (127,302) | (3,901,912) | (4,233,830) |
General and administrative expenses | (5,318,576) | (177,819) | (4,940,906) | (4,239,713) |
Research and development expenses | (11,860,244) | (396,531) | (13,025,139) | (13,669,589) |
Expected credit losses | (627,159) | (20,968) | (409,237) | 0 |
Subtotal | (21,613,589) | (722,620) | (22,277,194) | (22,143,132) |
Net other operating income and expenses | 5,182,162 | 173,258 | 5,116,884 | 1,653,695 |
Operating income | 4,883,545 | 163,275 | 5,679,717 | 6,568,321 |
Non-operating income and expenses | ||||
Other income | 1,705,675 | 57,027 | 1,391,376 | 875,587 |
Other gains and losses | 1,166,729 | 39,008 | (1,128,290) | 994,092 |
Finance costs | (2,997,643) | (100,222) | (2,851,225) | (2,495,162) |
Share of profit or loss of associates and joint ventures | 115,329 | 3,856 | (616,665) | 157,837 |
Bargain purchase gain | 171,585 | 5,736 | 0 | 0 |
Bargain purchase gain in acquisition of additional shares of equity investees | 0 | 0 | 0 | 5,130 |
Exchange gain, net | 0 | 0 | 0 | 1,565,905 |
Exchange loss, net | (238,624) | (7,978) | (356,993) | 0 |
Subtotal | (76,949) | (2,573) | (3,561,797) | 1,103,389 |
Income from continuing operations before income tax | 4,806,596 | 160,702 | 2,117,920 | 7,671,710 |
Income tax benefit (expense) | (230,346) | (7,701) | 1,129,877 | (992,481) |
Net income | 4,576,250 | 153,001 | 3,247,797 | 6,679,229 |
Items that will not be reclassified subsequently to profit or loss | ||||
Remeasurements of defined benefit pension plans | 106,403 | 3,557 | (55,060) | (184,186) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income | 5,486,209 | 183,424 | 1,454,018 | 0 |
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss | 0 | 0 | (2,572) | 0 |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss | 899,025 | 30,058 | (103,319) | 1,221 |
Income tax related to items that will not be reclassified subsequently | (457,619) | (15,300) | (358,296) | 31,311 |
Subtotal | 6,034,018 | 201,739 | 934,771 | (151,654) |
Items that may be reclassified subsequently to profit or loss | ||||
Exchange differences on translation of foreign operations | (3,277,938) | (109,593) | (47,009) | (5,975,203) |
Unrealized gains or losses on available-for-sale financial assets | 0 | 0 | 0 | 581,439 |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss | 15,393 | 515 | (23,966) | 706,977 |
Income tax related to items that may be reclassified subsequently | 6,106 | 204 | (28,186) | 23,908 |
Subtotal | (3,256,439) | (108,874) | (99,161) | (4,662,879) |
Total other comprehensive income (loss), net of tax | 2,777,579 | 92,865 | 835,610 | (4,814,533) |
Total comprehensive income | 7,353,829 | 245,866 | 4,083,407 | 1,864,696 |
Net income (loss) attributable to: | ||||
Stockholders of the parent | 8,155,097 | 272,655 | 7,677,735 | 9,676,698 |
Non-controlling interests | (3,578,847) | (119,654) | (4,429,938) | (2,997,469) |
Net income | 4,576,250 | 153,001 | 3,247,797 | 6,679,229 |
Total comprehensive income (loss) attributable to: | ||||
Stockholders of the parent | 10,947,889 | 366,028 | 8,617,239 | 4,973,766 |
Non-controlling interests | (3,594,060) | (120,162) | (4,533,832) | (3,109,070) |
Total comprehensive income | $ 7,353,829 | $ 245,866 | $ 4,083,407 | $ 1,864,696 |
Earnings per share (NTD) | ||||
Earnings per share-basic | (per share) | $ 0.71 | $ 0.02 | $ 0.65 | $ 0.81 |
Earnings per share-diluted | (per share) | $ 0.65 | $ 0.02 | $ 0.60 | $ 0.75 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Equity $ in Thousands, $ in Thousands | TWD ($) | USD ($) | Collected In Advance [member]TWD ($) | Capital [member]Common stocks [member]TWD ($) | Additional paid-in capital [member]TWD ($) | Legal reserve [member]TWD ($) | Special reserve [member]TWD ($) | Unappropriated earnings [member]TWD ($) | Exchange differences on translation of foreign operations [member]TWD ($) | Reserve of gains and losses on financial assets measured at fair value through other comprehensive income [member]TWD ($) | Unrealized gain or losses on available-for-sale financial assets [member]TWD ($) | Reserve of cash flow hedges [member]TWD ($) | Treasury stock [member]TWD ($) | Equity attributable to the parent company [member]TWD ($) | Non-controlling interests [member]TWD ($) |
Balance at Dec. 31, 2016 | $ 214,946,374 | $ 126,243,187 | $ 41,626,106 | $ 9,070,841 | $ 43,528,660 | $ 81,553 | $ 5,127,682 | $ (12,893,384) | $ 212,784,645 | $ 2,161,729 | |||||
Appropriation and distribution of retained earnings | |||||||||||||||
Legal reserve | 0 | 0 | 0 | 831,566 | (831,566) | 0 | 0 | 0 | 0 | 0 | |||||
Cash dividends | (6,112,159) | 0 | 0 | 0 | (6,112,159) | 0 | 0 | 0 | (6,112,159) | 0 | |||||
Net income (loss) | 6,679,229 | 0 | 0 | 0 | 9,676,698 | 0 | 0 | 0 | 9,676,698 | (2,997,469) | |||||
Other comprehensive income (loss), net of tax | (4,814,533) | 0 | 0 | 0 | (151,654) | (5,770,763) | 1,219,485 | 0 | (4,702,932) | (111,601) | |||||
Total comprehensive income | 1,864,696 | 0 | 0 | 0 | 9,525,044 | (5,770,763) | 1,219,485 | 0 | 4,973,766 | (3,109,070) | |||||
Share of changes in net assets of associates and joint ventures accounted for using equity method | (3,978) | 0 | (3,978) | 0 | 0 | 0 | 0 | 0 | (3,978) | 0 | |||||
Disposal of subsidiaries | 0 | ||||||||||||||
Changes in subsidiaries' ownership | (2,042,442) | 0 | (134,050) | 0 | (909,241) | 0 | 0 | 0 | (1,043,291) | (999,151) | |||||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | 110,164 | 0 | 121,340 | 0 | 0 | 0 | 0 | (11,176) | 110,164 | 0 | |||||
Others | 858,343 | 0 | 0 | 0 | (2,044,957) | 0 | 0 | 0 | (2,044,957) | 2,903,300 | |||||
Balance at Dec. 31, 2017 | 209,620,998 | 126,243,187 | 41,609,418 | 9,902,407 | 43,155,781 | (5,689,210) | $ 0 | 6,347,167 | $ 0 | (12,904,560) | 208,664,190 | 956,808 | |||
Impact of retroactive applications at Dec. 31, 2017 | 1,394,943 | 0 | 0 | 0 | 17,065,856 | 3,088 | (9,328,431) | (6,347,167) | 0 | 0 | 1,393,346 | 1,597 | |||
Adjusted balance at Dec. 31, 2017 | 211,015,941 | 126,243,187 | 41,609,418 | 9,902,407 | 60,221,637 | (5,686,122) | (9,328,431) | 0 | 0 | (12,904,560) | 210,057,536 | 958,405 | |||
Appropriation and distribution of retained earnings | |||||||||||||||
Legal reserve | 0 | 0 | 0 | 962,873 | (962,873) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
Cash dividends | (8,557,023) | 0 | 0 | 0 | (8,557,023) | 0 | 0 | 0 | 0 | 0 | (8,557,023) | 0 | |||
Net income (loss) | 3,247,797 | 0 | 0 | 0 | 7,677,735 | 0 | 0 | 0 | 0 | 0 | 7,677,735 | (4,429,938) | |||
Other comprehensive income (loss), net of tax | 835,610 | 0 | 0 | 0 | (22,341) | 4,733 | 959,170 | 0 | (2,058) | 0 | 939,504 | (103,894) | |||
Total comprehensive income | 4,083,407 | 0 | 0 | 0 | 7,655,394 | 4,733 | 959,170 | 0 | (2,058) | 0 | 8,617,239 | (4,533,832) | |||
Share-based payment transaction | 2,899,669 | 0 | 696,226 | 0 | 0 | 0 | 0 | 0 | 0 | 2,203,443 | 2,899,669 | 0 | |||
Treasury stock acquired | (6,261,018) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (6,261,018) | (6,261,018) | 0 | |||
Treasury stock cancelled | 0 | (2,000,000) | (1,129,182) | 0 | 0 | 0 | 0 | 0 | 0 | 3,129,182 | 0 | 0 | |||
Share of changes in net assets of associates and joint ventures accounted for using equity method | 10,338 | 0 | 10,338 | 0 | 10,573 | 0 | (10,573) | 0 | 0 | 0 | 10,338 | 0 | |||
Disposal of subsidiaries | (7,074) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (7,074) | |||
Changes in subsidiaries' ownership | (753,885) | 0 | 39 | 0 | (475,311) | 0 | 0 | 0 | 0 | 0 | (475,272) | (278,613) | |||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | 163,839 | 0 | 163,839 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 163,839 | 0 | |||
Others | 1,803,289 | 0 | (48,643) | 0 | (2,475,950) | 0 | 0 | 0 | 0 | 0 | (2,524,593) | 4,327,882 | |||
Balance at Dec. 31, 2018 | 204,397,483 | $ 0 | 124,243,187 | 41,302,035 | 10,865,280 | $ 0 | 55,416,447 | (5,681,389) | (8,379,834) | 0 | (2,058) | (13,832,953) | 203,930,715 | 466,768 | |
Impact of retroactive applications at Dec. 31, 2018 | (24,362) | 0 | 0 | (10,427) | 0 | 0 | 0 | (13,935) | 0 | 0 | 0 | (24,362) | 0 | ||
Adjusted balance at Dec. 31, 2018 | 204,373,121 | 0 | 124,243,187 | 41,291,608 | 10,865,280 | 0 | 55,416,447 | (5,695,324) | (8,379,834) | (2,058) | (13,832,953) | 203,906,353 | 466,768 | ||
Appropriation and distribution of retained earnings | |||||||||||||||
Legal reserve | 0 | 0 | 0 | 0 | 707,299 | 0 | (707,299) | 0 | 0 | 0 | 0 | 0 | 0 | ||
Special reserve | 0 | 0 | 0 | 0 | 0 | 14,513,940 | (14,513,940) | 0 | 0 | 0 | 0 | 0 | 0 | ||
Cash dividends | (6,916,105) | 0 | 0 | 0 | 0 | 0 | (6,916,105) | 0 | 0 | 0 | 0 | (6,916,105) | 0 | ||
Net income (loss) | 4,576,250 | $ 153,001 | 0 | 0 | 0 | 0 | 0 | 8,155,097 | 0 | 0 | 0 | 0 | 8,155,097 | (3,578,847) | |
Other comprehensive income (loss), net of tax | 2,777,579 | 92,865 | 0 | 0 | 0 | 0 | 0 | 84,744 | (3,241,226) | 5,949,274 | 0 | 0 | 2,792,792 | (15,213) | |
Total comprehensive income | 7,353,829 | 245,866 | 0 | 0 | 0 | 0 | 0 | 8,239,841 | (3,241,226) | 5,949,274 | 0 | 0 | 10,947,889 | (3,594,060) | |
Share-based payment transaction | 377,004 | 0 | 0 | 377,004 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 377,004 | 0 | ||
Conversion of convertible bonds | 463,415 | 332,611 | 0 | 130,804 | 0 | 0 | 0 | 0 | $ 0 | 0 | 0 | 463,415 | 0 | ||
Treasury stock acquired | (2,859,498) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (2,859,498) | (2,859,498) | 0 | ||
Treasury stock cancelled | 0 | 0 | (7,000,000) | (1,387,127) | 0 | 0 | 0 | 0 | 0 | 0 | 8,387,127 | 0 | 0 | ||
Share of changes in net assets of associates and joint ventures accounted for using equity method | 14,123 | 0 | 0 | 14,123 | 0 | 0 | 387,654 | 0 | (387,654) | 0 | 0 | 14,123 | 0 | ||
Disposal of subsidiaries | 0 | ||||||||||||||
Changes in subsidiaries' ownership | 3,639 | 0 | 0 | 1,179 | 0 | 0 | (22,280) | 0 | 0 | 0 | 0 | (21,101) | 24,740 | ||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | 32,241 | 0 | 0 | 140,909 | 0 | 0 | 0 | 0 | 0 | 0 | (108,668) | 32,241 | 0 | ||
Disposal of equity instruments investments measured at fair value through other comprehensive income | 0 | 0 | 0 | 0 | 0 | 0 | (551,903) | 0 | 551,903 | 0 | 0 | 0 | 0 | ||
Others | 72,146 | 0 | 0 | 15,458 | 0 | 0 | (3,457,987) | 0 | 0 | 2,058 | 0 | (3,440,471) | 3,512,617 | ||
Balance at Dec. 31, 2019 | $ 202,913,915 | $ 6,784,149 | $ 332,611 | $ 117,243,187 | $ 40,583,958 | $ 11,572,579 | $ 14,513,940 | $ 37,874,428 | $ (8,936,550) | $ (2,266,311) | $ 0 | $ (8,413,992) | $ 202,503,850 | $ 410,065 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Cash flows from operating activities: | ||||
Net income before tax | $ 4,806,596 | $ 160,702 | $ 2,117,920 | $ 7,671,710 |
Adjustments to reconcile net income before tax to net cash provided by operating activities: | ||||
Depreciation | 47,172,881 | 1,577,161 | 49,948,589 | 50,965,120 |
Amortization | 2,216,654 | 74,111 | 2,100,130 | 2,133,726 |
Expected credit losses | 627,159 | 20,968 | 409,237 | 0 |
Bad debt reversal | 0 | 0 | 0 | (1,752) |
Net (gain) loss of financial assets and liabilities at fair value through profit or loss | (1,279,931) | (42,793) | 1,167,735 | (598,270) |
Interest expense | 2,933,815 | 98,088 | 2,768,672 | 2,406,872 |
Interest income | (994,061) | (33,235) | (789,001) | (353,159) |
Dividend income | (711,614) | (23,792) | (602,375) | (522,428) |
Share-based payment | 366,186 | 12,243 | 695,669 | 0 |
Share of (profit) loss of associates and joint ventures | (115,329) | (3,856) | 616,665 | (157,837) |
Gain on disposal of property, plant and equipment | (43,036) | (1,439) | (136,743) | (82,397) |
Gain on disposal of other assets | 0 | 0 | 0 | (6,601) |
Loss (gain) on disposal of investments | 16,293 | 545 | 19,286 | (1,269,369) |
Impairment loss on financial assets | 0 | 0 | 0 | 950,335 |
Impairment loss on non-financial assets | 118,134 | 3,950 | 46,225 | 0 |
Exchange (gain) loss on financial assets and liabilities | 206,612 | 6,907 | 1,217,590 | (2,432,098) |
Bargain purchase gain in acquisition of additional shares of equity investees | 0 | 0 | 0 | (5,130) |
Bargain purchase gain | (171,585) | (5,736) | 0 | 0 |
Amortization of deferred government grants | (4,062,148) | (135,812) | (3,885,722) | (1,469,616) |
Income and expense adjustments | 46,280,030 | 1,547,310 | 53,575,957 | 49,557,396 |
Changes in operating assets and liabilities: | ||||
Financial assets and liabilities at fair value through profit or loss | (594,847) | (19,888) | 789,666 | 520,335 |
Contract assets | (126,340) | (4,224) | (357,515) | 0 |
Notes receivable and accounts receivable | 439,400 | 14,691 | (1,382,668) | 1,587,562 |
Other receivables | 67,347 | 2,251 | 618,317 | (261,834) |
Inventories | (1,370,249) | (45,812) | (46,497) | (1,565,132) |
Other current assets | 5,769,041 | 192,880 | 743,519 | (4,397,764) |
Contract fulfillment costs | 8,054 | 269 | (448,933) | 0 |
Contract liabilities | 69,329 | 2,318 | (3,020,517) | 0 |
Notes and accounts payable | (739,066) | (24,710) | 257,044 | (185,907) |
Other payables | 511,244 | 17,092 | (332,290) | 727,300 |
Other current liabilities | 796,243 | 26,621 | 215,062 | 1,803,309 |
Net defined benefit liabilities | (35,398) | (1,183) | (26,405) | (14,562) |
Other noncurrent liabilities | (3,240) | (108) | 0 | (209,250) |
Cash generated from operations | 55,878,144 | 1,868,209 | 52,702,660 | 55,233,163 |
Interest received | 973,241 | 32,539 | 666,774 | 329,194 |
Dividend received | 818,691 | 27,372 | 782,157 | 584,612 |
Interest paid | (2,147,320) | (71,793) | (2,221,301) | (1,905,718) |
Income tax paid | (618,608) | (20,682) | (995,314) | (1,766,856) |
Net cash provided by operating activities | 54,904,148 | 1,835,645 | 50,934,976 | 52,474,395 |
Cash flows from investing activities: | ||||
Acquisition of financial assets at fair value through profit or loss | (354,249) | (11,844) | (593,563) | (138,022) |
Proceeds from disposal of financial assets at fair value through profit or loss | 229,553 | 7,675 | 1,061 | 18,789 |
Proceeds from disposal of equity instruments investments measured at fair value through other comprehensive income or loss | 44,466 | 1,487 | 0 | 0 |
Acquisition of available-for-sale financial assets | 0 | 0 | 0 | (998,216) |
Proceeds from disposal of available-for-sale financial assets | 0 | 0 | 0 | 2,159,636 |
Acquisition of financial assets measured at cost | 0 | 0 | 0 | (14,419) |
Proceeds from disposal of financial assets measured at cost | 0 | 0 | 0 | 361 |
Acquisition of investments accounted for under the equity method | (730,000) | (24,407) | (840,000) | (204,280) |
Proceeds from disposal of investments accounted for under the equity method | 5,970 | 200 | 0 | 0 |
Increase in prepayment for investments | (17,974) | (601) | 0 | (17,200) |
Proceeds from capital reduction and liquidation of investments | 32,214 | 1,077 | 61,800 | 2,101,791 |
Acquisition of subsidiary (net of cash acquired) | (12,800,981) | (427,983) | 0 | 0 |
Disposal of subsidiary | 32,017 | 1,070 | (9,813) | 0 |
Derecognition of hedging financial assets and liabilities | 0 | 0 | (2,572) | 0 |
Acquisition of property, plant and equipment | (16,518,483) | (552,273) | (19,590,075) | (44,236,276) |
Proceeds from disposal of property, plant and equipment | 45,042 | 1,506 | 200,991 | 119,613 |
Increase in refundable deposits | (257,909) | (8,623) | (1,674,984) | (109,627) |
Decrease in refundable deposits | 441,013 | 14,745 | 691,807 | 424,706 |
Acquisition of intangible assets | (2,443,593) | (81,698) | (838,675) | (1,283,938) |
Government grants related to assets acquisition | 617,685 | 20,651 | 7,129,770 | 6,755,920 |
Increase in other noncurrent assets | (15,074) | (504) | (36,440) | (30,294) |
Decrease in other noncurrent assets | 8,786 | 294 | 1,090 | 35,864 |
Net cash used in investing activities | (31,681,517) | (1,059,228) | (15,499,603) | (35,415,592) |
Cash flows from financing activities: | ||||
Increase in short-term loans | 25,732,933 | 860,345 | 22,021,005 | 48,804,321 |
Decrease in short-term loans | (26,726,656) | (893,569) | (34,309,253) | (42,925,604) |
Cash payments for the principal portion of the lease liability | (633,488) | (21,180) | 0 | 0 |
Proceeds from bonds issued | 0 | 0 | 0 | 13,700,000 |
Bonds issuance costs | 0 | 0 | 0 | (15,785) |
Redemption of bonds | (2,500,000) | (83,584) | (7,500,000) | (7,500,000) |
Proceeds from long-term loans | 11,449,930 | 382,813 | 758,500 | 12,000,708 |
Repayments of long-term loans | (7,572,939) | (253,191) | (2,638,697) | (7,602,596) |
Increase in guarantee deposits | 269,415 | 9,008 | 213,432 | 194,555 |
Decrease in guarantee deposits | (17,146) | (573) | (125,301) | (84,192) |
Cash dividends | (6,911,058) | (231,062) | (8,557,684) | (6,103,195) |
Treasury stock acquired | (2,972,243) | (99,373) | (6,148,273) | 0 |
Treasury stock sold to employees | 0 | 0 | 2,204,000 | 0 |
Acquisition of non-controlling interests | 0 | 0 | 0 | (1,308,614) |
Change in non-controlling interests | 3,388 | 113 | 597,385 | 1,994 |
Others | 10,818 | 362 | 0 | 0 |
Net cash provided by (used in) financing activities | (9,867,046) | (329,891) | (33,484,886) | 9,161,592 |
Effect of exchange rate changes on cash and cash equivalents | (1,524,847) | (50,981) | 36,680 | (2,124,804) |
Net increase in cash and cash equivalents | 11,830,738 | 395,545 | 1,987,167 | 24,095,591 |
Cash and cash equivalents at beginning of year | 83,661,739 | 2,797,116 | 81,674,572 | 57,578,981 |
Cash and cash equivalents at end of year | $ 95,492,477 | $ 3,192,661 | $ 83,661,739 | $ 81,674,572 |
History and Organization
History and Organization | 12 Months Ended |
Dec. 31, 2019 | |
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History and Organization | 1. HISTORY AND ORGANIZATION United Microelectronics Corporation (UMC) was incorporated in Republic of China (R.O.C.) in May 1980 and commenced operations in April 1982. UMC is a full service semiconductor wafer foundry, and provides a variety of services to satisfy customer needs. UMC’s ordinary shares were publicly listed on the Taiwan Stock Exchange (TWSE) in July 1985 and its American Depositary Shares (ADSs) were listed on the New York Stock Exchange (NYSE) in September 2000. The address of its registered office and principal place of business is No. 3, Li-Hsin |
Date and Procedures of Authoriz
Date and Procedures of Authorization of Financial Statements for Issue | 12 Months Ended |
Dec. 31, 2019 | |
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Date and Procedures of Authorization of Financial Statements for Issue | 2. DATE AND PROCEDURES OF AUTHORIZATION OF FINANCIAL STATEMENTS FOR ISSUE The consolidated financial statements of the Company were approved and authorized for issue by the audit committee of the Board of Directors on April 2 7 |
New Accounting Pronouncement un
New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) | 12 Months Ended |
Dec. 31, 2019 | |
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New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) | 3. NEW ACCOUNTING PRONOUNCEMENT UNDER INTERNATIONAL FINANCIAL REPORTING STANDARDS (IFRSs) (1) The Company applied International Financial Reporting Standards, International Accounting Standards, and Interpretations issued, revised or amended which have been issued by the International Accounting Standards Board (IASB) and become effective for annual periods beginning on or after January 1, 2019. Apart from the impact of the standards and interpretations which is described below, all other standards and interpretations have no material impact on the Company’s financial position and performance. a. IFRS 16 “Leases” (IFRS 16) IFRS 16 replaces IAS 17 “Leases” (IAS 17), IFRIC 4 “Determining whether an Arrangement contains a Lease” (IFRIC 4), SIC 15 “Operating Leases-Incentives” and SIC 27 “Evaluating the Substance of Transactions in the Legal Form of a Lease” for annual periods beginning on or after January 1, 2019. The Company elected not to reassess whether a contract was, or contained, a lease at the date of initial application (January 1, 2019) in accordance with the transition provision in IFRS 16. The Company was permitted to apply IFRS 16 to contracts that were previously identified as leases applying IAS 17 and IFRIC 4. The Company elected not to restate comparative information and applied the standard retrospectively only to contracts that were not completed at the date of initial application in accordance with the transition provision in IFRS 16. The Company recognized the cumulative effect of initially applying IFRS 16 on January 1, 2019. As the Company only has operating leases, the impact arising from the adoption of IFRS 16 are summarized as follows: i. For leases that were classified as operating leases applying IAS 17, lease payments were recognized as expenses on a straight-line basis over the lease terms. Upon adoption of IFRS 16, the Company measured and recognized those leases, except for short-term or low-value lease-by-lease right-of-use right-of-use paid-in ii. In accordance with the transition provision in IFRS 16, the Company used the following practical expedients on a lease-by-lease (i) Apply a single discount rate to a portfolio of leases with reasonably similar characteristics. (ii) Elect to account in the same way as short-term leases to leases for which the lease term ends within 12 months of January 1, 2019. (iii) Use hindsight, such as in determining the lease term if the contract contains options to extend or terminate the lease. iii. The difference between the present value of operating lease commitments under IAS 17 as of December 31, 2018 discounted at the lessee’s incremental borrowing rate and lease liabilities recognized on January 1, 2019 is explained as below: Operating lease commitments under IAS 17 as of December 31, 2018 $ 7,408,369 Present value discounted at the incremental borrowing rate on January 1, 2019 $ 5,997,551 Add: An extension option reasonably certain to be exercised 8,906 Lease liabilities as of January 1, 2019 $ 6,006,457 (2) The Company has not adopted the following new, revised or amended IFRSs that have been issued by the IASB but not yet effective: No. The projects of Standards or Interpretations Effective for annual periods beginning on or after IFRS 10 and IAS 28 Sale or Contribution of Assets between an Investor and its Associate or Joint Venture - Amendments to IFRS 10 and IAS 28 Subject to IASB’s announcement IFRS 17 Insurance Contracts January 1, 2021 IFRS 3 Definition of a Business - Amendments to IFRS 3 January 1, 2020 IAS 1 and IAS 8 Definition of Material - Amendments to IAS 1 and IAS 8 January 1, 2020 IFRS 9, IAS 39 and IFRS 7 Interest Rate Benchmark Reform - Amendments to IFRS 9, IAS 39 and IFRS 7 January 1, 2020 IAS 1 Classification of Liabilities as Current or Non-current-Amendments January 1, 2022 (3) The potential effects of adopting the standards or interpretations issued by IASB on the Company’s financial statements in future periods are summarized as below: a. IFRS 10 “Consolidated Financial Statements” (IFRS 10) and IAS 28 “Investments in Associates and Joint Ventures” (IAS 28)—Sale or Contribution of Assets between an Investor and its Associate or Joint Venture (Amendment) The amendments address the inconsistency between the requirements in IFRS 10 and IAS 28, in dealing with the loss of control of a subsidiary that is contributed to an associate or a joint venture. IAS 28 restricts gains and losses arising from contributions of non-monetary b. IFRS 3 “Business Combinations”—Definition of a Business (Amendment) The amendments clarify the definition of a business in IFRS 3. The amendments are intended to assist entities to determine whether a transaction should be accounted for as a business combination or as an asset acquisition. IFRS 3 continues to adopt a market participant’s perspective to determine whether an acquired set of activities and assets is a business. The amendments clarify the minimum requirements for a business, add guidance to help entities assess whether an acquired process is substantive, narrow the definitions of a business and of outputs, etc. c. IAS 1 “Presentation of Financial Statements” (IAS 1) and IAS 8 “Accounting Policies, Changes in Accounting Estimates and Errors”—Definition of Material (Amendment) The main amendment is to clarify a new definition of material. It states that “information is material if omitting, misstating or obscuring it could reasonably be expected to influence decisions that the primary users of general purpose financial statements make on the basis of those financial statements, which provide financial information about a specific reporting entity.” The amendments clarify that materiality will depend on the nature or magnitude of information. An entity will need to assess whether the information, either individually or in combination with other information, is material in the context of the financial statements. d. IFRS 9 “Financial Instruments” (IFRS 9), IAS 39 “Financial Instruments: Recognition and Measurement” (IAS 39) and IFRS 7 “Financial Instruments: Disclosures” - Interest Rate Benchmark Reform (Amendment) The amendments include a number of exceptions, which apply to all hedging relationships that are directly affected by interest rate benchmark reform. A hedging relationship is directly affected if the interest rate benchmark reform gives rise to uncertainties about the timing or amount of benchmark-based cash flows of the hedged item or the hedging instrument. Hence, the entity shall apply the exceptions to all hedging relationships directly affected by the interest rate benchmark reform. The amendments include: i. highly probable requirement: When determining whether a forecast transaction is highly probable, an entity shall assume that the interest rate benchmark on which the hedged cash flows are based is not altered as a result of the interest rate benchmark reform. ii. prospective assessments: When performing prospective assessments, an entity shall assume that the interest rate benchmark on which the hedged item, hedged risk and/or hedging instrument are based is not altered as a result of the interest rate benchmark reform. iii. IAS 39 retrospective assessment: An entity is not required to undertake the IAS 39 retrospective assessment (i.e. the actual results of the hedge are within a range of 80~125%) for hedging relationships directly affected by the interest rate benchmark reform. iv. separately identifiable risk components: For hedges of a non-contractually The amendments also include the end of application of the exceptions requirements and the related disclosures requirements of the amendments. e. IAS 1 - Classification of Liabilities as Current or Non-current These are the amendments to paragraphs 69-76 non-current. The Company is currently evaluating the potential impact of the aforementioned standards and interpretations listed as item e to the Company’s financial position and performance, and the related impact will be disclosed when the evaluation is completed. The rest of the standards listed are not expected to have material impact on the Company’s financial position and performance. |
Summary of Significant Accounti
Summary of Significant Accounting Policies | 12 Months Ended |
Dec. 31, 2019 | |
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Summary of Significant Accounting Policies | 4. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (1) Statement of Compliance The Company’s consolidated financial statements were prepared in accordance with IFRSs, including International Financial Reporting Standards, International Accounting Standards, IFRIC Interpretations and SIC Interpretations, as issued by IASB. (2) Basis of Preparation The consolidated financial statements have been prepared on a historical cost basis, except for financial instruments measured at fair value. (3) General Description of Reporting Entity a. Principles of consolidation Subsidiaries are fully consolidated from the date of acquisition (the date on which the Company obtains control), and continue to be consolidated until the date that such control ceases. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The financial statements of the subsidiaries are prepared for the same reporting period as the parent company, using consistent accounting policies. All intra-group balances, transactions, unrealized gains and losses and dividends resulting from intra-group transactions are eliminated in full. A change in the ownership interest of a subsidiary, without a change of control, is accounted for as an equity transaction. Total comprehensive income of subsidiaries is attributed to the stockholders of the parent and to the non-controlling non-controlling If the Company loses control over a subsidiary, the Company derecognizes the assets and liabilities of the subsidiary, as well as any non-controlling non-controlling b. The consolidated entities as of December 31, 2018 and 2019 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2018 2019 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED MICROELECTRONICS (EUROPE) B.V. Marketing support activities 100.00 100.00 UMC UMC CAPITAL CORP. Investment holding 100.00 100.00 UMC GREEN EARTH LIMITED (GE) Investment holding 100.00 100.00 UMC TLC CAPITAL CO., LTD. (TLC) Venture capital 100.00 100.00 UMC UMC INVESTMENT (SAMOA) LIMITED Investment holding 100.00 100.00 UMC FORTUNE VENTURE CAPITAL CORP. (FORTUNE) Consulting and planning for venture capital 100.00 100.00 UMC UMC GROUP JAPAN IC Sales 100.00 100.00 UMC UMC KOREA CO., LTD. Marketing support activities 100.00 100.00 UMC OMNI GLOBAL LIMITED (OMNI) Investment holding 100.00 100.00 UMC SINO PARAGON LIMITED Investment holding 100.00 100.00 UMC BEST ELITE INTERNATIONAL LIMITED (BE) Investment holding 100.00 100.00 UMC UNITED SEMICONDUCTOR JAPAN CO., LTD. Sales and manufacturing of integrated circuits — 100.00 UMC, FORTUNE and TLC NEXPOWER TECHNOLOGY CORP. (NEXPOWER) Sales and manufacturing of solar power batteries 93.36 93.36 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 78.47 80.49 UMC CAPITAL CORP. UMC CAPITAL (USA) Investment holding 100.00 100.00 TLC SOARING CAPITAL CORP. Investment holding 100.00 100.00 SOARING CAPITAL CORP. UNITRUTH ADVISOR (SHANGHAI) CO., LTD. Investment holding and advisory 100.00 100.00 GE UNITED MICROCHIP CORPORATION Investment holding 100.00 100.00 FORTUNE TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) Energy technical services 100.00 100.00 TERA ENERGY EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) Investment holding 100.00 100.00 EVERRICH-HK EVERRICH (SHANDONG) ENERGY CO., LTD. Solar engineering integrated design services 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (NEW YORK) Research and development 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 OMNI UMC TECHNOLOGY JAPAN CO., LTD. Semiconductor manufacturing technology development and consulting services 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 100.00 WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Sales and marketing service 100.00 100.00 NEXPOWER SOCIALNEX ITALIA 1 S.R.L. Photovoltaic power plant 100.00 — BE INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) Investment holding 100.00 100.00 INFOSHINE OAKWOOD ASSOCIATES LIMITED (OAKWOOD) Investment holding 100.00 100.00 OAKWOOD HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) Sales and manufacturing of integrated circuits 98.14 98.14 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. Integrated circuits design services 100.00 100.00 UNITED MICROCHIP CORPORATION and HJ UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) Sales and manufacturing of integrated circuits 65.22 65.22 (4) Business Combinations and Goodwill Business combinations are accounted for using the acquisition method. The consideration transferred, the identifiable assets acquired and liabilities assumed are measured at the acquisition date fair value. For the components of non-controlling non-controlling When the Company acquires a business, it assesses the assets acquired and liabilities assumed for appropriate classification and designation in accordance with the contractual terms, economic circumstances and pertinent conditions as at the acquisition date. If the business combination is achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree is remeasured at fair value as at the acquisition date through profit or loss. Any contingent consideration to be transferred by the acquirer will be recognized at fair value at the acquisition date. Subsequent changes to the fair value of the contingent consideration, which is deemed to be an asset or liability, will be recognized in accordance with IFRS 9 (before January 1, 2018: IAS 39), either in profit or loss or other comprehensive income. If the contingent consideration is classified as equity, it should not be remeasured until it is finally settled within equity. Goodwill is initially measured at cost, being the excess of the aggregate of the consideration transferred, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree and the amount recognized for non-controlling non-controlling After initial recognition, goodwill is measured at cost less any accumulated impairment losses. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to each cash-generating unit (CGU) that is expected to benefit from the combination, irrespective of whether other assets or liabilities of the acquiree are assigned to those units. Each unit or groups of units to which the goodwill is so allocated represents the lowest level within the Company at which the goodwill is monitored for internal management purposes and cannot be larger than an operating segment before aggregation. Where goodwill forms part of a CGU and part of the operation within that unit is disposed, the goodwill associated with the operation disposed is included in the carrying amount of the operation. Goodwill disposed in this circumstance is measured based on the relative values of the operation disposed and the portion of the CGU retained. (5) Foreign Currency Transactions The Company’s consolidated financial statements are presented in New Taiwan Dollars (NTD), which is also the parent company’s functional currency. Each entity in the Company determines its own functional currency and items included in the financial statements of each entity are measured using that functional currency. Transactions in foreign currencies are initially recorded by the Company’s entities at their respective functional currency rates prevailing at the transaction date. Monetary assets and liabilities denominated in foreign currencies are translated into functional currency at the closing rates of exchange at the reporting date. Non-monetary Non-monetary All exchange differences arising on the settlement of monetary items or on translating monetary items are taken to profit or loss in the period in which they arise except for the following: a. Exchange differences arising from foreign currency borrowings for an acquisition of a qualifying asset to the extent that they are regarded as an adjustment to interest costs are included in the borrowing costs that are eligible for capitalization. b. Foreign currency derivatives within the scope of IFRS 9 (before January 1, 2018: IAS 39) are accounted for based on the accounting policy for financial instruments. c. Exchange differences arising on a monetary item that is part of a reporting entity’s net investment in a foreign operation are recognized initially in other comprehensive income and reclassified from equity to profit or loss upon disposal of such investment. When a gain or loss on a non-monetary non-monetary (6) Translation of Foreign Currency Financial Statements The assets and liabilities of foreign operations are translated into NTD at the closing rate of exchange prevailing at the reporting date and their income and expenses are translated at an average exchange rate for the period. The exchange differences arising on the translation are recognized in other comprehensive income. On disposal of a foreign operation, the cumulative amount of the exchange differences relating to that foreign operation, recognized in other comprehensive income and accumulated in the separate component of equity, is reclassified from equity to profit or loss when the gain or loss on disposal is recognized. On partial disposal of a subsidiary that includes a foreign operation that does not result in a loss of control, the proportionate share of the cumulative amount of the exchange differences recognized in other comprehensive income is re-attributed non-controlling Any goodwill and any fair value adjustments to the carrying amounts of assets and liabilities arising from the acquisition of a foreign operation are treated as assets and liabilities of the foreign operation and expressed in its functional currency. (7) Convenience Translation into U.S. Dollars Translations of amounts from NTD into U.S. dollars (USD) for the reader’s convenience were calculated at the rate of USD1.00 to NTD29.91 on December 31, 2019 released by Board of Governors of the Federal Reserve System. No representation is made that the NTD amounts could have been, or could be, converted into USD at this rate. (8) Current and Non-Current Distinction An asset is classified as current when: a. the Company expects to realize the asset, or intends to sell or consume it, in its normal operating cycle; b. the Company holds the asset primarily for the purpose of trading; c. the Company expects to realize the asset within twelve months after the reporting period; or d. the asset is cash or a cash equivalent unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. All other assets are classified as non-current. A liability is classified as current when: a. the Company expects to settle the liability in normal operating cycle; b. the Company holds the liability primarily for the purpose of trading; c. the liability is due to be settled within twelve months after the reporting period; or d. the Company does not have an unconditional right to defer settlement of the liability for at least twelve months after the reporting date. Terms of a liability that could, at the option of the counterparty, result in its settlement by the issue of equity instruments do not affect its classification. All other liabilities are classified as non-current. (9) Cash Equivalents Cash equivalents are short-term, highly liquid investments that are readily convertible to known amounts of cash and with maturity dates that do not present significant risks of changes in value resulting from changes in interest rates, including time deposits with original maturities of three months or less and repurchase agreements collateralized by government bonds and corporate bonds. (10) Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instrument. Purchase or sale of financial assets and liabilities are recognized using trade date accounting. All financial assets are recognized initially at fair value plus, in the case of investments not at fair value through profit or loss, directly attributable costs. Financial assets at fair value through profit or loss are initially recognized at fair value, and transaction costs are expensed in the statement of comprehensive income. Financial Assets a. Classification and subsequent measurement 2017 The Company determines the classification of its financial assets at initial recognition. In accordance with IAS 39, financial assets of the Company are classified as financial assets at fair value through profit or loss, available-for-sale held-to-maturity i. Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss are comprised of financial assets held for trading and financial assets designated upon initial recognition at fair value through profit or loss. Financial assets acquired for the purpose of selling or repurchasing in the near term, and derivative financial instruments that are not designated as hedging instruments in hedge accounting are classified as financial assets at fair value through profit or loss. Financial assets at fair value through profit or loss are measured at fair value with changes in fair value recognized in profit or loss. ii. Available-for-sale Available-for-sale non-derivative available-for-sale held-to-maturity Available-for-sale available-for-sale iii. Held-to-maturity Non-derivative held-to-maturity After initial measurement, held-to-maturity iv. Notes, accounts and other receivables Notes and accounts receivable are creditors’ rights as a result of sales of goods or services. Other receivables are any receivable not classified as notes and accounts receivable. Notes, accounts and other receivables are initially measured and recognized at their fair values and subsequently measured at amortized cost using the effective interest method, less impairment losses. If the effect of discounting is immaterial, the short term notes, accounts and other receivables are measured at their nominal amount. 2018 and 2019 The Company determines the classification of its financial assets at initial recognition. In accordance with IFRS 9, financial assets of the Company are classified as financial assets at fair value through profit or loss, financial assets at fair value through other comprehensive income, and financial assets measured at amortized cost. i. Financial assets at fair value through profit or loss Financial assets that are not measured at amortized cost or at fair value through other comprehensive income are recognized initially at fair value and subsequently measured at fair value with changes in fair value recognized in profit or loss. ii Financial assets at fair value through other comprehensive income At initial recognition, the Company may make an irrevocable election to present in other comprehensive income subsequent changes in the fair value of an investment in an equity instrument that is not held for trading. When there is a disposal of such equity instrument, accumulated amounts presented in other comprehensive income are not subsequently transferred to profit or loss but are transferred directly to the retained earnings. The debt instruments are measured at fair value through other comprehensive income if both of the following conditions are met: (i) the financial asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets and (ii) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Subsequent changes in the fair value of such financial assets at fair value through other comprehensive income are recognized in other comprehensive income. Before derecognition, impairment gains or losses, interest revenue and foreign exchange gains and losses are recognized in profit or loss. When the financial assets are derecognized the cumulative gain or loss previously recognized in other comprehensive income is reclassified from other comprehensive income to profit or loss as a reclassification adjustment. iii. Financial assets measured at amortized cost The financial assets are measured at amortized cost (including cash and cash equivalent, notes, accounts and other receivables and other financial assets) if both of the following conditions are met. (i) the financial asset is held within a business model whose objective is to hold financial assets in order to collect contractual cash flows; and (ii) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Subsequent to initial recognition for financial assets measured at amortized cost, interest income, measured by the effective interest method amortization process, and impairment losses are recognized during circulation period. Gains and losses are recognized in profit or loss when the financial assets are derecognized. b. Derecognition of financial assets A financial asset is derecognized when: i. the contractual rights to receive cash flows from the asset have expired; ii. the Company has transferred assets and substantially all the risks and rewards of the asset have been transferred; or iii. the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset. 2017 On derecognition of a financial asset in its entirety, the difference between the carrying amount and the consideration received or to be received including any cumulative gain or loss that had been recognized in other comprehensive income is recognized in profit or loss. If the transferred asset is part of a larger financial asset and the part transferred qualifies for derecognition in its entirety, the Company allocates the previous carrying amount of the larger financial asset between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts on the date of the transfer. Any cumulative gain or loss that had been recognized in other comprehensive income is allocated between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts. The difference between the carrying amount allocated to the part derecognized and the sum of the consideration received for the part derecognized and any cumulative gain or loss allocated that had been recognized in other comprehensive income, is recognized in profit or loss. 2018 and 2019 On derecognition of a financial asset in its entirety, the difference between the carrying amount and the consideration received or to be received including any cumulative gain or loss that had been recognized in other comprehensive income is recognized in profit or loss (for debt instruments) or directly in retained earnings (for equity instruments). If the transferred asset is part of a larger financial asset and the part transferred qualifies for derecognition in its entirety, the Company allocates the previous carrying amount of the larger financial asset between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts on the date of the transfer. Any cumulative gain or loss that had been recognized in other comprehensive income is allocated between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts. The difference between the carrying amount allocated to the part derecognized and the sum of the consideration received for the part derecognized and any cumulative gain or loss allocated that had been recognized in other comprehensive income, is recognized in profit or loss or directly in retained earnings. c. Impairment policy 2017 The carrying amount of a financial asset is reduced as a result of impairment, except for accounts receivable for which the carrying amount is reduced through use of an allowance account. When an account receivable is deemed to be uncollectible, it is written off from the allowance account. i. Notes, accounts and other receivables The Company first assesses at each reporting date whether objective evidence of impairment exists for notes, accounts and other receivables that are individually significant. If there is objective evidence that an impairment loss has occurred, the amount of impairment loss is assessed individually. For notes, accounts and other receivables other than those mentioned above, the Company groups those assets with similar credit risk characteristics and collectively assesses them for impairment. If, in a subsequent period, the amount of the impairment loss decreases, and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed and recognized through profit or loss. The reversal shall not result in a carrying amount of notes, accounts and other receivables that exceeds what the amortized cost would have been had the impairment not been recognized at the date the impairment is reversed. ii. Other financial assets The Company assesses, at each reporting date, whether there is objective evidence that a financial asset or a group of financial assets is impaired. A financial asset or a group of financial assets is deemed to be impaired if, and only if, there is objective evidence of impairment as a result of one or more loss events that has occurred since the initial recognition of the asset (an incurred “loss event”) and that loss event has an impact on the estimated future cash flows of the individual financial asset or a group of financial assets. For the financial assets carried at amortized cost, the amount of the impairment loss is measured as the difference between the carrying amount and the present value of estimated future cash flows, discounted at the original effective interest rate. For equity investments classified as available-for-sale, available-for-sale 2018 and 2019 The Company measures, at each reporting date, an allowance for expected credit losses (ECLs) for debt instrument investments measured at fair value through other comprehensive income and financial assets measured at amortized cost by assessing reasonable and supportable information including forward-looking information. Where the credit risk on a financial asset has not increased significantly since initial recognition, the loss allowance is measured at an amount equal to 12-month For notes, accounts receivable and contract assets, the Company applies a simplified approach in calculating ECLs. Therefore, the Company does not track changes in credit risk, but instead recognizes a loss allowance based on lifetime ECLs at each reporting date. ECLs are measured based on the Company’s historical credit loss experience and customers’ current financial condition, adjusted for forward-looking factors, such as customers’ economic environment. Financial Liabilities a. Classification and subsequent measurement 2017 The Company classifies the instrument issued as a financial liability or an equity instrument in accordance with the substance of the contractual arrangement and the definitions of a financial liability and an equity instrument. i. Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. Gains or losses on the subsequent measurement including interest paid are recognized in profit or loss. ii. Financial liabilities carried at amortized cost Financial liabilities measured at amortized cost include interest bearing loans and borrowings that are subsequently measured using the effective interest method after initial recognition. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the effective interest method amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or transaction costs. 2018 and 2019 The Company classifies the instrument issued as a financial liability or an equity instrument in accordance with the substance of the contractual arrangement and the definitions of a financial liability and an equity instrument. i. Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. Excluding changes in own credit risk, gains or losses on the subsequent measurement including interest paid are recognized in profit or loss. ii. Financial liabilities measured at amortized cost Financial liabilities measured at amortized cost include interest bearing loans and borrowings that are subsequently measured using the effective interest method after initial recognition. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the effective interest method amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or transaction costs. b. Derecognition of financial liabilities A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified (whether or not attributable to the financial difficulty of the debtor), such an exchange or modification is treated as a derecognition of the original liability and the recognition of a new liability, and the difference in the respective carrying amounts and the consideration paid, including any non-cash (11) Hedge Accounting Cash flow hedges The Company manages exposures arising from foreign currency exchange risk. With the adoption of IFRS 9, the Company designates a hedging relationship between the hedging instrument and the hedged item with the existence of an economic relationship and determines the hedge ratio to meet the hedge effectiveness. The Company designates certain hedging instruments to partially hedge the foreign currency exchange rate risks associated with certain highly probable forecast transactions. The separate component of equity associated with the hedged item is adjusted to the lower of the following (in absolute amounts): a. the cumulative gain or loss on the hedging instrument from inception of the hedge; and b. the cumulative change in fair value (present value) of the expected future cash flows on the hedged item from inception of the hedge. The portion of the gain or loss on the hedging instrument that is determined to be an effective hedge is recognized in other comprehensive income, whereas the ineffective portion of the change in the fair value of the hedging instrument is recognized directly in profit or loss. If a hedge of a forecast transaction subsequently results in the recognition of a non-financial non-financial The Company prospectively discontinues hedge accounting only when the hedging relationship ceases to meet the qualifying criteria; for instance when the hedging instrument expires or is sold, terminated or exercised. (12) Inventories Inventories are accounted for on a perpetual basis. Raw materials are stated at actual purchase costs, while the work in process and finished goods are stated at standard costs and subsequently adjusted to weighted-average costs at the end of each month. The cost of work in progress and finished goods comprises raw materials, direct labor, other direct costs and related production overheads. Allocation of fixed production overheads to the costs of conversion is based on the normal capacity of the production facilities. Cost associated with underutilized capacity is expensed as incurred. Inventories are valued at the lower of cost and net realizable value item by item. Net realizable value is the estimated selling price in the ordinary course of business less the estimated costs of completion and the estimated costs necessary to make the sale. (13) Investments Accounted For Under the Equity Method The Company’s investments in associates and joint ventures are accounted for using the equity method other than those that meet the criteria to be classified as non-current An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of an entity, but is not control or joint control over those policies. A joint venture is a type of joint arrangement whereby the Company that has joint control of the arrangement has rights to the net assets of the joint venture. Joint control is the contractually agreed sharing of control of an arrangement where no single party controls the arrangement on its own, which exists only when decisions about the relevant activities require unanimous consent of the parties sharing control. Any difference between the acquisition cost and the Company’s share of the net fair value of the identifiable assets and liabilities of associates and joint ventures is accounted for as follows: a. Any excess of the acquisition cost over the Company’s share of the net fair value of the identifiable assets and liabilities of an associate or a joint venture at the date of acquisition is recognized as goodwill and is included in the carrying amount of the investment. Amortization of goodwill is not permitted. b. Any excess of the Company’s share of the net fair value of the identifiable assets and liabilities of an associate or a joint venture over the acquisition cost, after reassessing the fair value, is recognized as a gain in profit or loss on the acquisition date. Under the equity method, the investments in associates and joint ventures are carried on the balance sheet at cost plus post acquisition changes in the Company’s share of profit or loss and other comprehensive income of associates and joint ventures. The Company’s share of changes in associates’ and joint ventures’ profit or loss and other comprehensive income are recognized directly in profit or loss and other comprehensive income, respectively. Distributions received from an associate or a joint venture reduce the carrying amount of the investment. Any unrealized gains and losses resulting from transactions between the Company and the associate or the joint venture are eliminated to the extent of the Company’s interest in the associate or the joint venture. Financial statements of associates and joint ventures are prepared for the same reporting period as the Company. Where necessary, adjustments are made to bring the accounting policies in line with those of the Company. Upon an associate’s issuance of new shares, if the Company takes up more shares than its original proportionate holding while maintaining its significant influence over that associate, such increase would be accounted for as an acquisition of an additional equity interest in the associate. Upon an associate’s issuance of new shares, if the Company does not take up proportionate shares and reduces its stockholding percentage while maintaining its significant influence over that associate, the Company will treat the transaction as deemed disposal and reclassify to profit or loss the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest where appropriate. The Company ceases to use the equity method upon loss of significant influence over an associate. Any difference between the carrying amount of the investment in an associate upon loss of significant influence and the fair value of the retained investment plus proceeds from disposal will be recognized in profit or loss. If an investment in an associate be |
Significant Accounting Judgment
Significant Accounting Judgments, Estimates and Assumptions | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Significant Accounting Judgments, Estimates and Assumptions | 5. SIGNIFICANT ACCOUNTING JUDGMENTS, ESTIMATES AND ASSUMPTIONS The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of revenues, expenses, assets, liabilities, the accompanying disclosures and the disclosure of contingent liabilities. However, uncertainty about these assumptions and estimates could result in outcomes that require a material adjustment to the carrying amount of assets or liabilities affected in future periods. The key assumptions concerning the future and other key sources of estimating uncertainty at the reporting date that would have a significant risk for a material adjustment to the carrying amounts of assets or liabilities within the next fiscal year are discussed below. The Company bases its assumptions and estimates on information available when the consolidated financial statements were prepared. Existing circumstances and assumptions about future developments, however, may change due to market changes or circumstances arising beyond the control of the Company. Such changes are reflected in the assumptions when they occur. (1) The Fair Value of Level 3 Financial Instruments Where the fair values of the Level 3 financial assets recorded on the balance sheet cannot be derived from active markets, they are determined by the application of an appropriate valuation method which was mainly the market approach. The valuation of these financial assets involves significant judgment in the selection of comparable companies or equity transaction prices and the application of assumptions such as discounts for lack of marketability and valuation multiples, etc. Changes in assumptions about these factors could affect the reported fair value of the financial assets. Please refer to Note 11 for more details. (2) Inventories Inventories are valued at the lower of cost and net realizable value item by item. Net realizable value is the estimated selling price in the ordinary course of business less the estimated costs of completion and the estimated costs necessary to make the sale. Please refer to Note 6(4). Costs of completion include direct labor and overhead, including depreciation and maintenance of production equipment, indirect labor costs, indirect material costs, supplies, utilities and royalties that is expected to be incurred at normal production level. The Company estimates normal production level taking into account loss of capacity resulting from planned maintenance, based on historical experience and current production capacity. (3) Post-Employment Benefits Defined benefit costs and the present value of the defined benefit obligation for a pension plan are determined using the projected unit credit method. An actuarial valuation involves making various assumptions, which include the determination of the discount rate, future salary increase rate, mortality rate, etc., and may differ from actual developments in the future. In determining the appropriate discount rate, management considers the interest rates of the government bonds extrapolated from maturity corresponding to the expected duration of the defined benefit obligation. As for the rate of future salary increase, management takes account of past experiences, comparisons within the industry and the geographical region, inflation and the discount rate. Due to the complexity of the actuarial valuation and its long-term nature, a defined benefit obligation is highly sensitive to changes in these assumptions. The assumptions used are disclosed in Note 6(13). (4) Impairment of Property, Plant and Equipment At each reporting date or whenever events indicate that the asset’s value has declined or significant changes in the market with an adverse effect have taken place, the Company assesses whether there is an indication that an asset in the scope of IAS 36 may be impaired. If any indication exists, the Company completes impairment testing for the CGU to which the individual assets belong. Where the carrying amount of an asset or CGU exceeds its recoverable amount, the asset is considered impaired and is written down to its recoverable amount. The recoverable amount of an individual asset or CGU is the higher of fair value less costs of disposal and its value in use. The fair value less costs of disposal is based on best information available to reflect the amount that an entity could obtain from the disposal of the asset in an orderly transaction between market participants, after deducting the costs of disposal. The value in use is measured at the net present value of the future cash flows the entity expects to derive from the asset or CGU. Cash flow projection involves subjective judgments and estimates which include the estimated useful lives of property, plant and equipment, capacity that generates future cash flows, capacity of physical output, potential fluctuations of economic cycle in the industry and the Company’s operating situation. (5) Income Tax Uncertainties exist with respect to the interpretation of complex tax regulations, changes in tax laws, and the amount and timing of future taxable income. The Company establishes provisions, based on reasonable estimates, for possible consequences of audits by the tax authorities of the respective countries in which it operates. The amount of such provisions is based on various factors, such as experience of previous tax audits and different interpretations of tax regulations made by the taxable entity and the responsible tax authority. Such differences of interpretation may arise on a wide variety of issues depending on the conditions prevailing in the respective domicile of the Company. Deferred tax assets are recognized for all carryforward of unused tax losses, tax credits and deductible temporary differences to the extent that it is probable that future taxable profit will be available or there are sufficient taxable temporary differences against which the unused tax losses, unused tax credits or deductible temporary differences can be utilized. The amount of deferred tax assets determined to be recognized is based upon the likely timing and the level of future taxable profits and taxable temporary differences. Please refer to Note 6(23) for more details on unrecognized deferred tax assets. |
Contents of Significant Account
Contents of Significant Accounts | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Contents of Significant Accounts | 6. CONTENTS OF SIGNIFICANT ACCOUNTS (1) Cash and Cash Equivalents As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Cash on hand and petty cash $ 6,091 $ 6,074 Checking and savings accounts 25,021,265 26,384,925 Time deposits 49,139,549 59,966,481 Repurchase agreements collateralized by government bonds and corporate notes 9,494,834 9,134,997 Total $ 83,661,739 $ 95,492,477 (2) Financial Assets at Fair Value through Profit or Loss As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial assets mandatorily measured at fair value through profit or loss Common stocks $ 6,814,915 $ 8,381,085 Preferred stocks 2,998,228 3,299,419 Funds 2,030,688 2,195,524 Convertible Bonds 236,905 145,445 Forward contracts 3,561 — Option — — Total $ 12,084,297 $ 14,021,473 Current $ 528,450 $ 722,794 Noncurrent 11,555,847 13,298,679 Total $ 12,084,297 $ 14,021,473 The Company had a call option of a joint venture agreement between FUJITSU SEMICONDUCTOR LIMITED (FSL) and UMC, which was measured at fair value and the change in the fair value was recorded in profit or loss. On June 29, 2018, the Board of Directors of UMC resolved to exercise the call option and completed the acquisition on October 1, 2019. Please refer to Note 6(26). (3) Accounts Receivable, Net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Accounts receivable $ 23,784,141 $ 26,136,293 Less: loss allowance (48,152 ) (6 21 410 ) Net $ 23,735,989 $ 25, 514 8 8 Aging analysis of accounts receivable, net: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Neither past due nor impaired $ 18,271,304 $ 21,924,797 Past due but not impaired: £ 3,407,690 2,364,311 31 to 60 days 739,054 204,791 61 to 90 days 545,366 85,131 91 to 120 days 365,007 138,788 ³ 407,568 797 065 Subtotal 5,464,685 3,5 90 08 Total $ 23,735,989 $ 25, 514 883 Movement of loss allowance for accounts receivable: For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Beginning balance $ 39,578 $ 48,152 Net charge for the period 8,574 573 258 Ending balance $ 48,152 $ 621 41 The collection periods for third party domestic sales and third party overseas sales were month-end An impairment analysis is performed at each reporting date to measure expected credit losses (ECLs) of accounts receivable. For receivable past due within 60 days, including not past due, the Company estimates a provision rate to calculate ECLs. A provision rate is determined based on the Company’s historical credit loss experience and customers’ current financial condition, adjusted for forward-looking factors, such as customers’ economic environment. For the receivable past due over 60 days, the Company applies the aforementioned provision rate and also individually assesses whether to recognize additional expected credit losses by considering customer’s operating situation and debt-paying ability. (4) Inventories, Net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Raw materials $ 3,766,056 $ 5,102,571 Supplies and spare parts 3,133,737 3,548,376 Work in process 10,034,488 11,309,718 Finished goods 1,268,838 1,754,137 Total $ 18,203,119 $ 21,714,802 a. For the years ended December 31, 2017, 2018 and 2019, the Company recognized NT$118,252 million, NT$123,795 million and NT$122,999 million, respectively, in operating costs, of which NT$2,256 million, NT$1,698 million and NT$820 million in 2017, 2018 and 2019, respectively, were related to write-down of inventories. b. None of the aforementioned inventories were pledged. (5) Financial Assets at Fair Value through Other Comprehensive Income, Non-Current As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Equity instruments Common stocks $ 11,401,451 $ 14,547,738 Preferred stocks 184,026 175,494 Total $ 11,585,477 $ 14,723,232 The fair value of each investment in equity instrument to be measured at fair value through other comprehensive income is as follows: As of December 31, Type of securities Name of securities 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Common stock SILICON INTEGRATED SYSTEMS CORP. 1,032,930 961,898 Common stock UNIMICRON HOLDING LIMITED 561,261 795,795 Common stock MIE FUJITSU SEMICONDUCTOR LIMITED 2,220,103 — Common stock UNIMICRON TECHNOLOGY CORP. 4,373,833 8,237,712 Common stock ITE TECH. INC. 424,383 616,333 Common stock NOVATEK MICROELECTRONICS CORP. 2,335,131 3,601,365 Common stock SHIN-ETSU HANDOTAI TAIWAN CO., LTD. 453,810 334,635 Preferred stock MTIC HOLDINGS PTE. LTD. 184,026 175,494 a. These investments in equity instruments are held for medium to long-term purposes and therefore are accounted for as fair value through other comprehensive income. b. Amounts recognized in profit or loss and other comprehensive income in relation to the financial assets at fair value through other comprehensive income are listed below: For the years 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Dividend income recognized in profit or loss Held at end of period $ 268,406 $ 365,052 Derecognized during the period — — Total $ 268,406 $ 365,052 c. In consideration of the Company’s investment strategy, the Company disposed and derecognized partial equity instrument investments measured at fair value through other comprehensive income. Details on derecognition of such investments for the years ended December 31, 2018 and 2019 are as follow: For the years 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Fair value on the date of sale $ — $ 2,348,454 Cumulative gains (losses) reclassified to retained earnings due to derecognition $ — $ (551,903 ) (6) Investments Accounted For Under the Equity Method a. Details of investments accounted for under the equity method are as follows: As of December 31, 2018 2019 Investee companies Amount Percentage of Amount Percentage of NT$ NT$ (In Thousands) (In Thousands) Listed companies CLIENTRON CORP. $ 249,663 22.39 $ 276,515 21.90 FARADAY TECHNOLOGY CORP. (FARADAY) (Note A) 1,483,111 13.78 1,473,028 13.78 Unlisted companies MTIC HOLDINGS PTE. LTD. 3,026 45.44 18,157 45.44 WINAICO IMMOBILIEN GMBH (Note B) — 44.78 — 44.78 PURIUMFIL INC. — — 7,164 44.45 UNITECH CAPITAL INC. 568,005 42.00 642,660 42.00 TRIKNIGHT CAPITAL CORPORATION 1,520,575 40.00 2,281,631 40.00 HSUN CHIEH INVESTMENT CO., LTD. 1,608,551 36.49 1,686,502 36.49 YANN YUAN INVESTMENT CO., LTD. 2,032,013 30.87 2,761,821 30.87 HSUN CHIEH CAPITAL CORP. 161,319 30.00 122,060 30.00 VSENSE CO., LTD. 31,544 26.89 592 25.90 UNITED LED CORPORATION HONG KONG LIMITED 167,953 25.14 121,973 25.14 TRANSLINK CAPITAL PARTNERS I, L.P. (Note C) 120,440 10.38 172,414 10.38 WINAICO SOLAR PROJEKT 1 GMBH (Note B) — 50.00 — — YUNG LI INVESTMENTS, INC. 2,213 45.16 — — Total $ 7,948,413 $ 9,564,517 Note A: Beginning from June 2015, the Company accounts for its investment in FARADAY as an associate given the fact that the Company obtained the ability to exercise significant influence over FARADAY through representation on its Board of Directors. Note B: WINAICO SOLAR PROJEKT 1 GMBH and WINAICO IMMOBILIEN GMBH are joint ventures to the Company. Note C: The Company follows international accounting practices in equity accounting for limited partnerships and uses the equity method to account for these investees. The carrying amount of investments accounted for using the equity method for which there are published price quotations amounted to NT$1,733 million and NT$1,750 million, as of December 31, 2018 and 2019, respectively. The fair value of these investments were NT$1,621 million and NT$2,244 million, as of December 31, 2018 and 2019, respectively. None of the aforementioned associates and joint ventures were pledged. b. Financial information of associates and joint ventures: There is no individually significant associate or joint venture for the Company. For individually immaterial associates and joint ventures, the following tables summarize the amount recognized by the Company at its share of those associates and joint ventures separately. When an associate or a joint venture is a foreign operation, and the functional currency of the foreign entity is different from the Company, an exchange difference arising from translation of the foreign entity will be recognized in other comprehensive income (loss). Such exchange differences recognized in other comprehensive income (loss) in the financial statements for the years ended December 31, 2017, 2018 and 2019 were NT$45 million, NT$(16) million and NT$(9) million, respectively, which were not included in the following table. i. The aggregate amount of the Company’s share of all its individually immaterial associates that are accounted for using the equity method was as follows: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Profit (loss) from continuing operations $ 77,589 $ (616,665 ) $ 115,329 Post-tax 80,248 — — Other comprehensive income (loss) 526,773 (82,871 ) 873,308 Total comprehensive income (loss) $ 684,610 $ (699,536 ) $ 988,637 ii. The aggregate amount of the Company’s share of all its individually immaterial joint ventures that are accounted for using the equity method were all nil for the years ended December 31, 2017, 2018 and 2019, respectively. (7) Property, Plant and Equipment 2018 Cost: Land Buildings Machinery Transportation Furniture and Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 1,314,402 $ 38,073,660 $ 826,268,919 $ 75,782 $ 7,675,798 $ 52,557 $ 20,761,439 $ 894,222,557 Additions — — — — — — 17,579,689 17,579,689 Disposals — (64,878 ) (2,330,437 ) (18,363 ) (40,199 ) — — (2,453,877 ) Disposal of a subsidiary — — (224,895 ) — (6,515 ) (2,226 ) — (233,636 ) Transfers and reclassifications — 375,854 27,447,023 8,884 433,665 2,049 (27,693,591 ) 573,884 Exchange effect — (78,334 ) 2,527,895 52 (5,848 ) 1,069 (96,774 ) 2,348,060 As of December 31, 2018 $ 1,314,402 $ 38,306,302 $ 853,688,505 $ 66,355 $ 8,056,901 $ 53,449 $ 10,550,763 $ 912,036,677 Accumulated Depreciation and Impairment: Land Buildings Machinery and Transportation Furniture and Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ — $ 16,960,853 $ 665,771,857 $ 57,031 $ 5,636,982 $ 48,204 $ 5,949 $ 688,480,876 Depreciation — 1,535,409 47,871,174 6,080 533,628 2,298 — 49,948,589 Disposals — (57,812 ) (2,286,359 ) (17,963 ) (25,467 ) — — (2,387,601 ) Disposal of a subsidiary — — (180,843 ) — (5,264 ) (2,014 ) — (188,121 ) Transfers and reclassifications — 297 (3,164 ) — 2,867 — — — Exchange effect — 26,497 3,302,523 286 5,941 1,092 — 3,336,339 As of December 31, 2018 $ — $ 18,465,244 $ 714,475,188 $ 45,434 $ 6,148,687 $ 49,580 $ 5,949 $ 739,190,082 Net carrying amount: As of December 31, 2018 $ 1,314,402 $ 19,841,058 $ 139,213,317 $ 20,921 $ 1,908,214 $ 3,869 $ 10,544,814 $ 172,846,595 2019 a. Assets Used by the Company (Note): Cost: Land Buildings Machinery Transportation Furniture Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 861,487 $ 35,681,733 $ 853,481,220 $ 66,355 $ 6,736,916 $ 53,449 $ 10,550,763 $ 907,431,923 Additions — — — — — — 14,579,988 14,579,988 Disposals — (4,637 ) (8,122,361 ) (3,563 ) (196,487 ) (6,180 ) (27,758 ) (8,360,986 ) Disposal of a subsidiary — — (161,781 ) — — — — (161,781 ) Acquisition of a subsidiary 871,700 3,087,585 6,704,236 9 54,978 8,372 739,663 11,466,543 Transfers and reclassifications — 211,285 20,723,346 3,557 285,891 11,712 (20,179,970 ) 1,055,821 Exchange effect (41,064 ) (538,378 ) (7,077,088 ) (449 ) (39,174 ) (1,470 ) (79,170 ) (7,776,793 ) As of December 31, 2019 $ 1,692,123 $ 38,437,588 $ 865,547,572 $ 65,909 $ 6,842,124 $ 65,883 $ 5,583,516 $ 918,234,715 Accumulated Depreciation and Impairment: Land Buildings Machinery Transportation Furniture Leasehold Construction Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 17,549,256 $ 714,286,307 $ 45,434 $ 5,112,684 $ 49,580 $ 5,949 $ 737,049,210 Depreciation — 1,542,864 44,307,925 6,105 488,216 2,441 — 46,347,551 Impairment loss — — 84,974 — — — — 84,974 Disposals — (4,624 ) (8,105,713 ) (3,563 ) (195,766 ) (5,371 ) (5,949 ) (8,320,986 ) Disposal of a subsidiary — — (127,455 ) — — — — (127,455 ) Transfers and reclassifications — — 66,682 — (325 ) 514 — 66,871 Exchange effect — (136,976 ) (4,789,755 ) (182 ) (21,375 ) (1,017 ) — (4,949,305 ) As of December 31, 2019 $ — $ 18,950,520 $ 745,722,965 $ 47,794 $ 5,383,434 $ 46,147 $ — $ 770,150,860 Net carrying amount: As of December 31, 2019 $ 1,692,123 $ 19,487,068 $ 119,824,607 $ 18,115 $ 1,458,690 $ 19,736 $ 5,583,516 $ 148,083,855 b. Assets Subject to Operating Leases (Note): Cost: Land Buildings Machinery Furniture Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 452,915 $ 2,624,569 $ 207,285 $ 1,319,985 $ 4,604,754 Disposals — (623 ) — (317 ) (940 ) Acquisition of a subsidiary 7,051 24,024 — — 31,075 Transfers and reclassifications — — (81,872 ) 3,213 (78,659 ) Exchange effect (331 ) (10,699 ) — (7,701 ) (18,731 ) As of December 31, 2019 $ 459,635 $ 2,637,271 $ 125,413 $ 1,315,180 $ 4,537,499 Accumulated Depreciation and Impairment: Land Buildings Machinery Furniture Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 915,988 $ 188,881 $ 1,036,003 $ 2,140,872 Depreciation — 106,250 3,827 70,708 180,785 Disposals — (334 ) — (317 ) (651 ) Transfers and reclassifications — — (67,295 ) 10 (67,285 ) Exchange effect — (2,868 ) — (3,595 ) (6,463 ) As of December 31, 2019 $ — $ 1,019,036 $ 125,413 $ 1,102,809 $ 2,247,258 Net carrying amount: As of December 31, 2019 $ 459,635 $ 1,618,235 $ — $ 212,371 $ 2,290,241 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. In 2017 and 2018, the Company determined that the recoverable amounts based on the fair value less costs of disposal were higher than the carrying amounts of the CGUs and therefore there was no impairment recognized. In the second quarter of 2019, the Company reclassified SOCIALNEX ITALIA 1 S.R.L (SOCIALNEX), a subsidiary, as a disposal group held for sale. As such, the Company performed an impairment test on the CGU composed of property, plant and equipment before reclassifying the CGU as a single disposal group held for sale. The Company, determined the recoverable amount of the CGU based on the net selling price which was categorized to Level 3 and the impairment test revealed the recoverable amount of the CGU to be less than its carrying amount. Thus, the Company recorded in the other operating income and expenses an impairment loss of NT$85 million for the year ended December 31, 2019, on the CGU to be disposed of from the new business segment. The Company disposed SOCIALNEX in November 2019. Please refer to Note 8 for property, plant and equipment pledged as collateral. (8) Leases The Company leases various properties, such as land (including land use right), buildings, machinery and equipment, transportation equipment and other equipment with lease terms of 1 to 30 years, except for the land use rights with lease term of 50 years. Most lease contracts of land located in R.O.C state that lease payments will be adjusted based on the announced land value. The Company does not have purchase options of leased land at the end of the lease terms. a. The Company as a lessee (a) Right-of-use As of December NT$ (In Thousands) Land (including land use right) $ 5,700,136 Buildings 473,558 Machinery and equipment 2,092,924 Transportation equipment 12,019 Other equipment 12,880 Net $ 8,291,517 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. For the year ended NT$ Depreciation (In Thousands) Land (including land use right) $ 366,827 Buildings 87,572 Machinery and equipment 180,115 Transportation equipment 6,001 Other equipment 4,030 Total $ 644,545 i. For the year ended December 31, 2019, the Company’s addition to right-of-use ii. Please refer to Note 8 for right-of-use (b) Lease Liabilities As of December NT$ (In Thousands) Current $ 569,957 Noncurrent 5,461,068 Total $ 6,031,025 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. Please refer to Note 6(21) for the interest expenses on the lease liabilities. b. The Company as a lessor The Company entered into leases on certain property, plant and equipment which are classified as operating leases as they did not transfer substantially all of the risks and rewards incidental to ownership of the underlying assets. The main contracts are to lease the dormitory to the employees with cancellation clauses. Please refer to Note 6(7) for relevant disclosure of property, plant and equipment for operating leases under IFRS 16. (9) Intangible Assets 2018 Cost Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 15,188 $ 1,080,726 $ 4,687,751 $ 3,565,705 $ 9,349,370 Additions — — 214,278 612,253 826,531 Write-off — (422,591 ) (179,418 ) (987,841 ) (1,589,850 ) Disposal of a subsidiary (176 ) — — — (176 ) Reclassifications — 474,127 — — 474,127 Exchange effect — (6,458 ) (210,982 ) (1 ) (217,441 ) As of December 31, 2018 $ 15,012 $ 1,125,804 $ 4,511,629 $ 3,190,116 $ 8,842,561 Accumulated Amortization and Impairment Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ — $ 670,014 $ 2,585,190 $ 2,306,657 $ 5,561,861 Amortization — 357,624 468,296 1,086,882 1,912,802 Write-off — (422,591 ) (179,418 ) (987,841 ) (1,589,850 ) Exchange effect — (3,398 ) (30,657 ) (1 ) (34,056 ) As of December 31, 2018 $ — $ 601,649 $ 2,843,411 $ 2,405,697 $ 5,850,757 Net carrying amount: As of December 31, 2018 $ 15,012 $ 524,155 $ 1,668,218 $ 784,419 $ 2,991,804 2019 Cost: Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 15,012 $ 1,125,804 $ 4,511,629 $ 3,190,116 $ 8,842,561 Additions — 1,666,599 806,915 851,679 3,325,193 Write-off — (383,745 ) (953,128 ) (638,815 ) (1,975,688 ) Disposal of a subsidiary — — — (93 ) (93 ) Acquisition of a subsidiary — 964,903 198,181 155,670 1,318,754 Reclassifications — 53,661 — — 53,661 Exchange effect — (80,074 ) (380,092 ) (10,551 ) (470,717 ) As of December 31, 2019 $ 15,012 $ 3,347,148 $ 4,183,505 $ 3,548,006 $ 11,093,671 Accumulated Amortization and Impairment Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 601,649 $ 2,843,411 $ 2,405,697 $ 5,850,757 Amortization — 760,010 531,790 874,810 2,166,610 Impairment loss 7,398 — — — 7,398 Write-off — (383,745 ) (953,128 ) (638,815 ) (1,975,688 ) Disposal of a subsidiary — — — (93 ) (93 ) Reclassifications — 414 — — 414 Exchange effect — (27,152 ) (122,850 ) (3,972 ) (153,974 ) As of December 31, 2019 $ 7,398 $ 951,176 $ 2,299,223 $ 2,637,627 $ 5,895,424 Net carrying amount: As of December 31, 2019 $ 7,614 $ 2,395,972 $ 1,884,282 $ 910,379 $ 5,198,247 The amortization amounts of intangible assets are as follows: For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Operating costs $ 758,050 $ 827,596 Operating expenses $ 1,154,752 $ 1,339,014 (10) Short-Term Loans As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Unsecured bank loans $ 7,780,552 $ 8,080,200 Unsecured other loans 5,323,256 3,935,006 Total $ 13,103,808 $ 12,015,206 For the years ended 2017 2018 2019 Interest rates applied 0.00%~4.35% 0.00%~4.55% 0.00%~4.55% The Company’s unused short-term lines of credit amounted to NT$77,658 million and NT$64,169 million as of December 31, 2018 and 2019, respectively. (11) Bonds Payable As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Unsecured domestic bonds payable $ 23,700,000 $ 21,200,000 Unsecured convertible bonds payable 18,196,332 17,729,293 Less: Discounts on bonds payable (518,150 ) (147,877 ) Total 41,378,182 38,781,416 Less: Current portion (2,499,235 ) (20,093,825 ) Net $ 38,878,947 $ 18,687,591 a. UMC issued domestic unsecured corporate bonds. The terms and conditions of the bonds were as follows: Term Issuance date Issued amount Coupon rate Repayment Seven-year In early June 2012 NT$2,500 million 1.63% Interest was paid annually and the principal was fully repaid in June 2019. Five-year In mid-March NT$7,500 million 1.35% Interest was paid annually and the principal was fully repaid in March 2018. Seven-year In mid-March NT$2,500 million 1.50% Interest will be paid annually and the principal will be repayable in March 2020 upon maturity. Seven-year In mid-June NT$2,000 million 1.70% Interest will be paid annually and the principal will be repayable in June 2021 upon maturity. Ten-year In mid-June NT$3,000 million 1.95% Interest will be paid annually and the principal will be repayable in June 2024 upon maturity. Five-year In late March 2017 NT$6,200 million 1.15% Interest will be paid annually and the principal will be repayable in March 2022 upon maturity. Seven-year In late March 2017 NT$2,100 million 1.43% Interest will be paid annually and the principal will be repayable in March 2024 upon maturity. Five-year In early October 2017 NT$2,000 million 0.94% Interest will be paid annually and the principal will be repayable in October 2022 upon maturity. Seven-year In early October 2017 NT$3,400 million 1.13% Interest will be paid annually and the principal will be repayable in October 2024 upon maturity. b. On May 18, 2015, UMC issued SGX-ST i. Issue Amount: US$600 million ii. Period: May 18, 2015 ~ May 18, 2020 (Maturity date) iii. Redemption: (i) UMC may redeem the bonds, in whole or in part, after 3 years of the issuance and prior to the maturity date, at the principal amount of the bonds with an interest calculated at the rate of -0.25% (ii) UMC may redeem the bonds, in whole, but not in part, at the Early Redemption Amount if at least 90% in principal amount of the bonds has already been converted, redeemed or repurchased and cancelled. (iii) UMC may redeem all, but not part, of the bonds, at the Early Redemption Amount at any time, in the event of certain changes in the R.O.C.’s tax rules which would require UMC to gross up for payments of principal, or to gross up for payments of interest or premium. (iv) All or any portion of the bonds will be redeemable at Early Redemption Amount at the option of bondholders on May 18, 2018 at 99.25% of the principal amount. (v) Bondholders have the right to require UMC to redeem all of the bonds at the Early Redemption Amount if UMC’s ordinary shares cease to be listed on the Taiwan Stock Exchange. (vi) In the event that a change of control as defined in the indenture of the bonds occurs to UMC, the bondholders shall have the right to require UMC to redeem the bonds, in whole but not in part, at the Early Redemption Amount. iv. Terms of Conversion: (i) Underlying Securities: Ordinary shares of UMC (ii) Conversion Period: The bonds are convertible at any time on or after June 28, 2015 and prior to May 8, 2020, into UMC ordinary shares; provided, however, that if the exercise date falls within 5 business days from the beginning of, and during, any closed period, the right of the converting holder of the bonds to vote with respect to the shares it receives will be subject to certain restrictions. (iii) Conversion Price and Adjustment: The conversion price was originally NT$17.50 per share. The conversion price will be subject to adjustments upon the occurrence of certain events set out in the indenture. The conversion price was NT$14.2179 per share on December 31, 2019. v. Redemption on the Maturity Date: On the maturity date, UMC will redeem the bonds at 98.76% of the principal amount unless, prior to such date: (i) UMC shall have redeemed the bonds at the option of UMC, or the bonds shall have been redeemed at option of the bondholder; (ii) The bondholders shall have exercised the conversion right before maturity; or (iii) The bonds shall have been redeemed or repurchased by UMC and cancelled. In accordance with IAS 32 “Financial Instruments: Presentation”, the value of the conversion right of the convertible bonds was determined at issuance and recognized in additional paid-in During the year ended December 31, 2019, certain bondholders had converted the outstanding principal amount of the convertible bonds totaling US$15 million into 33 million shares, of which capital increase share registration procedures have not been completed and were classified as capital collected in advance. (12) Long-Term Loans a. Details of long-term loans as of December 31, 2018 and 2019 are as follows: As of December 31, Lenders 2018 2019 Redemption NT$ (In Thousands) NT$ (In Thousands) Secured Long-Term Loan from Mega International Commercial Bank (1) $ 6,013 $ 3,827 Effective July 3, 2017 to July 5, 2021. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Mega International Commercial Bank (2) — 10,380 Effective October 24, 2019 to October 24, 2024. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (1) 3,006 1,288 Effective August 10, 2015 to August 10, 2020. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (2) 83,243 71,351 Effective October 19, 2015 to October 19, 2025. Interest-only payment for the first year. Principal is repaid in 37 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (3) — 29,896 Repayable monthly from May 31, 2019 to May 31, 2023 with monthly interest payments. Secured Syndicated Loans from China Development Bank and 6 others 28,987,895 26,892,457 Effective October 20, 2016 to October 20, 2024. Interest-only payment for the first and the second year. Principal is repaid in 13 semi-annual payments with semi-annual interest payments. Unsecured Syndicated Loans from Bank of Taiwan and 7 others 747,900 — Repayable semi-annually from February 6, 2017 to February 6, 2020 with monthly interest payments. Unsecured Long-Term Loan from Bank of Taiwan 1,000,000 — Repayable quarterly from March 23, 2019 to December 23, 2021 with monthly interest payments. Unsecured Long-Term Loan from CTBC Bank — 747,900 Effective January 10, 2019 to September 30, 2021. Interest-only payment for the first and nine months. Principal is repaid in full at the end of the term with monthly interest payments. Unsecured Long-Term Loan from ICBC Bank — 1,744,975 Repayable semi-annually from March 10, 2020 to September 9, 2021 with quarterly interest payments. Unsecured Revolving Loan from Mega International Commercial Bank (Note A) — 2,000,000 Repayable semi-annually from October 16, 2020 to April 16, 2022 with monthly interest payments. Unsecured Revolving Loan from Chang Hwa Commercial Bank (Note B) — 2,400,000 Repayable quarterly from January 26, 2021 to October 26, 2022 with monthly interest payments. Subtotal 30,828,057 33,902,074 Less: Administrative expenses from syndicated loans (1,842 ) — Less: Current portion (2,622,161 ) (4,701,775 ) Total $ 28,204,054 $ 29,200,299 For the years ended December 31, 2017 2018 2019 Interest rates applied 0.99%~4.66% 0.99%~5.56% 0.55%~5.56% Note A: UMC entered into a 5-year Note B: UMC entered into a 5-year b. Please refer to Note 8 for property, plant and equipment pledged as collateral for long- term loans. c. In 2014, UMC resolved to provide endorsement for NEXPOWER’s syndicated loan from banks including Bank of Taiwan. The maximum balance for the years ended December 31, 2018 and 2019 were both NT$2,448 million. As of December 31, 2018 and 2019, the actual amount provided were both NT$748 million. d. In 2016, HJ resolved to provide endorsement for USCXM’s syndicated loan from banks including China Development Bank. The maximum balance for the years ended December 31, 2018 and 2019 were NT$9,021 million and NT$8,832 million, respectively. As of December 31, 2018 and 2019, the actual amount provided were NT$4,219 million and NT$3,914 million, respectively. e. In 2017, UMC resolved to provide endorsement for USCXM’s syndicated loan from banks including China Development Bank. The maximum balance for the years ended December 31, 2018 and 2019 were US$503 million and US$464 million, respectively. As of December 31, 2018 and 2019, the actual amount provided were NT$14,766 million and $13,696 million, respectively. (13) Post-Employment Benefits a. Defined contribution plan The employee pension plan under the Labor Pension Act of the R.O.C. is a defined contribution plan. Pursuant to the plan, UMC and its domestic subsidiaries make monthly contributions of 6% based on each individual employee’s salary or wage to employees’ pension accounts. Pension benefits for employees of the Singapore branch and subsidiaries overseas are provided in accordance with the local regulations. Total pension expenses of NT$1,256 million, NT$1,339 million and NT$1,369 million are contributed by the Company for the years ended December 31, 2017, 2018 and 2019, respectively. b. Defined benefit plan The employee pension plan mandated by the Labor Standards Act of the R.O.C. is a defined benefit plan. The pension benefits are disbursed based on the units of service years and average monthly salary prior to retirement according to the Labor Standards Act. Two units per year are awarded for the first 15 years of services while one unit per year is awarded after the completion of the 15th year and the total units will not exceed 45 units. The Company contributes an amount equivalent to 2% of the employees’ total salaries and wages on a monthly basis to the pension fund deposited with the Bank of Taiwan under the name of a pension fund supervisory committee. The pension fund is managed by the government’s designated authorities and therefore is not included in the Company’s consolidated financial statements. For the years ended December 31, 2017, 2018 and 2019, total pension expenses of NT$80 million, NT$69 million and NT$59 million, respectively, were recognized by the Company. i. Movements in present value of defined benefit obligation during the year: For the years ended December 31, 2018 2019 NT$ (In Thousands) NT$ (In Thousands) Defined benefit obligation at beginning of year $ (5,671,058 ) $ (5,620,509 ) Items recognized as profit or loss: Service cost (24,477 ) (21,043 ) Interest cost (61,247 ) (51,146 ) Subtotal (85,724 ) (72,189 ) Remeasurements recognized in other comprehensive income (loss): Arising from changes in financial assumptions (91,350 ) (114,976 ) Experience adjustments (5,907 ) 180,095 Subtotal (97,257 ) 65,119 Benefits paid 233,530 216,510 Defined benefit obligation at end of year $ (5,620,509 ) $ (5,411,069 ) ii. Movements in fair value of plan assets during the year: For the years ended December 31, 2018 2019 NT$ (In Thousands) NT$ Beginning balance of fair value of plan assets $ 1,532,539 $ 1,453,335 Items recognized as profit or loss: Interest income on plan assets 16,552 13,225 Contribution by employer 95,577 94,362 Benefits paid (233,530 ) (216,510 ) Remeasurements recognized in other comprehensive income (loss): Return on plan assets, excluding amounts included in interest income 42,197 41,284 Fair value of plan assets at end of year $ 1,453,335 $ 1,385,696 The actual returns on plan assets of the Company for the years ended December 31, 2018 and 2019 were NT$59 million and NT$55 million, respectively. iii. The de |
Significant Related Party Trans
Significant Related Party Transactions | 12 Months Ended |
Dec. 31, 2019 | |
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Significant Related Party Transactions | 7. SIGNIFICANT RELATED PARTY TRANSACTIONS a. Significant intercompany transactions between consolidated entities were as follows: For the year ended December 31, 2017 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 59,968,172 Net 60 days UMC UMC-USA Accounts receivable 6,737,723 — UMC UMC GROUP JAPAN Sales 4,212,523 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 659,488 — UMC USCXM Sales 998,899 (Note C ) Net 30 days UMC USCXM Accounts receivable 4,790,930 — UMC USCXM Loan receivable 3,924,360 — HJ UMC-USA Sales 214,147 Net 60 days HJ UMC-USA Accounts receivable 35,498 — HJ UMC GROUP JAPAN Sales 223,740 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 43,332 — USCXM UMC-USA Sales 241,220 Net 60 days USCXM UMC-USA Accounts receivable 141,272 — For the year ended December 31, 2018 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 57,107,585 Net 60 days UMC UMC-USA Accounts receivable 7,312,272 — UMC UMC GROUP JAPAN Sales 4,159,637 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 905,048 — UMC USCXM Sales 1,356,567 (Note C ) Net 30 days UMC USCXM Accounts receivable 48,163 — USCXM UMC-USA Sales 698,988 Net 60 days USCXM UMC-USA Accounts receivable 120,678 — HJ UMC-USA Sales 307,471 Net 60 days HJ UMC-USA Accounts receivable 35,161 — HJ UMC GROUP JAPAN Sales 272,218 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 61,971 — For the year ended December 31, 2019 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 47,736,335 Net 60 days UMC UMC-USA Accounts receivable 5,937,706 — UMC UMC GROUP JAPAN Sales 3,933,964 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 608,622 — UMC USCXM Sales 1,209,310 (Note C ) Net 30 days UMC USCXM Accounts receivable 31,334 — UMC USCXM Loan receivable 1,201,200 — USCXM UMC-USA Sales 745,226 Net 60 days USCXM UMC-USA Accounts receivable 33,242 — HJ UMC-USA Sales 152,012 Net 60 days HJ UMC-USA Accounts receivable 21,138 — HJ UMC GROUP JAPAN Sales 250,736 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 51,150 — Note A: The significant intercompany transactions listed above include downstream transactions. Note B: The sales price to the above related parties was determined through mutual agreement in reference to market conditions. Note C: UMC authorized technology licenses to its subsidiary, USCXM, in the amount of US$0.35 billion, which was recognized as deferred revenue to be realized over time. b. Significant transactions between the Company and other related parties were as follows: (i) Name and Relationship of Related Parties Name of related parties Relationship with the Company FARADAY TECHNOLOGY CORP. and its Subsidiaries Associate HSUN CHIEH CAPITAL CORP. Associate TRIKNIGHT CAPITAL CORPORATION Associate HSUN CHIEH INVESTMENT CO., LTD. Associate JINING SUNRICH SOLARENERGY CORPORATION Joint venture’s subsidiary SILICON INTEGRATED SYSTEMS CORP. The Company’s director PHOTRONICS DNP MASK CORPORATION Other related parties UNITEDVISION SEMICONDUCTOR CO., LTD. Other related parties UNISTARS CORPORATION Other related parties UPI SEMICONDUCTOR CORP. Other related parties CHUAN-FANG ZHUAN Subsidiary’s director (ii) Operating revenues For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 1,357,720 $ 1,291,398 $ 1,532,339 Joint ventures 12,465 4,277 — Others 30,417 27,881 45,523 Total $ 1,400,602 $ 1,323,556 $ 1,577,862 (iii) Accounts receivable, net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Associates $ 134,646 $ 278,702 Others 4,266 11,243 Total $ 138,912 $ 289,945 The sales price to the above related parties was determined through mutual agreement in reference to market conditions. The collection period for domestic sales to related parties was month-end (iv) Refund liabilities (classified under other current liabilities) As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Associates $ 1,287 $ 7,880 Others 71 48 Total $ 1,358 $ 7,928 (v) Significant asset transactions Acquisition of financial assets at fair value through profit or loss – noncurrent For the years ended December 31, 2017 and 2018: None. For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 500 Stock of MATERIALS $ 32,923 Associates 1,900 Stock of GEAR RADIO 37,211 Total $ 70,134 Acquisition of investments accounted for under the equity method For the year ended December 31, 2017: None. For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 84,000 Stock $ 840,000 For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 72,000 Stock $ 720,000 Acquisition of intangible assets Purchase price For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 322,808 $ 200,610 $ 339,463 Disposal of subsidiary For the years ended December 31, 2017 and 2019: None. For the year ended Trading Volume Transaction underlying Proceeds Disposal NT$ NT$ (In Thousands) (In Thousands) Others 46,168 Stock of UNISTARS $ 4,617 $ (31,856 ) Disposal of financial assets For the year ended Trading Volume Transaction underlying Proceeds Disposal NT$ NT$ (In Thousands) (In Thousands) Others 6,489 Stock of ASIA PACIFIC $ 50,745 $ (13,753 ) For the years ended December 31, 2018 and 2019: None. (vi) Others Mask expenditure For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Others $ 994,710 $ 1,750,088 $ 2,346,263 Other payables of mask expenditure As of December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Others $ 580,789 $ 571,036 $ 683,892 c. Key management personnel compensation For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Short-term employee benefits $ 271,554 $ 387,294 $ 271,135 Post-employment benefits 3,478 4,660 2,406 Termination benefits 6,957 — 3,415 Share-based payment 68 293,857 62,203 Others 294 435 578 Total $ 282,351 $ 686,246 $ 339,737 |
Assets Pledged as Collateral
Assets Pledged as Collateral | 12 Months Ended |
Dec. 31, 2019 | |
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Assets Pledged as Collateral | 8. ASSETS PLEDGED AS COLLATERAL The following table lists assets of the Company pledged as collateral: As of December 31, 2018 2019 Party to which asset(s) was pledged Purpose of pledge NT$ NT$ (In Thousands) (In Thousands) Refundable Deposits (Bank deposit and Time deposit) $ 961,198 $ 811,035 Customs Customs duty guarantee Refundable Deposits (Time deposit) 237,358 348,117 Science Park Administration Collateral for land lease Refundable Deposits (Time deposit) 19,579 19,510 Science Park Administration Collateral for dormitory lease Refundable Deposits (Time deposit) 37,084 41,785 Liquefied Natural Gas Business Division, CPC Corporation, Taiwan Energy resources guarantee Refundable Deposits (Time deposit) 1,000,000 1,000,000 Bank of China Bank performance guarantee Buildings 5,823,938 5,381,590 Taiwan Cooperative Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Machinery and equipment 25,762,086 19,029,077 Taiwan Cooperative Bank, Mega International Commercial Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Right-of-use — 292,120 Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Other noncurrent assets 309,108 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Total $ 34,150,351 $ 26,923,234 |
Significant Contingencies and U
Significant Contingencies and Unrecognized Contract Commitments | 12 Months Ended |
Dec. 31, 2019 | |
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Significant Contingencies and Unrecognized Contract Commitments | 9. SIGNIFICANT CONTINGENCIES AND UNRECOGNIZED CONTRACT COMMITMENTS (1) As of December 31, 2019, amounts available under unused letters of credit for importing machinery and equipment were NT$0.1 billion. (2) As of December 31, 2019, the Company entrusted financial institutes to open performance guarantee, mainly related to the litigations and customs tax guarantee, amounting to NT$1.7 billion. (3) The Company entered into several patent license agreements and development contracts of intellectual property for a total contract amount of approximately NT$10.8 billion. As of December 31, 2019, the portion of royalties and development fees not yet recognized was NT$1.4 billion. (4) The Company entered into several construction contracts for the expansion of its operations. As of December 31, 2019, these construction contracts amounted to approximately NT$2.0 billion and the portion of the contracts not yet recognized was approximately NT$0.4 billion. (5) The Board of Directors of UMC resolved in October 2014 to participate in a 3-way non-controlling non-controlling non-controlling (6) On August 31, 2017, the Taichung District Prosecutors Office indicted UMC based on the Trade Secret Act of R.O.C., alleging that employees of UMC misappropriated the trade secrets of MICRON TECHNOLOGY, INC. (“MICRON”). On December 5, 2017, MICRON filed a civil action with similar cause against UMC with the United States District Court, Northern District of California. MICRON claimed entitlement to the actual damages, treble damages and relevant fees and requested the court to issue an order that enjoins UMC from using its trade secrets in question. UMC has appointed counsels to prepare answers against these charges. Currently the civil complaint has been stayed by the court and the criminal proceeding is ongoing. On January 12, 2018, UMC filed three patent infringement actions with the Fuzhou Intermediate People’s Court against, among others, MICRON (XI’AN) CO., LTD. and MICRON (SHANGHAI) TRADING CO., LTD., requesting the court to order the defendants to stop manufacturing, processing, importing, selling, and committing to sell the products deploying the infringing patents in questions, and also to destroy all inventories and related molds and tools. On July 3, 2018, the Fuzhou Intermediate People’s Court granted preliminary injunction against the aforementioned two defendants, holding that the two defendants must immediately cease to manufacture, sell, and import products that infringe the patent rights of UMC. The court has approved withdrawal of one of the patent infringement actions on our motion while the other two actions are still on trial. On November 1, 2018, the Department of Justice of the United States (“DOJ”) unsealed an indictment against UMC, FUJIAN JINHUA INTEGRATED CIRCUIT CO., LTD. (“JINHUA”), and three individuals, including one current employee and two former employees of UMC, alleging that UMC and others conspired to steal trade secrets of MICRON, and used that information to develop technology that was subsequently transferred to JINHUA. On the same day, the DOJ filed a civil complaint enjoining the aforementioned defendants from exporting to the United States any products containing DRAM manufactured by UMC or JINHUA and preventing the defendants from transferring the trade secrets to anyone else. UMC has appointed counsels to prepare answers against these charges. Besides, UMC has suspended the joint technology development activities with JINHUA. Currently the civil complaint has been stayed by the court and the criminal proceeding is ongoing. Given these litigations are still in the preliminary stages, UMC cannot assess the legal proceeding and probable outcome or impact. (7) On March 14, 2019, a putative class action styled Meyer v. United Microelectronics Corporation and several executives, was filed under Securities Exchange Act of 1934 and Rule 10b-5 |
Significant Subsequent Events
Significant Subsequent Events | 12 Months Ended |
Dec. 31, 2019 | |
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Significant Subsequent Events | 10. SIGNIFICANT SUBSEQUENT EVENTS (1) Recently the emergence and wide spread of COVID-19 has resulted in quarantines, travel restrictions, and the temporary closure of stores and facilities in most part of the world where the Company and the Company’s customers operate. If such outbreak continues or worsens, it may adversely affect the Company’s business, financial condition and operating results for 2020 as we have significant operations in China, Taiwan and the Asia Pacific region. Because of the significant uncertainties surrounding the COVID-19 outbreak, the extent of the business and the related financial impact cannot be predicted at this time. (2) On February 11, 2020, the Board of Directors of HJ resolved to participate in the capital injection of USCXM in stages for a total investment amount of RMB¥3.5 billion. |
Financial Risk and Fair Value D
Financial Risk and Fair Value Disclosures | 12 Months Ended |
Dec. 31, 2019 | |
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Financial Risk and Fair Value Disclosures | 11. FINANCIAL RISK AND FAIR VALUE DISCLOSURES (1) Categories of financial instruments As of December 31, Financial Assets 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial assets at fair value through profit or loss $ 12,084,297 $ 14,021,473 Financial assets at fair value through other comprehensive income 11,585,477 14,723,232 Financial assets measured at amortized cost Cash and cash equivalents (excludes cash on hand) 83,655,648 95,486,403 Receivables 24,583,451 26, 459 392 Refundable deposits 2,757,399 2,600,733 Other financial assets 2,320,037 2,353,066 Total $ 136,986,309 $ 155, 644 299 As of December 31, Financial Liabilities 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial liabilities measured at amortized cost Short-term loans $ 13,103,808 $ 12,015,206 Payables 23,559,548 27, 433 065 Guarantee deposits (current portion included) 665,793 296,694 Bonds payable (current portion included) 41,378,182 38,781,416 Long-term loans (current portion included) 30,826,215 33,902,074 Lease liabilities (Note) — 6,031,025 Other financial liabilities 20,523,099 20,093,441 Total $ 130,056,645 $ 138, 552 921 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. (2) Financial risk management objectives and policies The Company’s risk management objectives are to manage the market risk, credit risk and liquidity risk related to its operating activities. The Company identifies, measures and manages the aforementioned risks based on policy and risk preference. The Company has established appropriate policies, procedures and internal controls for financial risk management. Before entering into significant financial activities, approval process by the Board of Directors and Audit Committee must be carried out based on related protocols and internal control procedures. The Company complies with its financial risk management policies at all times. (3) Market risk Market risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risks comprise currency risk, interest rate risk and other price risk (such as equity price risk). Foreign currency risk The Company’s exposure to the risk of changes in foreign exchange rates relates primarily to the Company’s operating activities (when revenue or expense is denominated in a different currency from the Company’s functional currency) and the Company’s net investments in foreign subsidiaries. The Company applies natural hedges on the foreign currency risk arising from purchases or sales, and utilizes spot or forward exchange contracts to manage foreign currency risk and the net effect of the risks related to monetary financial assets and liabilities is minor. The notional amounts of the foreign currency contracts are the same as the amount of the hedged items. In principle, the Company does not carry out any forward exchange contracts for uncertain commitments. The Company designates certain forward currency contracts as cash flow hedges to hedge its exposure to foreign currency exchange risk associated with certain highly probable forecast transactions. On the basis of assessment, the Company expects that the value of forward currency exchange contracts and the value of the hedged transactions will change systematically in opposite directions for given changes in foreign exchange rates. Hedge ineffectiveness in these hedging relationships mainly arises from the counterparties’ credit risk, impacting the fair value movements of the hedging instruments and hedged items. No other sources of ineffectiveness emerged from these hedging relationships. Furthermore, as net investments in foreign subsidiaries are for strategic purposes, they are not hedged by the Company. Certain forward exchange contracts designated by the Company to hedge foreign currency exchange rate risks associated with the purchase of additional shares of USJC in JPY, amounting to JPY 23 billion, expired prior to December 31, 2018. The cash flow hedge reserve in other components of equity, amounting to NT$(3) million, was recognized as consideration for the ownership interest of 84.1% in USJC on October 1, 2019. Please refer to Note 6(26). The foreign currency sensitivity analysis of the possible change in foreign exchange rates on the Company’s profit is performed on significant monetary items denominated in foreign currencies as of the end of the reporting period. When NTD strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2017, 2018 and 2019 decreases/increases by NT$1,330 million, NT$1,367 million and NT$1,009 million, respectively. When RMB strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2017, 2018 and 2019 increases/decreases by NT$4,011 million, NT$2,624 million and NT$2,200 million, respectively. Interest rate risk The Company is exposed to interest rate risk arising from borrowing at floating interest rates. All of the Company’s bonds have fixed interest rates and are measured at amortized cost. As such, changes in interest rates would not affect the future cash flows. On the other hand, as the interest rates of the Company’s short-term and long-term bank loans are floating, changes in interest rates would affect the future cash flows but not the fair value. Please refer to Note 6(10), 6(11) and 6(12) for the range of interest rates of the Company’s bonds and bank loans. At the reporting dates, a change of 10 basis points of interest rate in a reporting period could cause the profit for the years ended December 31, 2017, 2018 and 2019 to decrease/increase by NT$58 million, NT$44 million and NT$46 million, respectively. Equity price risk The Company’s listed and unlisted equity securities are susceptible to market price risk arising from uncertainties about future performance of equity markets. The Company’s equity investments are classified as financial assets at fair value through profit or loss and financial assets at fair value through other comprehensive income. The sensitivity analysis for the equity instruments is based on the change in fair value as of the reporting date. A change of 5% in the price of the aforementioned financial assets at fair value through profit or loss of listed companies could increase/decrease the Company’s profit for the years ended December 31, 2017, 2018 and 2019 by NT$33 million, NT$171 million and NT$252 million, respectively. A change of 5% in the price of the aforementioned financial assets at fair value through other comprehensive income of listed companies could increase/decrease the Company’s other comprehensive income for the years ended December 31, 2018 and 2019 by NT$408 million and NT$671 million, respectively. A change of 5% in the price of the aforementioned available-for-sale (4) Credit risk management The Company only trades with approved and creditworthy third parties. Where the Company trades with third parties which have less credit, it will request collateral from them. It is the Company’s policy that all customers who wish to trade on credit terms are subject to credit verification procedures. In addition, notes and accounts receivable balances are monitored on an ongoing basis to decrease the Company’s exposure to credit risk. The Company mitigates the credit risks from financial institutions by limiting its counter parties to only reputable domestic or international financial institutions with good credit standing and spreading its holdings among various financial institutions. The Company’s exposure to credit risk arising from the default of counter-parties is limited to the carrying amount of these instruments. As of December 31, 2018 and 2019, accounts receivable from the top ten customers represent 54% and 44% of the total accounts receivable of the Company, respectively. The credit concentration risk of other accounts receivable is insignificant. (5) Liquidity risk management The Company’s objectives are to maintain a balance between continuity of funding and flexibility through the use of cash and cash equivalents, bank loans, bonds and lease. The table below summarizes the maturity profile of the Company’s financial liabilities based on the contractual undiscounted payments and contractual maturity: As of December 31, 2018 Less than 2 to 3 4 to 5 > 5 years Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Non-derivative Short-term loans $ 13,171,811 $ — $ — $ — $ 13,171,811 Payables 23,088,071 199,788 — — 23,287,859 Guarantee deposits 52,890 154,787 15,385 442,731 665,793 Bonds payable 3,000,855 23,187,913 8,484,393 8,563,021 43,236,182 Long-term loans 4,036,260 10,997,829 17,209,849 4,765,719 37,009,657 Other financial liabilities 112,744 — 17,477,984 4,369,730 21,960,458 Total $ 43,462,631 $ 34,540,317 $ 43,187,611 $ 18,141,201 $ 139,331,760 As of December 31, 2019 Less than 2 to 3 4 to 5 > 5 years Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Non-derivative Short-term loans $ 12,211,621 $ — $ — $ — $ 12,211,621 Payables 26,9 9 8 3 25 198,862 — — 27, 197 18 Guarantee deposits 100,584 97,108 — 99,002 296,694 Bonds payable 20,659,607 10,590,265 8,689,971 — 39,939,843 Long-term loans 6,104,795 19,631,931 13,097,986 12,000 38,846,712 Lease liabilities 740,939 1,413,978 1,180,955 3,792,192 7,128,064 Other financial liabilities — 12,668,287 8,445,826 — 21,114,113 Total $ 66, 815 871 $ 44,600,431 $ 31,414,738 $ 3,903,194 $ 146, 734 234 (6) Foreign currency risk management UMC entered into forward exchange contracts for hedging the exchange rate risk arising from the net monetary assets or liabilities denominated in foreign currency. The details of forward exchange contracts entered into by UMC are summarized as follows: As of December 31, 2018 Type Notional Amount Contract Period Forward exchange contracts Sell USD 28 million December 10, 2018~ January 7, 2019 As of December 31, 2019 None. (7) Fair value measurement Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or in the absence of a principal market, in the most advantageous market for the asset or liability. The principal or the most advantageous market must be accessible by the Company. The fair value of an asset or a liability is measured using the assumptions that market participants would use when pricing the asset or liability, assuming that market participants act in their economic best interest. A fair value measurement of a non-financial The Company uses valuation techniques that are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs. All assets and liabilities for which fair value is measured or disclosed in the financial statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole: • Level 1 — Quoted (unadjusted) market prices in active markets for identical assets or liabilities; • Level 2 — Valuation techniques for which the lowest level input that is significant to the fair value measurement is directly or indirectly observable; • Level 3 — Valuation techniques for which the lowest level input that is significant to the fair value measurement is unobservable. For assets and liabilities that are recognized in the financial statements on a recurring basis, the Company determines whether transfers have occurred between levels in the hierarchy by re-assessing a. Assets and liabilities measured and recorded at fair value on a recurring basis: As of December 31, 2018 Level 1 Level 2 Level 3 Total NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) Financial assets: Financial assets at fair value through profit or loss, current $ 493,481 $ 34,969 $ — $ 528,450 Financial assets at fair value through profit or loss, noncurrent 3,612,243 44,597 7,899,007 11,555,847 Financial assets at fair value through other comprehensive income, noncurrent 8,166,277 — 3,419,200 11,585,477 As of December 31, 2019 Level 1 Level 2 Level 3 Total NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) Financial assets: Financial assets at fair value through profit or loss, current $ 668,476 $ — $ 54,318 $ 722,794 Financial assets at fair value through profit or loss, noncurrent 4,737,027 340,255 8,221,397 13,298,679 Financial assets at fair value through other comprehensive income, noncurrent 13,417,308 — 1,305,924 14,723,232 Fair values of financial assets at fair value through profit or loss and financial assets at fair value through other comprehensive income that are categorized into Level 1 are based on the quoted market prices in active markets. If there is no active market, the Company estimates the fair value by using the valuation techniques (income approach and market approach) in consideration of cash flow forecast, recent fund raising activities, valuation of similar companies, individual company’s development, market conditions and other economic indicators. If there are restrictions on the sale or transfer of a financial asset, which are a characteristic of the asset, the fair value of the asset will be determined based on similar but unrestricted financial assets’ quoted market price with appropriate discounts for the restrictions. To measure fair values, if the lowest level input that is significant to the fair value measurement is directly or indirectly observable, then the financial assets are classified as Level 2 of the fair value hierarchy, otherwise as Level 3. During the years ended December 31, 2018 and 2019, there were no significant transfers between Level 1 and Level 2 fair value measurements. Reconciliations for fair value measurement in Level 3 fair value hierarchy were as follows: Financial assets at fair value through profit or loss Financial assets at fair value through Common stock Preferred stock Funds Option Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 3,832,537 $ 2,994,294 $ 1,183,940 $ 31,605 $ 8,042,376 $ 3,350,694 $ 233,326 $ 3,584,020 Recognized in profit (loss) (3,356 ) (394,931 ) 69,827 (31,605 ) (360,065 ) — — — Recognized in other comprehensive loss — — — — — (115,520 ) (49,300 ) (164,820 ) Acquisition 140,338 630,626 577,347 — 1,348,311 — — — Disposal (468,337 ) (310,025 ) — — (778,362 ) — — — Return of capital (22,954 ) — — — (22,954 ) — — — Transfer to Level 3 22,050 — — — 22,050 — — — Transfer out of Level 3 (442,138 ) — — — (442,138 ) — — — Exchange effect 19,551 51,564 18,674 — 89,789 — — — As of December 31, 2018 $ 3,077,691 $ 2,971,528 $ 1,849,788 $ — $ 7,899,007 $ 3,235,174 $ 184,026 $ 3,419,200 Financial assets at fair value through profit or loss Financial assets at fair value through other Common stock Preferred stock Funds Convertible Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 3,077,691 $ 2,971,528 $ 1,849,788 $ — $ 7,899,007 $ 3,235,174 $ 184,026 $ 3,419,200 Recognized in profit (loss) (272,299 ) 273,047 (14,024 ) 6,145 (7,131 ) — — — Recognized in other comprehensive income (loss) — — — — — 199,244 (8,532 ) 190,712 Acquisition 159,476 396,890 204,082 51,956 812,404 — — — Disposal (1,475 ) (328,371 ) — — (329,846 ) (2,303,988 ) — (2,303,988 ) Return of capital (14,954 ) — — — (14,954 ) — — — Transfer to Level 3 — — — 49,706 49,706 — — — Transfer out of Level 3 (53,300 ) — — — (53,300 ) — — — Exchange effect (14,451 ) (33,800 ) (28,821 ) (3,099 ) (80,171 ) — — — As of December 31, 2019 $ 2,880,688 $ 3,279,294 $ 2,011,025 $ 104,708 $ 8,275,715 $ 1,130,430 $ 175,494 $ 1,305,924 The Company’s policy to recognize the transfer into and out of fair value hierarchy levels is based on the event or changes in circumstances that caused the transfer. The total losses of NT$286 million, NT$203 million and NT$113 million for the years ended December 31, 2017, 2018 and 2019, were included in profit or loss that is attributable to the change in unrealized gains or losses relating to those financial assets without quoted market prices held at the end of the reporting period. Significant unobservable inputs of fair value measurement in Level 3 fair value hierarchy were as follow: As of December 31, 2018 Category of equity securities Valuation technique Significant unobservable inputs Quantitative Interrelationship between inputs Sensitivity analysis of Unlisted stock Market Approach Discount for lack of marketability 15%~50% The greater degree of lack of marketability, the lower the estimated fair value is determined. A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) and other comprehensive income (loss) for the year ended December 31, 2018 by NT$309 million and by NT$241 million, respectively. As of December 31, 2019 Category of equity securities Valuation technique Significant inputs Quantitative Interrelationship between inputs Sensitivity analysis of Unlisted stock Market Approach Discount for lack of marketability 0%~50% The greater degree of lack of marketability, the lower the estimated fair value is determined. A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) for the year ended December 31, 2019 by NT$267 million and NT$191 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2019 by NT$87 million. b. Assets and liabilities not recorded at fair value but for which fair value is disclosed: The fair value of bonds payable is estimated by the market price or using a valuation model. The model uses market-based observable inputs including share price, volatility, credit spread and risk-free interest rates. The fair value of long-term loans is determined using discounted cash flow model, based on the Company’s current incremental borrowing rates of similar loans. The fair values of the Company’s short-term financial instruments including cash and cash equivalents, receivables, refundable deposits, other financial assets-current, short-term loans, payables and guarantee deposits approximate their carrying amount due to their maturities within one year. As of December 31, 2018 Fair value measurements during reporting Items Fair value Level 1 Level 2 Level 3 Carrying NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Bonds payables (current portion included) $ 41,714,368 $ 23,929,019 $ 17,785,349 $ — $ 41,378,182 Long-term loans (current portion included) 30,826,215 — 30,826,215 — 30,826,215 As of December 31, 2019 Fair value measurements during reporting Items Fair value Level 1 Level 2 Level 3 Carrying NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Bonds payables (current portion included) $ 39,571,920 $ 21,347,047 $ 18,224,873 $ — $ 38,781,416 Long-term loans (current portion included) 33,902,074 — 33,902,074 — 33,902,074 |
Operating Segment Information
Operating Segment Information | 12 Months Ended |
Dec. 31, 2019 | |
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Operating Segment Information | 12. OPERATING SEGMENT INFORMATION (1) The Company determined its operating segments based on business activities with discrete financial information regularly reported through the Company’s internal reporting protocols to the Company’s chief operating decision maker. The Company is organized into business units based on its products and services. As of December 31, 2019, the Company had the following segments: wafer fabrication and new business. There were no material differences between the accounting policies described in Note 4 and those applied by the operating segments. The primary operating activity of the wafer fabrication segment is the manufacture of chips to the design specifications of our customers by using our own proprietary processes and techniques. The Company maintains a diversified customer base across industries, including communication, consumer electronics, computer, memory and others, while continuing to focus on manufacturing for high growth, large volume applications, including networking, telecommunications, internet, multimedia, PCs and graphics. New business segment primarily includes researching, developing, manufacturing, and providing solar energy. Reportable segment information for the years ended December 31, 2017, 2018 and 2019 were as follows: For the year ended December 31, 2017 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 148,939,836 $ 344,870 $ 149,284,706 $ — $ 149,284,706 Operating revenues from sales among intersegments — 13,600 13,600 (13,600 ) — Segment net income (loss), net of tax 6,728,620 (665,895 ) 6,062,725 616,504 6,679,229 Acquisition of property, plant and equipment 44,229,488 6,788 44,236,276 — 44,236,276 Depreciation 50,737,240 227,880 50,965,120 — 50,965,120 Share of profit or loss of associates and joint ventures (258,959 ) (32,619 ) (291,578 ) 449,415 157,837 Income tax expense (benefit) 1,167,154 3 1,167,157 (174,676 ) 992,481 Impairment loss 632,207 318,128 950,335 — 950,335 For the year ended December 31, 2018 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 151,023,932 $ 228,639 $ 151,252,571 $ — $ 151,252,571 Operating revenues from sales among intersegments — 19,290 19,290 (19,290 ) — Segment net income (loss), net of tax 2,688,331 (602,809 ) 2,085,522 1,162,275 3,247,797 Acquisition of property, plant and equipment 19,589,770 305 19,590,075 — 19,590,075 Depreciation 49,777,242 171,347 49,948,589 — 49,948,589 Share of profit or loss of associates and joint ventures (1,201,986 ) (23,245 ) (1,225,231 ) 608,566 (616,665 ) Income tax expense (benefit) (456,058 ) (2,595 ) (458,653 ) (671,224 ) (1,129,877 ) Impairment loss 46,225 — 46,225 — 46,225 For the year ended December 31, 2019 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 148,123,306 $ 78,335 $ 148,201,641 $ — $ 148,201,641 Segment net income (loss), net of tax 6,156,681 (442,365 ) 5,714,316 (1, 138 066 ) 4,57 6 250 Acquisition of property, plant and equipment 16,518,483 — 16,518,483 — 16,518,483 Acquisition of intangible assets 2,443,593 — 2,443,593 — 2,443,593 Cash payments for the principal portion of the lease liability 614,845 18,643 633,488 — 633,488 Depreciation 47,038,876 134,005 47,172,881 — 47,172,881 Share of profit or loss of associates and joint ventures 733,044 — 733,044 (617,715 ) 115,329 Income tax expense (benefit) (414,104 ) 20,974 (393,130 ) 62 3 476 23 0 346 Impairment loss 33,160 84,974 118,134 — 118,134 As of December 31, 2018 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Segment assets $ 363,529,040 $ 1,263,368 $ 364,792,408 $ (2,195,179 ) $ 362,597,229 Segment liabilities $ 157,000,054 $ 1,068,722 $ 158,068,776 $ 130,970 $ 158,199,746 As of December 31, 2019 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Segment assets $ 369,189,983 $ 924,149 $ 370,114,132 $ (3, 852 39 ) $ 366, 261 693 Segment liabilities $ 161,955,970 $ 1,157,878 $ 163,113,848 $ 23 930 $ 163, 347 77 Note: The adjustments primarily consisted of intragroup elimination entries and GAAP difference adjustments. (2) Geographic information Non-current As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Taiwan $ 90,046,190 $ 73,481,714 Singapore 16,881,746 15,191,880 China (includes Hong Kong) 73,627,957 63,622,327 USA 31,919 70,498 Europe 155,489 24,383 Japan 232 12,265,769 Others — 3,309 Total $ 180,743,533 $ 164,659,880 Non-current right-of-use (3) Major customers Individual customers accounting for at least 10% of operating revenues for the years ended December 31, 2017, 2018 and 2019 were as follows: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Customer A from wafer fabrication segment $ 15,632,722 $ 15,357,470 $ 17,576,293 |
Capital Management
Capital Management | 12 Months Ended |
Dec. 31, 2019 | |
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Capital Management | 13. CAPITAL MANAGEMENT The primary objective of the Company’s capital management is to ensure that it maintains a strong credit rating and healthy capital ratios to support its business and maximize the stockholders’ value. The Company also ensures its ability to operate continuously to provide returns to stockholders and the interests of other related parties, while maintaining the optimal capital structure to reduce costs of capital. To maintain or adjust the capital structure, the Company may adjust the dividend payment to stockholders, return capital to stockholders, issue new shares or dispose assets to redeem liabilities. Similar to its peers, the Company monitors its capital based on debt to capital ratio. The ratio is calculated as the Company’s net debt divided by its total capital. The net debt is derived by taking the total liabilities on the consolidated balance sheets minus cash and cash equivalents. The total capital consists of total equity (including capital, additional paid-in non-controlling The Company’s strategy, which is unchanged for the reporting periods, is to maintain a reasonable ratio in order to raise capital with reasonable cost. The debt to capital ratios as of December 31, 2018 and 2019 were as follows: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Total liabilities $ 158,199,746 $ 163,347,778 Less: Cash and cash equivalents (83,661,739 ) (95,492,477 ) Net debt 74,538,007 67,855,301 Total equity 204,397,483 202,913,915 Total capital $ 278,935,490 $ 270,769,216 Debt to capital ratios 26.72% 25.06% |
Summary of Significant Accoun_2
Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2019 | |
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Statement of Compliance | (1) Statement of Compliance The Company’s consolidated financial statements were prepared in accordance with IFRSs, including International Financial Reporting Standards, International Accounting Standards, IFRIC Interpretations and SIC Interpretations, as issued by IASB. |
Basis of Preparation | (2) Basis of Preparation The consolidated financial statements have been prepared on a historical cost basis, except for financial instruments measured at fair value. |
General Description of Reporting Entity | (3) General Description of Reporting Entity a. Principles of consolidation Subsidiaries are fully consolidated from the date of acquisition (the date on which the Company obtains control), and continue to be consolidated until the date that such control ceases. The Company controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The financial statements of the subsidiaries are prepared for the same reporting period as the parent company, using consistent accounting policies. All intra-group balances, transactions, unrealized gains and losses and dividends resulting from intra-group transactions are eliminated in full. A change in the ownership interest of a subsidiary, without a change of control, is accounted for as an equity transaction. Total comprehensive income of subsidiaries is attributed to the stockholders of the parent and to the non-controlling non-controlling If the Company loses control over a subsidiary, the Company derecognizes the assets and liabilities of the subsidiary, as well as any non-controlling non-controlling b. The consolidated entities as of December 31, 2018 and 2019 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2018 2019 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED MICROELECTRONICS (EUROPE) B.V. Marketing support activities 100.00 100.00 UMC UMC CAPITAL CORP. Investment holding 100.00 100.00 UMC GREEN EARTH LIMITED (GE) Investment holding 100.00 100.00 UMC TLC CAPITAL CO., LTD. (TLC) Venture capital 100.00 100.00 UMC UMC INVESTMENT (SAMOA) LIMITED Investment holding 100.00 100.00 UMC FORTUNE VENTURE CAPITAL CORP. (FORTUNE) Consulting and planning for venture capital 100.00 100.00 UMC UMC GROUP JAPAN IC Sales 100.00 100.00 UMC UMC KOREA CO., LTD. Marketing support activities 100.00 100.00 UMC OMNI GLOBAL LIMITED (OMNI) Investment holding 100.00 100.00 UMC SINO PARAGON LIMITED Investment holding 100.00 100.00 UMC BEST ELITE INTERNATIONAL LIMITED (BE) Investment holding 100.00 100.00 UMC UNITED SEMICONDUCTOR JAPAN CO., LTD. Sales and manufacturing of integrated circuits — 100.00 UMC, FORTUNE and TLC NEXPOWER TECHNOLOGY CORP. (NEXPOWER) Sales and manufacturing of solar power batteries 93.36 93.36 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 78.47 80.49 UMC CAPITAL CORP. UMC CAPITAL (USA) Investment holding 100.00 100.00 TLC SOARING CAPITAL CORP. Investment holding 100.00 100.00 SOARING CAPITAL CORP. UNITRUTH ADVISOR (SHANGHAI) CO., LTD. Investment holding and advisory 100.00 100.00 GE UNITED MICROCHIP CORPORATION Investment holding 100.00 100.00 FORTUNE TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) Energy technical services 100.00 100.00 TERA ENERGY EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) Investment holding 100.00 100.00 EVERRICH-HK EVERRICH (SHANDONG) ENERGY CO., LTD. Solar engineering integrated design services 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (NEW YORK) Research and development 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 OMNI UMC TECHNOLOGY JAPAN CO., LTD. Semiconductor manufacturing technology development and consulting services 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 100.00 WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Sales and marketing service 100.00 100.00 NEXPOWER SOCIALNEX ITALIA 1 S.R.L. Photovoltaic power plant 100.00 — BE INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) Investment holding 100.00 100.00 INFOSHINE OAKWOOD ASSOCIATES LIMITED (OAKWOOD) Investment holding 100.00 100.00 OAKWOOD HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) Sales and manufacturing of integrated circuits 98.14 98.14 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. Integrated circuits design services 100.00 100.00 UNITED MICROCHIP CORPORATION and HJ UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) Sales and manufacturing of integrated circuits 65.22 65.22 |
Business Combinations and Goodwill | (4) Business Combinations and Goodwill Business combinations are accounted for using the acquisition method. The consideration transferred, the identifiable assets acquired and liabilities assumed are measured at the acquisition date fair value. For the components of non-controlling non-controlling When the Company acquires a business, it assesses the assets acquired and liabilities assumed for appropriate classification and designation in accordance with the contractual terms, economic circumstances and pertinent conditions as at the acquisition date. If the business combination is achieved in stages, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree is remeasured at fair value as at the acquisition date through profit or loss. Any contingent consideration to be transferred by the acquirer will be recognized at fair value at the acquisition date. Subsequent changes to the fair value of the contingent consideration, which is deemed to be an asset or liability, will be recognized in accordance with IFRS 9 (before January 1, 2018: IAS 39), either in profit or loss or other comprehensive income. If the contingent consideration is classified as equity, it should not be remeasured until it is finally settled within equity. Goodwill is initially measured at cost, being the excess of the aggregate of the consideration transferred, the acquisition date fair value of the acquirer’s previously held equity interest in the acquiree and the amount recognized for non-controlling non-controlling After initial recognition, goodwill is measured at cost less any accumulated impairment losses. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to each cash-generating unit (CGU) that is expected to benefit from the combination, irrespective of whether other assets or liabilities of the acquiree are assigned to those units. Each unit or groups of units to which the goodwill is so allocated represents the lowest level within the Company at which the goodwill is monitored for internal management purposes and cannot be larger than an operating segment before aggregation. Where goodwill forms part of a CGU and part of the operation within that unit is disposed, the goodwill associated with the operation disposed is included in the carrying amount of the operation. Goodwill disposed in this circumstance is measured based on the relative values of the operation disposed and the portion of the CGU retained. |
Foreign Currency Transactions | (5) Foreign Currency Transactions The Company’s consolidated financial statements are presented in New Taiwan Dollars (NTD), which is also the parent company’s functional currency. Each entity in the Company determines its own functional currency and items included in the financial statements of each entity are measured using that functional currency. Transactions in foreign currencies are initially recorded by the Company’s entities at their respective functional currency rates prevailing at the transaction date. Monetary assets and liabilities denominated in foreign currencies are translated into functional currency at the closing rates of exchange at the reporting date. Non-monetary Non-monetary All exchange differences arising on the settlement of monetary items or on translating monetary items are taken to profit or loss in the period in which they arise except for the following: a. Exchange differences arising from foreign currency borrowings for an acquisition of a qualifying asset to the extent that they are regarded as an adjustment to interest costs are included in the borrowing costs that are eligible for capitalization. b. Foreign currency derivatives within the scope of IFRS 9 (before January 1, 2018: IAS 39) are accounted for based on the accounting policy for financial instruments. c. Exchange differences arising on a monetary item that is part of a reporting entity’s net investment in a foreign operation are recognized initially in other comprehensive income and reclassified from equity to profit or loss upon disposal of such investment. When a gain or loss on a non-monetary non-monetary |
Translation of Foreign Currency Financial Statements | (6) Translation of Foreign Currency Financial Statements The assets and liabilities of foreign operations are translated into NTD at the closing rate of exchange prevailing at the reporting date and their income and expenses are translated at an average exchange rate for the period. The exchange differences arising on the translation are recognized in other comprehensive income. On disposal of a foreign operation, the cumulative amount of the exchange differences relating to that foreign operation, recognized in other comprehensive income and accumulated in the separate component of equity, is reclassified from equity to profit or loss when the gain or loss on disposal is recognized. On partial disposal of a subsidiary that includes a foreign operation that does not result in a loss of control, the proportionate share of the cumulative amount of the exchange differences recognized in other comprehensive income is re-attributed non-controlling Any goodwill and any fair value adjustments to the carrying amounts of assets and liabilities arising from the acquisition of a foreign operation are treated as assets and liabilities of the foreign operation and expressed in its functional currency. |
Convenience Translation into U.S. Dollars | (7) Convenience Translation into U.S. Dollars Translations of amounts from NTD into U.S. dollars (USD) for the reader’s convenience were calculated at the rate of USD1.00 to NTD29.91 on December 31, 2019 released by Board of Governors of the Federal Reserve System. No representation is made that the NTD amounts could have been, or could be, converted into USD at this rate. |
Current and Non-Current Distinction | (8) Current and Non-Current Distinction An asset is classified as current when: a. the Company expects to realize the asset, or intends to sell or consume it, in its normal operating cycle; b. the Company holds the asset primarily for the purpose of trading; c. the Company expects to realize the asset within twelve months after the reporting period; or d. the asset is cash or a cash equivalent unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. All other assets are classified as non-current. A liability is classified as current when: a. the Company expects to settle the liability in normal operating cycle; b. the Company holds the liability primarily for the purpose of trading; c. the liability is due to be settled within twelve months after the reporting period; or d. the Company does not have an unconditional right to defer settlement of the liability for at least twelve months after the reporting date. Terms of a liability that could, at the option of the counterparty, result in its settlement by the issue of equity instruments do not affect its classification. All other liabilities are classified as non-current. |
Cash Equivalents | (9) Cash Equivalents Cash equivalents are short-term, highly liquid investments that are readily convertible to known amounts of cash and with maturity dates that do not present significant risks of changes in value resulting from changes in interest rates, including time deposits with original maturities of three months or less and repurchase agreements collateralized by government bonds and corporate bonds. |
Financial Instruments | (10) Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instrument. Purchase or sale of financial assets and liabilities are recognized using trade date accounting. All financial assets are recognized initially at fair value plus, in the case of investments not at fair value through profit or loss, directly attributable costs. Financial assets at fair value through profit or loss are initially recognized at fair value, and transaction costs are expensed in the statement of comprehensive income. Financial Assets a. Classification and subsequent measurement 2017 The Company determines the classification of its financial assets at initial recognition. In accordance with IAS 39, financial assets of the Company are classified as financial assets at fair value through profit or loss, available-for-sale held-to-maturity i. Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss are comprised of financial assets held for trading and financial assets designated upon initial recognition at fair value through profit or loss. Financial assets acquired for the purpose of selling or repurchasing in the near term, and derivative financial instruments that are not designated as hedging instruments in hedge accounting are classified as financial assets at fair value through profit or loss. Financial assets at fair value through profit or loss are measured at fair value with changes in fair value recognized in profit or loss. ii. Available-for-sale Available-for-sale non-derivative available-for-sale held-to-maturity Available-for-sale available-for-sale iii. Held-to-maturity Non-derivative held-to-maturity After initial measurement, held-to-maturity iv. Notes, accounts and other receivables Notes and accounts receivable are creditors’ rights as a result of sales of goods or services. Other receivables are any receivable not classified as notes and accounts receivable. Notes, accounts and other receivables are initially measured and recognized at their fair values and subsequently measured at amortized cost using the effective interest method, less impairment losses. If the effect of discounting is immaterial, the short term notes, accounts and other receivables are measured at their nominal amount. 2018 and 2019 The Company determines the classification of its financial assets at initial recognition. In accordance with IFRS 9, financial assets of the Company are classified as financial assets at fair value through profit or loss, financial assets at fair value through other comprehensive income, and financial assets measured at amortized cost. i. Financial assets at fair value through profit or loss Financial assets that are not measured at amortized cost or at fair value through other comprehensive income are recognized initially at fair value and subsequently measured at fair value with changes in fair value recognized in profit or loss. ii Financial assets at fair value through other comprehensive income At initial recognition, the Company may make an irrevocable election to present in other comprehensive income subsequent changes in the fair value of an investment in an equity instrument that is not held for trading. When there is a disposal of such equity instrument, accumulated amounts presented in other comprehensive income are not subsequently transferred to profit or loss but are transferred directly to the retained earnings. The debt instruments are measured at fair value through other comprehensive income if both of the following conditions are met: (i) the financial asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets and (ii) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Subsequent changes in the fair value of such financial assets at fair value through other comprehensive income are recognized in other comprehensive income. Before derecognition, impairment gains or losses, interest revenue and foreign exchange gains and losses are recognized in profit or loss. When the financial assets are derecognized the cumulative gain or loss previously recognized in other comprehensive income is reclassified from other comprehensive income to profit or loss as a reclassification adjustment. iii. Financial assets measured at amortized cost The financial assets are measured at amortized cost (including cash and cash equivalent, notes, accounts and other receivables and other financial assets) if both of the following conditions are met. (i) the financial asset is held within a business model whose objective is to hold financial assets in order to collect contractual cash flows; and (ii) the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Subsequent to initial recognition for financial assets measured at amortized cost, interest income, measured by the effective interest method amortization process, and impairment losses are recognized during circulation period. Gains and losses are recognized in profit or loss when the financial assets are derecognized. b. Derecognition of financial assets A financial asset is derecognized when: i. the contractual rights to receive cash flows from the asset have expired; ii. the Company has transferred assets and substantially all the risks and rewards of the asset have been transferred; or iii. the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset. 2017 On derecognition of a financial asset in its entirety, the difference between the carrying amount and the consideration received or to be received including any cumulative gain or loss that had been recognized in other comprehensive income is recognized in profit or loss. If the transferred asset is part of a larger financial asset and the part transferred qualifies for derecognition in its entirety, the Company allocates the previous carrying amount of the larger financial asset between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts on the date of the transfer. Any cumulative gain or loss that had been recognized in other comprehensive income is allocated between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts. The difference between the carrying amount allocated to the part derecognized and the sum of the consideration received for the part derecognized and any cumulative gain or loss allocated that had been recognized in other comprehensive income, is recognized in profit or loss. 2018 and 2019 On derecognition of a financial asset in its entirety, the difference between the carrying amount and the consideration received or to be received including any cumulative gain or loss that had been recognized in other comprehensive income is recognized in profit or loss (for debt instruments) or directly in retained earnings (for equity instruments). If the transferred asset is part of a larger financial asset and the part transferred qualifies for derecognition in its entirety, the Company allocates the previous carrying amount of the larger financial asset between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts on the date of the transfer. Any cumulative gain or loss that had been recognized in other comprehensive income is allocated between the part that continues to be recognized and the part that is derecognized, based on the relative fair values of those parts. The difference between the carrying amount allocated to the part derecognized and the sum of the consideration received for the part derecognized and any cumulative gain or loss allocated that had been recognized in other comprehensive income, is recognized in profit or loss or directly in retained earnings. c. Impairment policy 2017 The carrying amount of a financial asset is reduced as a result of impairment, except for accounts receivable for which the carrying amount is reduced through use of an allowance account. When an account receivable is deemed to be uncollectible, it is written off from the allowance account. i. Notes, accounts and other receivables The Company first assesses at each reporting date whether objective evidence of impairment exists for notes, accounts and other receivables that are individually significant. If there is objective evidence that an impairment loss has occurred, the amount of impairment loss is assessed individually. For notes, accounts and other receivables other than those mentioned above, the Company groups those assets with similar credit risk characteristics and collectively assesses them for impairment. If, in a subsequent period, the amount of the impairment loss decreases, and the decrease can be related objectively to an event occurring after the impairment was recognized, the previously recognized impairment loss is reversed and recognized through profit or loss. The reversal shall not result in a carrying amount of notes, accounts and other receivables that exceeds what the amortized cost would have been had the impairment not been recognized at the date the impairment is reversed. ii. Other financial assets The Company assesses, at each reporting date, whether there is objective evidence that a financial asset or a group of financial assets is impaired. A financial asset or a group of financial assets is deemed to be impaired if, and only if, there is objective evidence of impairment as a result of one or more loss events that has occurred since the initial recognition of the asset (an incurred “loss event”) and that loss event has an impact on the estimated future cash flows of the individual financial asset or a group of financial assets. For the financial assets carried at amortized cost, the amount of the impairment loss is measured as the difference between the carrying amount and the present value of estimated future cash flows, discounted at the original effective interest rate. For equity investments classified as available-for-sale, available-for-sale 2018 and 2019 The Company measures, at each reporting date, an allowance for expected credit losses (ECLs) for debt instrument investments measured at fair value through other comprehensive income and financial assets measured at amortized cost by assessing reasonable and supportable information including forward-looking information. Where the credit risk on a financial asset has not increased significantly since initial recognition, the loss allowance is measured at an amount equal to 12-month For notes, accounts receivable and contract assets, the Company applies a simplified approach in calculating ECLs. Therefore, the Company does not track changes in credit risk, but instead recognizes a loss allowance based on lifetime ECLs at each reporting date. ECLs are measured based on the Company’s historical credit loss experience and customers’ current financial condition, adjusted for forward-looking factors, such as customers’ economic environment. Financial Liabilities a. Classification and subsequent measurement 2017 The Company classifies the instrument issued as a financial liability or an equity instrument in accordance with the substance of the contractual arrangement and the definitions of a financial liability and an equity instrument. i. Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. Gains or losses on the subsequent measurement including interest paid are recognized in profit or loss. ii. Financial liabilities carried at amortized cost Financial liabilities measured at amortized cost include interest bearing loans and borrowings that are subsequently measured using the effective interest method after initial recognition. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the effective interest method amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or transaction costs. 2018 and 2019 The Company classifies the instrument issued as a financial liability or an equity instrument in accordance with the substance of the contractual arrangement and the definitions of a financial liability and an equity instrument. i. Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. Excluding changes in own credit risk, gains or losses on the subsequent measurement including interest paid are recognized in profit or loss. ii. Financial liabilities measured at amortized cost Financial liabilities measured at amortized cost include interest bearing loans and borrowings that are subsequently measured using the effective interest method after initial recognition. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the effective interest method amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or transaction costs. b. Derecognition of financial liabilities A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified (whether or not attributable to the financial difficulty of the debtor), such an exchange or modification is treated as a derecognition of the original liability and the recognition of a new liability, and the difference in the respective carrying amounts and the consideration paid, including any non-cash |
Hedge Accounting | (11) Hedge Accounting Cash flow hedges The Company manages exposures arising from foreign currency exchange risk. With the adoption of IFRS 9, the Company designates a hedging relationship between the hedging instrument and the hedged item with the existence of an economic relationship and determines the hedge ratio to meet the hedge effectiveness. The Company designates certain hedging instruments to partially hedge the foreign currency exchange rate risks associated with certain highly probable forecast transactions. The separate component of equity associated with the hedged item is adjusted to the lower of the following (in absolute amounts): a. the cumulative gain or loss on the hedging instrument from inception of the hedge; and b. the cumulative change in fair value (present value) of the expected future cash flows on the hedged item from inception of the hedge. The portion of the gain or loss on the hedging instrument that is determined to be an effective hedge is recognized in other comprehensive income, whereas the ineffective portion of the change in the fair value of the hedging instrument is recognized directly in profit or loss. If a hedge of a forecast transaction subsequently results in the recognition of a non-financial non-financial The Company prospectively discontinues hedge accounting only when the hedging relationship ceases to meet the qualifying criteria; for instance when the hedging instrument expires or is sold, terminated or exercised. |
Inventories | (12) Inventories Inventories are accounted for on a perpetual basis. Raw materials are stated at actual purchase costs, while the work in process and finished goods are stated at standard costs and subsequently adjusted to weighted-average costs at the end of each month. The cost of work in progress and finished goods comprises raw materials, direct labor, other direct costs and related production overheads. Allocation of fixed production overheads to the costs of conversion is based on the normal capacity of the production facilities. Cost associated with underutilized capacity is expensed as incurred. Inventories are valued at the lower of cost and net realizable value item by item. Net realizable value is the estimated selling price in the ordinary course of business less the estimated costs of completion and the estimated costs necessary to make the sale. |
Investments Accounted For Under the Equity Method | (13) Investments Accounted For Under the Equity Method The Company’s investments in associates and joint ventures are accounted for using the equity method other than those that meet the criteria to be classified as non-current An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of an entity, but is not control or joint control over those policies. A joint venture is a type of joint arrangement whereby the Company that has joint control of the arrangement has rights to the net assets of the joint venture. Joint control is the contractually agreed sharing of control of an arrangement where no single party controls the arrangement on its own, which exists only when decisions about the relevant activities require unanimous consent of the parties sharing control. Any difference between the acquisition cost and the Company’s share of the net fair value of the identifiable assets and liabilities of associates and joint ventures is accounted for as follows: a. Any excess of the acquisition cost over the Company’s share of the net fair value of the identifiable assets and liabilities of an associate or a joint venture at the date of acquisition is recognized as goodwill and is included in the carrying amount of the investment. Amortization of goodwill is not permitted. b. Any excess of the Company’s share of the net fair value of the identifiable assets and liabilities of an associate or a joint venture over the acquisition cost, after reassessing the fair value, is recognized as a gain in profit or loss on the acquisition date. Under the equity method, the investments in associates and joint ventures are carried on the balance sheet at cost plus post acquisition changes in the Company’s share of profit or loss and other comprehensive income of associates and joint ventures. The Company’s share of changes in associates’ and joint ventures’ profit or loss and other comprehensive income are recognized directly in profit or loss and other comprehensive income, respectively. Distributions received from an associate or a joint venture reduce the carrying amount of the investment. Any unrealized gains and losses resulting from transactions between the Company and the associate or the joint venture are eliminated to the extent of the Company’s interest in the associate or the joint venture. Financial statements of associates and joint ventures are prepared for the same reporting period as the Company. Where necessary, adjustments are made to bring the accounting policies in line with those of the Company. Upon an associate’s issuance of new shares, if the Company takes up more shares than its original proportionate holding while maintaining its significant influence over that associate, such increase would be accounted for as an acquisition of an additional equity interest in the associate. Upon an associate’s issuance of new shares, if the Company does not take up proportionate shares and reduces its stockholding percentage while maintaining its significant influence over that associate, the Company will treat the transaction as deemed disposal and reclassify to profit or loss the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest where appropriate. The Company ceases to use the equity method upon loss of significant influence over an associate. Any difference between the carrying amount of the investment in an associate upon loss of significant influence and the fair value of the retained investment plus proceeds from disposal will be recognized in profit or loss. If an investment in an associate becomes an investment in a joint venture or an investment in a joint venture becomes an investment in an associate, the Company continues to apply the equity method and does not remeasure the retained interest. The Company determines at each reporting date whether there is any objective evidence that the investments in associates and joint ventures are impaired. An impairment loss, being the difference between the recoverable amount of the associate or joint venture and its carrying amount, is recognized in profit or loss in the statement of comprehensive income and forms part of the carrying amount of the investments. |
Property, Plant and Equipment | (14) Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation and accumulated impairment losses, if any, and any borrowing costs incurred for long-term construction projects are capitalized if the recognition criteria are met. Significant renewals, improvements and major inspections meeting the recognition criteria are treated as capital expenditures, and the carrying amounts of those replaced parts are derecognized. Maintenance and repairs are recognized in expenses as incurred. Any gain or loss arising from derecognition of the assets is recognized in other operating income and expenses. Depreciation is calculated on a straight-line basis over the estimated useful lives. A significant part of an item of property, plant and equipment which has a different useful life from the remainder of the item is depreciated separately. The depreciation methods, useful lives and residual values for the assets are reviewed at each fiscal year end, and the changes from the previous estimation are recorded as changes in accounting estimates. Except for land, which is not depreciated, the estimated useful lives of the assets are as follows: Buildings 7~56 years Machinery and equipment 6~9 years Transportation equipment 5~7 years Furniture and fixtures 1~9 years Leasehold improvement The shorter of lease terms or useful lives |
Lease | (15) Lease The summary of significant accounting policies applying in 2019 is as follows: A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange of consideration, and to obtain substantially all economic benefits from use of the identified asset. The Company accounts for a lease contract as a single lease and separates the lease and non-lease The Company as a lessor The Company recognizes lease payments from operating leases as rental income on a straight-line basis over the term of the lease. The Company as a lessee At the commencement date of a lease, a lessee is required to recognize right-of-use low-value a. At the commencement date, lease liabilities should be recognized and measured at the present value of the lease payments that have not been paid at that date, using the Company’s incremental borrowing rate. The payments comprise: i. fixed payments less any lease incentives receivable; ii. variable lease payments that depend on an index or rate; iii. amounts expected to be payable by the Company under residual value guarantees; iv. the exercise price of a purchase option if the Company is reasonably certain to exercise; and v. payments for terminating the lease unless it is reasonably certain that early termination will not occur. Lease liabilities are measured in subsequent periods using the effective interest method, and the interest expenses are recognized over the lease terms. In addition, the carrying amount of lease liabilities is remeasured if there is a modification which is not accounted as a separate lease, a change in the lease term, a change in the lease payments (e.g., changes to future payments resulting from a change in an index or rate used to determine such lease payments) or a change in the assessment of an option to purchase the underlying asset. b. At the commencement date, the right-of-use i. the amount of the initial measurement of the lease liabilities; ii. any lease payments made at or before the commencement date; and iii. any initial direct costs incurred. Subsequent to initial recognition, the right-of-use Right-of-use right-of-use right-of-use The Company presents right-of-use low-value |
Intangible Assets | (16) Intangible Assets Intangible assets acquired separately are measured on initial recognition at cost. The cost of intangible assets acquired in a business combination is its fair value as at the date of acquisition. Following initial recognition, intangible assets are carried at cost less any accumulated amortization and accumulated impairment losses, if any. Internally generated intangible assets which fail to meet the recognition criteria are not capitalized and the expenditures are reflected in profit or loss in the period incurred. The useful lives of intangible assets are assessed as either finite or indefinite. Intangible assets with finite useful lives are amortized over the useful lives and assessed for impairment whenever there is an indication that the intangible assets may be impaired. The amortization period and the amortization method for an intangible asset with a finite useful life are reviewed at least at the end of each fiscal year. Changes in the expected useful life or the expected pattern of consumption of future economic benefits embodied in the asset is accounted for by changing the amortization period or method, as appropriate, and is treated as changes in accounting estimates. Intangible assets with indefinite useful lives are not amortized, but are tested for impairment annually, either individually or at the CGU level. The assessment of indefinite useful life is reviewed annually to determine whether the indefinite useful life continues to be supportable. If not, the change in useful life from indefinite to finite is made on a prospective basis. Gains or losses arising from derecognition of an intangible asset are recognized in other operating income and expenses. Accounting policies of the Company’s intangible assets are summarized as follows: a. Goodwill arising from business combinations is not amortized, and is tested for impairment annually or more frequently if events or changes in circumstances suggest that the carrying amount may not be recoverable. If an event occurs or circumstances change which indicates that the goodwill is impaired, an impairment loss is recognized. Goodwill impairment losses cannot be reversed once recognized. b. Software is amortized over the contract term or estimated useful life (3~6 years) on a straight-line basis. c. Patent and technology license fee: Upon signing of contract and obtaining the right to intellectual property, any portion attributable to non-cancellable non-current. d. Others are mainly the intellectual property license fees, amortized over the shorter of the contract term or estimated useful life (3 years) of the related technology on a straight-line basis. |
Impairment of Non-Financial Assets | (17) Impairment of Non-Financial Assets The Company assesses at each reporting date whether there is an indication that an asset in the scope of IAS 36 “Impairment of Assets” (IAS 36) may be impaired. If any indication exists, the Company completes impairment testing for the CGU to which the individual assets belong. Where the carrying amount of an asset or CGU exceeds its recoverable amount, the asset is considered impaired and is written down to its recoverable amount. The recoverable amount of an individual asset or a CGU is the higher of its fair value less costs of disposal and its value in use. If circumstances indicate that previously recognized impairment losses may no longer exist or may have decreased at each reporting date, the Company re-assesses A CGU, or group of CGUs, to which goodwill has been allocated is tested for impairment annually at the same time every year, irrespective of whether there is any indication of impairment. Where the carrying amount of a CGU (including the carrying amount of goodwill) exceeds its recoverable amount, the CGU is considered impaired. If an impairment loss is to be recognized, it is first allocated to reduce the carrying amount of any goodwill allocated to the CGU (group of units), then to the other assets of the unit (group of units) pro rata on the basis of the carrying amount of each asset in the unit (group of units). Impairment losses relating to goodwill cannot be reversed in future periods. The recognition or reversal of impairment losses is classified as other operating income and expenses. |
Bonds | (18) Bonds Convertible bonds UMC evaluates the terms of the convertible bonds issued to determine whether it contains both a liability and an equity component. Furthermore, UMC assesses if the economic characteristics and risks of the put and call options embedded in the convertible bonds are closely related to the economic characteristics and risk of the host contract before separating the equity element. For the liability component excluding the derivatives, its fair value is determined based on the effective interest rate applied at that time by the market to instruments of comparable credit status. The liability component is classified as a financial liability measured at amortized cost using the effective interest method before the instrument is converted or settled. For the embedded derivative that is not closely related to the host contract, it is classified as a liability component and subsequently measured at fair value through profit or loss unless it qualifies as an equity component. The equity component is recognized initially at the difference between the fair value of the compound financial instrument as a whole and the fair value of the liability component. Its carrying amount is not remeasured in the subsequent accounting periods. If the convertible bond issued does not have an equity component, it is accounted for as a hybrid instrument in accordance with the requirements under IFRS 9 (before January 1, 2018: IAS 39). If the convertible bondholders exercise their conversion right before maturity, UMC shall adjust the carrying amount of the liability component. The adjusted carrying amount of the liability component at conversion and the carrying amount of equity component are credited to common stock and additional paid-in In addition, the liability component of convertible bonds is classified as a current liability if within 12 months the bondholders may exercise the put right. After the put right expires, the liability component of the convertible bonds should be reclassified as a non-current non-current |
Post-Employment Benefits | (19) Post-Employment Benefits Under defined contribution pension plans, the contribution payable to the plan in exchange for the service rendered by an employee during a period shall be recognized as an expense. The contribution payable, after deducting any amount already paid, is recognized as a liability. Under defined benefit pension plans, the net defined benefit liability (asset) shall be recognized as the amount of the present value of the defined benefit obligation, deducting the fair value of any plan assets and adjusting for any effect of the asset ceiling. Service cost and net interest on the net defined benefit liability (asset) are recognized as expenses in the period of service. Remeasurement of the net defined benefit liability (asset), which comprises actuarial gains and losses, the return on plan assets and any change in the effect of the asset ceiling, excluding any amounts included in net interest, is recognized in other comprehensive income in the period in which they occur. Remeasurement recognized in other comprehensive income is reflected immediately in retained earnings and shall not be reclassified to profit or loss in a subsequent period. |
Government Grants | (20) Government Grants In accordance with IAS 20 “Accounting for Government Grants and Disclosure of Government Assistance”, the Company recognizes the government grants when there is reasonable assurance that such grants will be received and the conditions attaching to them will be complied with. An asset related government grant is recorded as deferred income and recognized in profit or loss on a straight-line basis over the useful lives of the assets. An expense related government grant is recognized in profit or loss on a systematic basis over the periods in which the Company recognizes as expenses the related costs for which the grant is intended to compensate. A government grant that compensates for expenses or losses already incurred or for the purpose of giving immediate financial support to the Company with no future related costs is recognized in profit or loss when it becomes receivable. |
Treasury Stock | (21) Treasury Stock UMC’s own equity instruments repurchased (treasury stocks) are recognized at repurchase cost and deducted from equity. No gain or loss shall be recognized in profit or loss on the purchase, sale, issue or cancellation of UMC’s own equity instruments. Any difference between the carrying amount and the consideration is recognized in equity. |
Share-Based Payment Transactions | (22) Share-Based Payment Transactions The cost of equity-settled transactions between the Company and its employees is measured at the fair value using an appropriate pricing model by reference to the market price of the equity instruments on the grant date. The cost of equity-settled transactions is recognized, together with a corresponding increase in equity, over the periods in which the performance and/or service conditions are being fulfilled. The cumulative expense recognized for equity-settled transactions at each reporting date reflects the extent to which the vesting period has passed and the Company’s best estimate of the quantity of equity instruments that will ultimately vest. The charge to profit or loss for a period represents the movement in cumulative expense recognized between the beginning and the end of that period. No expense will be recognized for awards that do not ultimately vest, except for equity-settled transactions for which vesting is conditional upon a market or non-vesting non-vesting Where the terms of an equity-settled transaction award are modified, the minimum expense recognized is the expense as if the terms had not been modified, if the original terms of the award are met. An additional expense is recognized for any modification that increases the total fair value of the share-based payment transaction, or is otherwise beneficial to the employee as measured at the date of modification. Where an equity-settled award is cancelled, it is treated as if it fully vests on the date of cancellation, and any expense not yet recognized for the award is recognized immediately. This includes any award where non-vesting |
Revenue Recognition | (23) Revenue Recognition 2017 Revenue is recognized to the extent that it is probable that the economic benefits will flow to the Company and the revenue can be reliably measured. Revenue is measured at the fair value of the consideration received or receivable. The specific criteria described below must also be met before revenue is recognized. Sales revenue The Company manufactures semiconductors for creditworthy customers based on their design specifications, pursuant to manufacturing agreements and/or purchase orders at contractual prices. The Company ships wafers mainly under the trade term, Free Carrier (FCA), through which the title and risk of loss for the wafers are transferred to the customers upon delivery to carriers approved by the customers. Sales revenue is recognized at this point, having also fulfilled all of the following criteria pursuant to IAS 18, paragraph 14: a. the significant risks and rewards of ownership of the goods have been transferred to the customer; b. neither continuing managerial involvement to the degree usually associated with ownership nor effective control over the goods sold have been retained; c. the amount of revenue can be measured reliably; d. it is probable that the economic benefits associated with the transaction will flow to the entity; and e. the costs incurred or to be incurred in respect of the transaction can be measured reliably. Sales revenue is measured at the fair value of the consideration received or receivable, net of sales returns and discounts, which are estimated based on customer complaints, historical experience and other known factors. Sales returns and discounts are recorded in the same period in which sales are made. 2018 and 2019 Revenue from Contracts with Customers The Company recognizes revenue from contracts with customers by applying the following steps of IFRS 15 “Revenue from Contracts with Customers”: a. identify the contract with a customer; b. identify the performance obligations in the contract; c. determine the transaction price; d. allocate the transaction price to the performance obligations in the contract; and e. recognize revenue when (or as) the entity satisfies its performance obligations. Revenues on the Company’s contracts with customers for the sales of wafers and joint technology development are recognized as the Company satisfies its performance obligations to customers upon transfer of control of promised goods and services. The Company recognizes revenue at transaction price that are determined using contractual prices reduced by sales returns and allowances which the Company estimates based on historical experience having determined that a significant reversal in the amount of cumulative revenue recognized are not probable to occur. The Company recognizes refund liabilities for estimated sales return and allowances based on the customer complaints, historical experience, and other known factors. The Company recognizes accounts receivable when the Company transfers control of the goods or services to customers and has a right to an amount of consideration that is unconditional. Such accounts receivable are short term and do not contain a significant financing component. For certain contracts that do not provide the Company unconditional rights to the consideration, and the transfer of control of the goods or services has been satisfied, the Company recognizes contract assets and revenues. Consideration received from customers prior to the Company having satisfied its performance obligations are accounted for as contract liabilities which are transferred to revenue after the performance obligations are satisfied. The Company recognizes costs to fulfill a contract when the costs relate directly to the contract, generate or enhance resources to be used to satisfy performance obligations in the future, and are expected to be recovered. The costs and revenues are recognized when the Company satisfies its performance obligations to customers upon transfer of control of promised goods and services. Interest income 2017 For financial assets measured at amortized cost (including held-to-maturity 2018 and 2019 For financial assets measured at amortized cost and financial assets at fair value through other comprehensive income, interest income is recorded using the effective interest method and recognized in profit or loss. Dividends Revenue is recognized when the Company’s right to receive the dividends is established, which is generally when stockholders approve the dividend. |
Income Tax | (24) Income Tax Income tax expense (benefit) is the aggregate amount of current income tax and deferred income tax included in the determination of profit or loss for the period. Current income tax Current income tax assets and liabilities for the current period and prior periods are measured using the tax rates and tax laws that have been enacted or substantively enacted by the end of the reporting period. Current income tax relating to items recognized directly in other comprehensive income or equity is recognized in other comprehensive income or equity rather than profit or loss. Undistributed earnings, calculated based on Business Entity Accounting Act are subject to a tax in accordance with the Income Tax Law of the R.O.C. Accordingly, the undistributed tax impact is provided in the period the income is earned, assuming that no earnings are distributed. Any reduction in the liability will be recognized when the income is distributed upon the stockholders’ approval in the subsequent year. Tax on undistributed earnings may be offset by the Company’s available tax credits carried forward, where applicable. As such, the incremental tax accrued on undistributed earnings may be offset by a corresponding reduction in deferred income tax assets, where applicable. Deferred income tax Deferred income tax is determined using the liability method on temporary differences between the tax bases of assets and liabilities and their carrying amounts in financial statements at the reporting date. Deferred tax liabilities are recognized for all taxable temporary differences, except: a. When the deferred tax liability arises from the initial recognition of goodwill or of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; b. In respect of taxable temporary differences associated with investments in subsidiaries, associates and joint ventures, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Deferred tax assets are recognized for all deductible temporary differences, the carryforward of unused tax losses and unused tax credits, to the extent that it is probable that future taxable profit will be available against which the deductible temporary differences and the carryforward of unused tax losses and unused tax credits can be utilized, except: a. Where the deferred tax asset relating to the deductible temporary difference arises from the initial recognition of an asset or liability in a transaction that is not a business combination and, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss; b. In respect of deductible temporary differences associated with investments in subsidiaries, associates and joint ventures, deferred tax assets are recognized only to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which the temporary differences can be utilized. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the year when the asset is realized or the liability is settled, based on tax rates and tax laws that have been enacted or substantively enacted at the reporting date. The measurement of deferred tax assets and liabilities reflects the tax consequences that would follow the manner in which the Company expects, at the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities. Deferred tax relating to items recognized outside profit or loss is not recognized in profit or loss but rather in other comprehensive income or directly in equity. Deferred tax assets are reassessed and recognized at each reporting date. Unrecognized deferred tax assets are reassessed at each reporting date and are recognized to the extent that it has become probable that future taxable profits will allow the deferred tax assets to be recovered. Deferred tax assets and liabilities offset each other, if a legally enforceable right exists to set off current income tax assets against current income tax liabilities, and the deferred taxes relate to the same taxable entity and the same taxation authority. Tax benefits acquired as part of a business combination, but not satisfying the criteria for separate recognition at the acquisition date, might be realized and recognized subsequently as follows: a. Acquired deferred tax benefits recognized within the measurement period that result from new information about facts and circumstances that existed at the acquisition date shall be applied to reduce the carrying amount of any goodwill related to that acquisition. If the carrying amount of that goodwill is nil, any remaining deferred tax benefits shall be recognized in profit or loss; b. All other acquired deferred tax benefits realized shall be recognized in profit or loss, other comprehensive income or equity. The Company has considered whether it is probable that a taxation authority will accept the uncertain tax treatments used in its income tax filings. If the Company concludes that it is probable that the taxation authority will accept an uncertain tax treatment, the Company determines the taxable profit, tax bases, unused tax losses, unused tax credits or tax rates consistently with the tax treatments used or planned to be used in its income tax filings. If it is not probable that the taxation authority will accept an uncertain tax treatment, the Company makes estimates using either the most likely amount or the expected value of the tax treatment, depending on which method the Company expects to better predict the resolution of the uncertainty. The Company reassesses a judgement or estimate if the facts and circumstance change. |
Earnings per Share | (25) Earnings per Share Earnings per share is computed according to IAS 33 “Earnings per Share”. Basic earnings per share is computed by dividing net income by the weighted-average number of ordinary shares outstanding during the current reporting period. Diluted earnings per share is computed by taking basic earnings per share into consideration plus additional ordinary shares that would have been outstanding if the dilutive share equivalents had been issued. Net income is also adjusted for interest and other income or expenses derived from any underlying dilutive share equivalents. The weighted-average of outstanding shares is adjusted retroactively for stock dividends and employee stock compensation issues. |
New Accounting Pronouncement _2
New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Summary of Explanation of difference between operating lease commitments disclosed applying IAS 17 and lease liabilities recognised at date of initial application of IFRS 16 | The difference between the present value of operating lease commitments under IAS 17 as of December 31, 2018 discounted at the lessee’s incremental borrowing rate and lease liabilities recognized on January 1, 2019 is explained as below: Operating lease commitments under IAS 17 as of December 31, 2018 $ 7,408,369 Present value discounted at the incremental borrowing rate on January 1, 2019 $ 5,997,551 Add: An extension option reasonably certain to be exercised 8,906 Lease liabilities as of January 1, 2019 $ 6,006,457 |
Summary of Significant Accoun_3
Summary of Significant Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Consolidated Entities | The consolidated entities as of December 31, 2018 and 2019 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2018 2019 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED MICROELECTRONICS (EUROPE) B.V. Marketing support activities 100.00 100.00 UMC UMC CAPITAL CORP. Investment holding 100.00 100.00 UMC GREEN EARTH LIMITED (GE) Investment holding 100.00 100.00 UMC TLC CAPITAL CO., LTD. (TLC) Venture capital 100.00 100.00 UMC UMC INVESTMENT (SAMOA) LIMITED Investment holding 100.00 100.00 UMC FORTUNE VENTURE CAPITAL CORP. (FORTUNE) Consulting and planning for venture capital 100.00 100.00 UMC UMC GROUP JAPAN IC Sales 100.00 100.00 UMC UMC KOREA CO., LTD. Marketing support activities 100.00 100.00 UMC OMNI GLOBAL LIMITED (OMNI) Investment holding 100.00 100.00 UMC SINO PARAGON LIMITED Investment holding 100.00 100.00 UMC BEST ELITE INTERNATIONAL LIMITED (BE) Investment holding 100.00 100.00 UMC UNITED SEMICONDUCTOR JAPAN CO., LTD. Sales and manufacturing of integrated circuits — 100.00 UMC, FORTUNE and TLC NEXPOWER TECHNOLOGY CORP. (NEXPOWER) Sales and manufacturing of solar power batteries 93.36 93.36 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 78.47 80.49 UMC CAPITAL CORP. UMC CAPITAL (USA) Investment holding 100.00 100.00 TLC SOARING CAPITAL CORP. Investment holding 100.00 100.00 SOARING CAPITAL CORP. UNITRUTH ADVISOR (SHANGHAI) CO., LTD. Investment holding and advisory 100.00 100.00 GE UNITED MICROCHIP CORPORATION Investment holding 100.00 100.00 FORTUNE TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) Energy technical services 100.00 100.00 TERA ENERGY EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) Investment holding 100.00 100.00 EVERRICH-HK EVERRICH (SHANDONG) ENERGY CO., LTD. Solar engineering integrated design services 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (NEW YORK) Research and development 100.00 100.00 OMNI UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 OMNI UMC TECHNOLOGY JAPAN CO., LTD. Semiconductor manufacturing technology development and consulting services 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 100.00 WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Sales and marketing service 100.00 100.00 NEXPOWER SOCIALNEX ITALIA 1 S.R.L. Photovoltaic power plant 100.00 — BE INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) Investment holding 100.00 100.00 INFOSHINE OAKWOOD ASSOCIATES LIMITED (OAKWOOD) Investment holding 100.00 100.00 OAKWOOD HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) Sales and manufacturing of integrated circuits 98.14 98.14 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. Integrated circuits design services 100.00 100.00 UNITED MICROCHIP CORPORATION and HJ UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) Sales and manufacturing of integrated circuits 65.22 65.22 |
Estimated Useful Lives of Property, Plant and Equipment | Except for land, which is not depreciated, the estimated useful lives of the assets are as follows: Buildings 7~56 years Machinery and equipment 6~9 years Transportation equipment 5~7 years Furniture and fixtures 1~9 years Leasehold improvement The shorter of lease terms or useful lives |
Contents of Significant Accou_2
Contents of Significant Accounts (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Statement [Line Items] | |
Cash and Cash Equivalents | (1) Cash and Cash Equivalents As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Cash on hand and petty cash $ 6,091 $ 6,074 Checking and savings accounts 25,021,265 26,384,925 Time deposits 49,139,549 59,966,481 Repurchase agreements collateralized by government bonds and corporate notes 9,494,834 9,134,997 Total $ 83,661,739 $ 95,492,477 |
Aging Analysis of Accounts Receivables, Net | Aging analysis of accounts receivable, net: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Neither past due nor impaired $ 18,271,304 $ 21,924,797 Past due but not impaired: £ 3,407,690 2,364,311 31 to 60 days 739,054 204,791 61 to 90 days 545,366 85,131 91 to 120 days 365,007 138,788 ³ 407,568 797 065 Subtotal 5,464,685 3,5 90 08 Total $ 23,735,989 $ 25, 514 883 |
Movement of Loss Allowance | Movement of loss allowance for accounts receivable: For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Beginning balance $ 39,578 $ 48,152 Net charge for the period 8,574 573 258 Ending balance $ 48,152 $ 621 41 |
Inventories, Net | (4) Inventories, Net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Raw materials $ 3,766,056 $ 5,102,571 Supplies and spare parts 3,133,737 3,548,376 Work in process 10,034,488 11,309,718 Finished goods 1,268,838 1,754,137 Total $ 18,203,119 $ 21,714,802 |
Summary of Fair Value of Each Investment in Equity Instrument | The fair value of each investment in equity instrument to be measured at fair value through other comprehensive income is as follows: As of December 31, Type of securities Name of securities 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Common stock SILICON INTEGRATED SYSTEMS CORP. 1,032,930 961,898 Common stock UNIMICRON HOLDING LIMITED 561,261 795,795 Common stock MIE FUJITSU SEMICONDUCTOR LIMITED 2,220,103 — Common stock UNIMICRON TECHNOLOGY CORP. 4,373,833 8,237,712 Common stock ITE TECH. INC. 424,383 616,333 Common stock NOVATEK MICROELECTRONICS CORP. 2,335,131 3,601,365 Common stock SHIN-ETSU HANDOTAI TAIWAN CO., LTD. 453,810 334,635 Preferred stock MTIC HOLDINGS PTE. LTD. 184,026 175,494 |
Summary of income recognized in profit or loss and other comprehensive income | b. Amounts recognized in profit or loss and other comprehensive income in relation to the financial assets at fair value through other comprehensive income are listed below: For the years 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Dividend income recognized in profit or loss Held at end of period $ 268,406 $ 365,052 Derecognized during the period — — Total $ 268,406 $ 365,052 |
Summary of disposed and derecognized partial equity instrument investments measured at fair value through comprehensive income | c. In consideration of the Company’s investment strategy, the Company disposed and derecognized partial equity instrument investments measured at fair value through other comprehensive income. Details on derecognition of such investments for the years ended December 31, 2018 and 2019 are as follow: For the years 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Fair value on the date of sale $ — $ 2,348,454 Cumulative gains (losses) reclassified to retained earnings due to derecognition $ — $ (551,903 ) |
Details of Investments Accounted for Under the Equity Method | (6) Investments Accounted For Under the Equity Method a. Details of investments accounted for under the equity method are as follows: As of December 31, 2018 2019 Investee companies Amount Percentage of Amount Percentage of NT$ NT$ (In Thousands) (In Thousands) Listed companies CLIENTRON CORP. $ 249,663 22.39 $ 276,515 21.90 FARADAY TECHNOLOGY CORP. (FARADAY) (Note A) 1,483,111 13.78 1,473,028 13.78 Unlisted companies MTIC HOLDINGS PTE. LTD. 3,026 45.44 18,157 45.44 WINAICO IMMOBILIEN GMBH (Note B) — 44.78 — 44.78 PURIUMFIL INC. — — 7,164 44.45 UNITECH CAPITAL INC. 568,005 42.00 642,660 42.00 TRIKNIGHT CAPITAL CORPORATION 1,520,575 40.00 2,281,631 40.00 HSUN CHIEH INVESTMENT CO., LTD. 1,608,551 36.49 1,686,502 36.49 YANN YUAN INVESTMENT CO., LTD. 2,032,013 30.87 2,761,821 30.87 HSUN CHIEH CAPITAL CORP. 161,319 30.00 122,060 30.00 VSENSE CO., LTD. 31,544 26.89 592 25.90 UNITED LED CORPORATION HONG KONG LIMITED 167,953 25.14 121,973 25.14 TRANSLINK CAPITAL PARTNERS I, L.P. (Note C) 120,440 10.38 172,414 10.38 WINAICO SOLAR PROJEKT 1 GMBH (Note B) — 50.00 — — YUNG LI INVESTMENTS, INC. 2,213 45.16 — — Total $ 7,948,413 $ 9,564,517 Note A: Beginning from June 2015, the Company accounts for its investment in FARADAY as an associate given the fact that the Company obtained the ability to exercise significant influence over FARADAY through representation on its Board of Directors. Note B: WINAICO SOLAR PROJEKT 1 GMBH and WINAICO IMMOBILIEN GMBH are joint ventures to the Company. Note C: The Company follows international accounting practices in equity accounting for limited partnerships and uses the equity method to account for these investees. |
Property, Plant and Equipment | (7) Property, Plant and Equipment 2018 Cost: Land Buildings Machinery Transportation Furniture and Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 1,314,402 $ 38,073,660 $ 826,268,919 $ 75,782 $ 7,675,798 $ 52,557 $ 20,761,439 $ 894,222,557 Additions — — — — — — 17,579,689 17,579,689 Disposals — (64,878 ) (2,330,437 ) (18,363 ) (40,199 ) — — (2,453,877 ) Disposal of a subsidiary — — (224,895 ) — (6,515 ) (2,226 ) — (233,636 ) Transfers and reclassifications — 375,854 27,447,023 8,884 433,665 2,049 (27,693,591 ) 573,884 Exchange effect — (78,334 ) 2,527,895 52 (5,848 ) 1,069 (96,774 ) 2,348,060 As of December 31, 2018 $ 1,314,402 $ 38,306,302 $ 853,688,505 $ 66,355 $ 8,056,901 $ 53,449 $ 10,550,763 $ 912,036,677 Accumulated Depreciation and Impairment: Land Buildings Machinery and Transportation Furniture and Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ — $ 16,960,853 $ 665,771,857 $ 57,031 $ 5,636,982 $ 48,204 $ 5,949 $ 688,480,876 Depreciation — 1,535,409 47,871,174 6,080 533,628 2,298 — 49,948,589 Disposals — (57,812 ) (2,286,359 ) (17,963 ) (25,467 ) — — (2,387,601 ) Disposal of a subsidiary — — (180,843 ) — (5,264 ) (2,014 ) — (188,121 ) Transfers and reclassifications — 297 (3,164 ) — 2,867 — — — Exchange effect — 26,497 3,302,523 286 5,941 1,092 — 3,336,339 As of December 31, 2018 $ — $ 18,465,244 $ 714,475,188 $ 45,434 $ 6,148,687 $ 49,580 $ 5,949 $ 739,190,082 Net carrying amount: As of December 31, 2018 $ 1,314,402 $ 19,841,058 $ 139,213,317 $ 20,921 $ 1,908,214 $ 3,869 $ 10,544,814 $ 172,846,595 2019 a. Assets Used by the Company (Note): Cost: Land Buildings Machinery Transportation Furniture Leasehold Construction in Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 861,487 $ 35,681,733 $ 853,481,220 $ 66,355 $ 6,736,916 $ 53,449 $ 10,550,763 $ 907,431,923 Additions — — — — — — 14,579,988 14,579,988 Disposals — (4,637 ) (8,122,361 ) (3,563 ) (196,487 ) (6,180 ) (27,758 ) (8,360,986 ) Disposal of a subsidiary — — (161,781 ) — — — — (161,781 ) Acquisition of a subsidiary 871,700 3,087,585 6,704,236 9 54,978 8,372 739,663 11,466,543 Transfers and reclassifications — 211,285 20,723,346 3,557 285,891 11,712 (20,179,970 ) 1,055,821 Exchange effect (41,064 ) (538,378 ) (7,077,088 ) (449 ) (39,174 ) (1,470 ) (79,170 ) (7,776,793 ) As of December 31, 2019 $ 1,692,123 $ 38,437,588 $ 865,547,572 $ 65,909 $ 6,842,124 $ 65,883 $ 5,583,516 $ 918,234,715 Accumulated Depreciation and Impairment: Land Buildings Machinery Transportation Furniture Leasehold Construction Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 17,549,256 $ 714,286,307 $ 45,434 $ 5,112,684 $ 49,580 $ 5,949 $ 737,049,210 Depreciation — 1,542,864 44,307,925 6,105 488,216 2,441 — 46,347,551 Impairment loss — — 84,974 — — — — 84,974 Disposals — (4,624 ) (8,105,713 ) (3,563 ) (195,766 ) (5,371 ) (5,949 ) (8,320,986 ) Disposal of a subsidiary — — (127,455 ) — — — — (127,455 ) Transfers and reclassifications — — 66,682 — (325 ) 514 — 66,871 Exchange effect — (136,976 ) (4,789,755 ) (182 ) (21,375 ) (1,017 ) — (4,949,305 ) As of December 31, 2019 $ — $ 18,950,520 $ 745,722,965 $ 47,794 $ 5,383,434 $ 46,147 $ — $ 770,150,860 Net carrying amount: As of December 31, 2019 $ 1,692,123 $ 19,487,068 $ 119,824,607 $ 18,115 $ 1,458,690 $ 19,736 $ 5,583,516 $ 148,083,855 b. Assets Subject to Operating Leases (Note): Cost: Land Buildings Machinery Furniture Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 452,915 $ 2,624,569 $ 207,285 $ 1,319,985 $ 4,604,754 Disposals — (623 ) — (317 ) (940 ) Acquisition of a subsidiary 7,051 24,024 — — 31,075 Transfers and reclassifications — — (81,872 ) 3,213 (78,659 ) Exchange effect (331 ) (10,699 ) — (7,701 ) (18,731 ) As of December 31, 2019 $ 459,635 $ 2,637,271 $ 125,413 $ 1,315,180 $ 4,537,499 Accumulated Depreciation and Impairment: Land Buildings Machinery Furniture Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 915,988 $ 188,881 $ 1,036,003 $ 2,140,872 Depreciation — 106,250 3,827 70,708 180,785 Disposals — (334 ) — (317 ) (651 ) Transfers and reclassifications — — (67,295 ) 10 (67,285 ) Exchange effect — (2,868 ) — (3,595 ) (6,463 ) As of December 31, 2019 $ — $ 1,019,036 $ 125,413 $ 1,102,809 $ 2,247,258 Net carrying amount: As of December 31, 2019 $ 459,635 $ 1,618,235 $ — $ 212,371 $ 2,290,241 |
Intangible Assets | (9) Intangible Assets 2018 Cost Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 15,188 $ 1,080,726 $ 4,687,751 $ 3,565,705 $ 9,349,370 Additions — — 214,278 612,253 826,531 Write-off — (422,591 ) (179,418 ) (987,841 ) (1,589,850 ) Disposal of a subsidiary (176 ) — — — (176 ) Reclassifications — 474,127 — — 474,127 Exchange effect — (6,458 ) (210,982 ) (1 ) (217,441 ) As of December 31, 2018 $ 15,012 $ 1,125,804 $ 4,511,629 $ 3,190,116 $ 8,842,561 Accumulated Amortization and Impairment Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ — $ 670,014 $ 2,585,190 $ 2,306,657 $ 5,561,861 Amortization — 357,624 468,296 1,086,882 1,912,802 Write-off — (422,591 ) (179,418 ) (987,841 ) (1,589,850 ) Exchange effect — (3,398 ) (30,657 ) (1 ) (34,056 ) As of December 31, 2018 $ — $ 601,649 $ 2,843,411 $ 2,405,697 $ 5,850,757 Net carrying amount: As of December 31, 2018 $ 15,012 $ 524,155 $ 1,668,218 $ 784,419 $ 2,991,804 2019 Cost: Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 15,012 $ 1,125,804 $ 4,511,629 $ 3,190,116 $ 8,842,561 Additions — 1,666,599 806,915 851,679 3,325,193 Write-off — (383,745 ) (953,128 ) (638,815 ) (1,975,688 ) Disposal of a subsidiary — — — (93 ) (93 ) Acquisition of a subsidiary — 964,903 198,181 155,670 1,318,754 Reclassifications — 53,661 — — 53,661 Exchange effect — (80,074 ) (380,092 ) (10,551 ) (470,717 ) As of December 31, 2019 $ 15,012 $ 3,347,148 $ 4,183,505 $ 3,548,006 $ 11,093,671 Accumulated Amortization and Impairment Goodwill Software Patents and Others Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ — $ 601,649 $ 2,843,411 $ 2,405,697 $ 5,850,757 Amortization — 760,010 531,790 874,810 2,166,610 Impairment loss 7,398 — — — 7,398 Write-off — (383,745 ) (953,128 ) (638,815 ) (1,975,688 ) Disposal of a subsidiary — — — (93 ) (93 ) Reclassifications — 414 — — 414 Exchange effect — (27,152 ) (122,850 ) (3,972 ) (153,974 ) As of December 31, 2019 $ 7,398 $ 951,176 $ 2,299,223 $ 2,637,627 $ 5,895,424 Net carrying amount: As of December 31, 2019 $ 7,614 $ 2,395,972 $ 1,884,282 $ 910,379 $ 5,198,247 |
Disclosure Of Detailed Information About Lease Right Of Use Assets Explanatory | (a) Right-of-use As of December NT$ (In Thousands) Land (including land use right) $ 5,700,136 Buildings 473,558 Machinery and equipment 2,092,924 Transportation equipment 12,019 Other equipment 12,880 Net $ 8,291,517 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. For the year ended NT$ Depreciation (In Thousands) Land (including land use right) $ 366,827 Buildings 87,572 Machinery and equipment 180,115 Transportation equipment 6,001 Other equipment 4,030 Total $ 644,545 i. For the year ended December 31, 2019, the Company’s addition to right-of-use ii. Please refer to Note 8 for right-of-use (b) Lease Liabilities As of December NT$ (In Thousands) Current $ 569,957 Noncurrent 5,461,068 Total $ 6,031,025 Note: The Company adopted IFRS 16 on January 1, 2019. The Company elected not to restate prior periods in accordance with the transition provision in IFRS 16. |
Amortization Amounts of Intangible Assets | The amortization amounts of intangible assets are as follows: For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Operating costs $ 758,050 $ 827,596 Operating expenses $ 1,154,752 $ 1,339,014 |
Details of Loans | (10) Short-Term Loans As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Unsecured bank loans $ 7,780,552 $ 8,080,200 Unsecured other loans 5,323,256 3,935,006 Total $ 13,103,808 $ 12,015,206 For the years ended 2017 2018 2019 Interest rates applied 0.00%~4.35% 0.00%~4.55% 0.00%~4.55% |
Bonds Payable | (11) Bonds Payable As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Unsecured domestic bonds payable $ 23,700,000 $ 21,200,000 Unsecured convertible bonds payable 18,196,332 17,729,293 Less: Discounts on bonds payable (518,150 ) (147,877 ) Total 41,378,182 38,781,416 Less: Current portion (2,499,235 ) (20,093,825 ) Net $ 38,878,947 $ 18,687,591 |
Summary of Terms and Conditions of Bonds | a. UMC issued domestic unsecured corporate bonds. The terms and conditions of the bonds were as follows: Term Issuance date Issued amount Coupon rate Repayment Seven-year In early June 2012 NT$2,500 million 1.63% Interest was paid annually and the principal was fully repaid in June 2019. Five-year In mid-March NT$7,500 million 1.35% Interest was paid annually and the principal was fully repaid in March 2018. Seven-year In mid-March NT$2,500 million 1.50% Interest will be paid annually and the principal will be repayable in March 2020 upon maturity. Seven-year In mid-June NT$2,000 million 1.70% Interest will be paid annually and the principal will be repayable in June 2021 upon maturity. Ten-year In mid-June NT$3,000 million 1.95% Interest will be paid annually and the principal will be repayable in June 2024 upon maturity. Five-year In late March 2017 NT$6,200 million 1.15% Interest will be paid annually and the principal will be repayable in March 2022 upon maturity. Seven-year In late March 2017 NT$2,100 million 1.43% Interest will be paid annually and the principal will be repayable in March 2024 upon maturity. Five-year In early October 2017 NT$2,000 million 0.94% Interest will be paid annually and the principal will be repayable in October 2022 upon maturity. Seven-year In early October 2017 NT$3,400 million 1.13% Interest will be paid annually and the principal will be repayable in October 2024 upon maturity. |
Defined Benefit Plan Recognized on the Consolidated Balance Sheets | iii. The defined benefit plan recognized on the consolidated balance sheets are as follows: As of December 31, 2018 2019 NT$ NT$ Present value of the defined benefit obligation $ (5,620,509 ) $ (5,411,069 ) Fair value of plan assets 1,453,335 1,385,696 Funded status (4,167,174 ) (4,025,373 ) Net defined benefit liabilities, noncurrent recognized on the consolidated balance sheets $ (4,167,174 ) $ (4,025,373 ) |
Major Categories of Plan Assets as a Percentage of Fair Value of the Total Plan Assets | iv. The major categories of plan assets as a percentage of the fair value of the total plan assets are as follows: As of December 31, 2018 2019 Cash 17 % 21 % Equity instruments 51 % 45 % Debt instruments 24 % 24 % Others 8 % 10 % |
Principal Underlying Actuarial Assumptions | v. The principal underlying actuarial assumptions are as follows: As of December 31, 2018 2019 Discount rate 0.91 % 0.67 % Rate of future salary increase 3.50 % 3.50 % |
Expected Future Benefit Payments | vi. Expected future benefit payments are as follows: Year As of December 31, 2019 NT$ (In Thousands) 2020 $ 230,468 2021 252,969 2022 298,483 2023 328,958 2024 377,022 2025 and thereafter 4,263,427 Total $ 5,751,327 |
Sensitivity Analysis | vii. Sensitivity analysis: As of December 31, 2018 Discount rate Rate of future salary increase 0.5% increase 0.5% decrease 0.5% increase 0.5% decrease NT$ NT$ NT$ NT$ Decrease (increase) in defined benefit obligation $ 262,909 $ (281,037 ) $ (244,120 ) $ 231,751 As of December 31, 2019 Discount rate Rate of future salary increase 0.5% increase 0.5% decrease 0.5% increase 0.5% decrease NT$ NT$ NT$ NT$ Decrease (increase) in defined benefit obligation $ 235,666 $ (251,131 ) $ (215,694 ) $ 205,388 |
Deferred Government Grants | (14) Deferred Government Grants As of December 31, 2018 2019 NT$ NT$ Beginning balance $ 14,595,546 $ 17,480,904 Arising during the period 7,129,770 617,685 Recorded in profit or loss: Other operating income (3,885,722 ) (4,062,148 ) Exchange effect (358,690 ) (484,888 ) Ending balance $ 17,480,904 $ 13,551,553 Current $ 3,832,124 $ 3,780,579 Noncurrent 13,648,780 9,770,974 Total $ 17,480,904 $ 13,551,553 |
Summary of Refund Liabilities | (15) Refund Liabilities (classified under other current liabilities) As of December 31, 2018 2019 NT$ NT$ Refund liabilities $ 1,213,476 $ 2,078,075 |
Purpose for Repurchase and Changes in Treasury Stock | i. UMC carried out a treasury stock program and repurchased its shares from the centralized securities exchange market. The purpose for the repurchase and changes in treasury stock during the years ended December 31, 2018 and 2019 were as follows: For the year ended December 31, 2018 (In thousands of shares) Purpose As of Increase Decrease As of For transfer to employees 400,000 — 200,000 200,000 To maintain UMC’s credit and its stockholders’ rights and interests — 480,000 200,000 280,000 400,000 480,000 400,000 480,000 For the year ended December 31, 2019 (In thousands of shares) Purpose As of Increase Decrease As of For transfer to employees 200,000 — 200,000 — To maintain UMC’s credit and its stockholders’ rights and interests 280,000 220,000 500,000 — 480,000 220,000 700,000 — |
Details of Distribution | Appropriation of earnings Cash dividend per share 2018 2019 2018 2019 Legal reserve $ 707,299 $ 9 6 3, 947 Special reserve 14,513,940 (3,491,626 ) Cash dividends 6,916,105 9,765,155 $ 0.58 $ 0.75 |
Non-controlling Interests | d. Non-controlling For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Beginning balance $ 2,161,729 $ 956,808 $ 466,768 Impact of retroactive applications of IFRS 15 — 1,597 — Adjusted balance as of January 1 2,161,729 958,405 466,768 Attributable to non-controlling Net loss (2,997,469 ) (4,429,938 ) (3,578,847 ) Other comprehensive income (loss) (111,601 ) (103,894 ) (15,213 ) Changes in subsidiaries’ ownership (999,151 ) (278,613 ) 24,740 Disposal of a subsidiary — (7,074 ) — Derecognition of the non-controlling 2,903,300 4,327,882 3,512,617 Ending balance $ 956,808 $ 466,768 $ 410,065 |
Operating Revenues | a. Disaggregation of revenue 2017 i. Operating Revenues For the year ended NT$ (In Thousands) Net sales Sale of goods $ 142,957,544 Other operating revenues Royalty 6,817 Mask tooling 3,334,844 Others 2,985,501 Operating revenues $ 149,284,706 |
Summary of Disaggregation of Revenue by Geography | ii. By geography For the year ended NT$ (In Thousands) Taiwan $ 48,952,219 Singapore 30,798,270 China (includes Hong Kong) 18,971,866 Japan 4,694,277 USA 18,208,227 Europe 14,329,730 Others 13,330,117 Total $ 149,284,706 |
Summary of Disaggregation of Revenue by Product | 2018 and 2019 i. By product For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Wafer $ 142,550,304 $ 142,625,019 Others 8,702,267 5,576,622 Total $ 151,252,571 $ 148,201,641 |
Summary of Disaggregation of Revenue by Operating Segments | ii. By operating segments For the year ended December 31, 2018 Wafer New Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Revenue from contracts with customers $ 151,023,932 $ 247,929 $ 151,271,861 $ (19,290 ) $ 151,252,571 The timing of revenue recognition: At a point in time $ 146,247,350 $ 247,929 $ 146,495,279 $ (19,290 ) $ 146,475,989 Over time 4,776,582 — 4,776,582 — 4,776,582 Total $ 151,023,932 $ 247,929 $ 151,271,861 $ (19,290 ) $ 151,252,571 For the year ended December 31, 2019 Wafer New Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Revenue from contracts with customers $ 148,123,306 $ 78,335 $ 148,201,641 $ — $ 148,201,641 The timing of revenue recognition: At a point in time $ 146,978,700 $ 78,335 $ 147,057,035 $ — $ 147,057,035 Over time 1,144,606 — 1,144,606 — 1,144,606 Total $ 148,123,306 $ 78,335 $ 148,201,641 $ — $ 148,201,641 |
Summary of Balances of Contract Assets and Contract Liabilities | b. Contract balances i. Contract assets, current As of January 1, As of December 31, 2018 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Sales of goods and services $ 129,042 $ 486,184 $ 599,491 Less: Loss allowance — (393,974 ) (385,248 ) Net $ 129,042 $ 92,210 $ 214,243 ii. Contract liabilities As of January 1, As of December 31, 2018 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Sales of goods and services $ 3,951,414 $ 932,371 $ 1,470,195 Current $ 3,951,414 $ 932,371 $ 988,115 Noncurrent — — 482,080 Total $ 3,951,414 $ 932,371 $ 1,470,195 |
Employee Benefit, Depreciation and Amortization Expenses | The Company’s employee benefit, depreciation and amortization expenses are summarized as follows: For the years ended December 31, 2017 2018 2019 Operating Operating Total Operating Operating Total Operating Operating Total NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Employee benefit expenses Salaries $ 16,676,560 $ 7,045,487 $ 23,722,047 $ 17,694,175 $ 7,780,063 $ 25,474,238 $ 17,109,432 $ 7,712,792 $ 24,822,224 Labor and health insurance 878,576 376,523 1,255,099 882,671 376,556 1,259,227 911,037 395,571 1,306,608 Pension 1,008,121 327,454 1,335,575 1,065,176 342,565 1,407,741 1,066,877 361,281 1,428,158 Other employee benefit expenses 259,701 118,422 378,123 289,395 111,734 401,129 303,358 124,631 427,989 Depreciation 47,820,812 3,003,855 50,824,667 47,086,993 2,689,314 49,776,307 45,068,673 1,841,954 46,910,627 Amortization 911,563 1,222,163 2,133,726 880,967 1,219,163 2,100,130 848,214 1,368,440 2,216,654 |
Details of Distribution of Employees' Compensation and Directors' Compensation | The details of distribution are as follows: 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Employees’ compensation – Cash $ 1,032,324 $ 1,400,835 $ 1,132,952 Directors’ compensation 11,452 7,624 10,259 |
Net Other Operating Income and Expenses | (20) Net Other Operating Income and Expenses For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Rental income from property $ 160,119 $ 199,505 $ 200,351 Gain on disposal of property, plant and equipment 82,397 136,743 43,036 Government grants 1,710,176 5,220,746 5,366,907 Impairment loss Property, plant and equipment — — (84,974 ) Goodwill — — (7,398 ) Others (298,997 ) (440,110 ) (335,760 ) Total $ 1,653,695 $ 5,116,884 $ 5,182,162 |
Non-Operating Income and Expenses | (21) Non-Operating Income and Expenses a. Other gains and losses For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Gain (loss) on valuation of financial assets and liabilities at fair value through profit or loss $ 598,270 $ (1,167,735 ) $ 1,279,931 Impairment loss Investments accounted for under the equity method — (46,225 ) (25,762 ) Available-for-sale (664,948 ) — — Financial assets measured at cost, noncurrent (285,387 ) — — Gain (loss) on disposal of investments 1,269,369 (19,286 ) (16,293 ) Others 76,788 104,956 (71,147 ) Total $ 994,092 $ (1,128,290 ) $ 1, 166 729 b. Finance costs For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Interest expenses Bonds payable $ 763,124 $ 710,663 $ 672,902 Bank loans 1,563,590 1,782,544 1,808,633 Lease liabilities (Note) — — 178,112 Others 80,158 275,465 274,168 Financial expenses 88,290 82,553 63,828 Total $ 2,495,162 $ 2,851,225 $ 2,997,643 |
Components of Other Comprehensive Income (Loss) | (22) Components of Other Comprehensive Income (Loss) For the year ended December 31, 2017 Arising during Reclassification Other Income tax Other NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Items that will not be reclassified subsequently to profit or loss: Remeasurements of defined benefit pension plans $ (184,186 ) $ — $ (184,186 ) $ 31,311 $ (152,875 ) Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss 1,221 — 1,221 — 1,221 Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations (5,975,203 ) — (5,975,203 ) 59,838 (5,915,365 ) Unrealized gains or losses on available-for-sale 1,224,344 (642,905 ) 581,439 100,059 681,498 Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss 604,675 102,302 706,977 (135,989 ) 570,988 Total other comprehensive income (loss) $ (4,329,149 ) $ (540,603 ) $ (4,869,752 ) $ 55,219 $ (4,814,533 ) For the year ended December 31, 2018 Arising during Reclassification Other Income tax Other NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Items that will not be reclassified subsequently to profit or loss: Remeasurements of defined benefit pension plans $ (55,060 ) $ — $ (55,060 ) $ 32,647 $ (22,413 ) Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income 1,454,018 — 1,454,018 (419,198 ) 1,034,820 Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss (2,572 ) — (2,572 ) 514 (2,058 ) Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss (103,319 ) — (103,319 ) 27,741 (75,578 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations (47,417 ) 408 (47,009 ) (28,845 ) (75,854 ) Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss (11,069 ) (12,897 ) (23,966 ) 659 (23,307 ) Total other comprehensive income (loss) $ 1,234,581 $ (12,489 ) $ 1,222,092 $ (386,482 ) $ 835,610 For the year ended December 31, 2019 Arising during Reclassification Other Income tax Other NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Items that will not be reclassified subsequently to profit or loss: Remeasurements of defined benefit pension plans $ 106,403 $ — $ 106,403 $ (21,281 ) $ 85,122 Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income 5,486,209 — 5,486,209 (394,695 ) 5,091,514 Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss 899,025 — 899,025 (41,643 ) 857,382 Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations (3,292,023 ) 14,085 (3,277,938 ) 14,949 (3,262,989 ) Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss 8,799 6,594 15,393 (8,843 ) 6,550 Total other comprehensive income (loss) $ 3,208,413 $ 20,679 $ 3,229,092 $ (451,513 ) $ 2,777,579 |
Major Components of Income Tax Expense | a. The major components of income tax expense for the years ended December 31, 2017, 2018 and 2019 were as follows: i. Income tax expense (benefit) recorded in profit or loss For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Current income tax expense (benefit): Current income tax charge $ 2,467,004 $ (264,909 ) $ 772,795 Adjustments in respect of current income tax of prior periods (364,951 ) (899,219 ) (1,033,780 ) Deferred income tax expense (benefit): Deferred income tax related to origination and reversal of temporary differences (1,033,142 ) 1,350,028 465,530 Deferred income tax related to recognition and derecognition of tax losses and unused tax credits (424,608 ) (335,367 ) 231,971 Deferred income tax related to changes in tax rates 12,477 (842,123 ) — Adjustment of prior year’s deferred income tax 9,233 (2,744 ) 121,189 Deferred income tax arising from write-down or reversal of write-down of deferred tax assets 326,468 (135,543 ) (327,359 ) Income tax expense (benefit) recorded in profit or loss $ 992,481 $ (1,129,877 ) $ 230,346 ii. Income tax related to components of other comprehensive income (loss) (i) Items that will not be reclassified subsequently to profit or loss: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Remeasurements of defined benefit pension plans $ 31,311 $ 11,012 $ (21,281 ) Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income — (24,969 ) (394,695 ) Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss — 514 — Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss — 18,045 (41,643 ) Deferred income tax related to changes in tax rates — (362,898 ) — Income tax related to items that will not be reclassified subsequently to profit or loss $ 31,311 $ (358,296 ) $ (457,619 ) (ii) Items that may be reclassified subsequently to profit or loss: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Exchange differences on translation of foreign operations $ 59,838 $ (24,339 ) $ 14,949 Unrealized gains or losses on available-for-sale 100,059 — — Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss (135,989 ) 1,847 (8,843 ) Deferred income tax related to changes in tax rates — (5,694 ) — Income tax related to items that may be reclassified subsequently to profit or loss $ 23,908 $ (28,186 ) $ 6,106 iii. Deferred income tax charged directly to equity For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Adjustments of changes in net assets of associates and joint ventures accounted for using equity method $ 227 $ (414 ) $ (532 ) Reversal of temporary difference arising from initial recognition of the equity component of the compound financial instrument — — (45 ) Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss — — (514 ) Deferred income tax related to changes in tax rates — (57,140 ) — Income tax recognized directly to equity $ 227 $ (57,554 ) $ (1,091 ) |
Reconciliation Between Income Tax Expense and Income Before Tax at UMC's Applicable Tax Rate | b. A reconciliation between income tax expense and income before tax at UMC’s applicable tax rate was as follows: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Income before tax $ 7,671,710 $ 2,117,920 $ 4,80 6 596 At UMC’s statutory income tax rate 1,304,191 423,584 96 1 319 Adjustments in respect of current income tax of prior periods (364,951 ) (899,219 ) (1,033,780 ) Net changes in loss carry-forward and investment tax credits 564,742 2,239,058 2,387,922 Adjustment of deferred tax assets/liabilities for write-downs/reversals and different jurisdictional tax rates 330,228 49,625 (169,568 ) Tax effect of non-taxable non-deductible Tax exempt income (1,549,018 ) (451,589 ) (1,778,820 ) Investment gain (639,979 ) (886,546 ) (270,610 ) Dividend income (83,154 ) (112,810 ) (139,093 ) Others 259,590 140,278 110,991 Basic tax 33,207 — 3,215 Estimated income tax on unappropriated earnings 38,069 (849,328 ) 150,401 Deferred income tax related to changes in tax rates 12,477 (842,123 ) — Effect of different tax rates applicable to UMC and its subsidiaries (21,615 ) (118,404 ) (102,608 ) Taxes withheld in other jurisdictions 868,106 48,291 19,749 Others 240,588 129,306 91,228 Income tax expense (benefit) recorded in profit or loss $ 992,481 $ (1,129,877 ) $ 23 0 346 |
Significant Components of Deferred Income Tax Assets and Liabilities | c. Significant components of deferred income tax assets and liabilities were as follows: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Deferred income tax assets Depreciation $ 1,930,388 $ 1,658,688 Loss carry-forward 502,331 1,310,300 Pension 825,792 800,734 Refund liabilities 232,854 339,185 Allowance for inventory valuation losses 416,270 628,725 Investment loss 748,983 486,537 Unrealized profit on intercompany sales 1,703,942 1,568,645 Investment tax credits 336,869 — Others 98,367 7 70 543 Total deferred income tax assets 6,795,796 7,56 3 357 Deferred income tax liabilities Unrealized exchange gain (535,595 ) (565,175 ) Depreciation (440,524 ) (550,772 ) Investment gain (513,322 ) (702,547 ) Convertible bond option (139,693 ) (69,484 ) Amortizable assets (342,607 ) (321,459 ) Others (7,768 ) (11,793 ) Total deferred income tax liabilities (1,979,509 ) (2,221,230 ) Net deferred income tax assets $ 4,816,287 $ 5,3 42 127 |
Movement of Deferred Tax | d. Movement of deferred tax For the years ended December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Balance as of January 1 $ 3,788,906 $ 4,816,287 Impact of retroactive applications of IFRS 15, IFRS 9 and IFRS 16 1,515,238 93 Adjusted balance as of January 1 5,304,144 4,816,380 Acquisition from business combinations — 1,542,895 Amounts recognized in profit or loss during the period (34,251 ) (49 1 331 ) Amounts recognized in other comprehensive income (386,482 ) (451,513 ) Amounts recognized in equity (57,554 ) (1,091 ) Exchange adjustments (9,570 ) (73,213 ) Balance as of December 31 $ 4,816,287 $ 5,3 42 127 |
Earnings Per Share | (24) Earnings Per Share a. Earnings per share-basic For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Net income attributable to the parent company $ 9,676,698 $ 7,677,735 $ 8,1 55 097 Weighted-average number of ordinary shares for basic earnings per share (thousand shares) 11,994,760 11,889,723 11,565,068 Earnings per share-basic (NTD) $ 0.81 $ 0.65 $ 0.71 b. Earnings per share-diluted For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Net income attributable to the parent company $ 9,676,698 $ 7,677,735 $ 8, 155 097 Effect of dilution Unsecured convertible bonds 288,091 283,349 289,121 Income attributable to stockholders of the parent $ 9,964,789 $ 7,961,084 $ 8,4 44 218 Weighted-average number of common stocks for basic earnings per share (thousand shares) 11,994,760 11,889,723 11,565,068 Effect of dilution Employees’ compensation 83,981 137,511 90,047 Unsecured convertible bonds 1,193,935 1,243,599 1,295,729 Weighted-average number of common stocks after dilution (thousand shares) 13,272,676 13,270,833 12,950,844 Earnings per share-diluted (NTD) $ 0.75 $ 0.60 $ 0.65 |
Reconciliation of Liabilities Arising from Financing Activities | (25) Reconciliation of Liabilities Arising from Financing Activities For the year ended December 31, 2018 As of December 31, Cash Flows Non-cash As of December 31, Items Foreign Others (Note A) NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Short-term loans $ 25,445,540 $ (12,288,248 ) $ (292,466 ) $ 238,982 $ 13,103,808 Long-term loans (current portion included) 32,165,336 (1,880,197 ) 556,777 (15,701 ) 30,826,215 Bonds payable (current portion included) 48,517,631 (7,500,000 ) — 360,551 41,378,182 Guarantee deposits (current portion included) 564,576 88,131 13,086 — 665,793 Other financial liabilities-noncurrent (Note B) 20,486,119 — (456,551 ) 380,787 20,410,355 For the year ended December 31, 2019 Non-cash Items As of December 31, Cash Flows Foreign Others (Note A) As of December 31, NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Short-term loans $ 13,103,808 $ (993,723 ) $ (368,507 ) $ 273,628 $ 12,015,206 Long-term loans (current portion included) 30,826,215 3,876,991 (802,975 ) 1,843 33,902,074 Bonds payable (current portion included) 41,378,182 (2,500,000 ) — (96,766 ) 38,781,416 Guarantee deposits (current portion included) 665,793 252,269 (2,021 ) (619,347 ) 296,694 Lease liabilities 6,006,457 (633,488 ) (78,432 ) 736,488 (Note C ) 6,031,025 Other financial liabilities-noncurrent (Note B) 20,410,355 — (698,127 ) 381,213 20,093,441 Note A: Other non-cash Note B: Please refer to Note 9(5) for more details on other financial liabilities-noncurrent. Note C: Including the impact from acquisition of a subsidiary. |
Summary of detailed information about business combination | NT$ (In Thousands) Consideration Transferred: Cash $ 15,711,370 Fair value of previously held equity interest immediately before acquisition 2,303,988 Gains or losses on hedging instruments 2,572 Total $ 18,017,930 Cash flows analysis of acquisition: Cash Consideration $ 15,711,370 Net cash acquired from the subsidiary (2,910,389 ) Net cash outflows from acquisition $ 12,800,981 The fair value of the identifiable assets and liabilities of USJC as of the date of acquisition were: Fair value recognized NT$ (In Thousands) Assets Cash and cash equivalents $ 2,910,389 Accounts receivable 3,561,827 Inventories 2,428,616 Property, plant and equipment 11,497,618 Right-of-use 479,547 Intangible assets 1,318,754 Deferred tax assets 1,563,553 Others 230,431 23,990,735 Liabilities Accounts payable (3,170,323 ) Other payables and payables on equipment (1,962,119 ) Lease liabilities (479,547 ) Others (189,231 ) (5,801,220 ) Total identifiable net assets $ 18,189,515 Gain on bargain purchase: Consideration transferred $ 18,017,930 Less: Fair value of identifiable net assets (18,189,515 ) Bargain purchase gain $ (171,585 ) |
Summary of Derecognized Assets and Liabilities | a. Derecognized assets and liabilities mainly consisted of: NT$ (In Thousands) Assets Cash and cash equivalents $ 14,430 Notes and accounts receivable 18,239 Inventories 46,717 Property, plant and equipment 45,515 Others 2,365 127,266 Liabilities Short-term loans (34,313 ) Payables (29,309 ) Current portion of long-term liabilities (11,899 ) Long-term loans (5,502 ) Others (2,872 ) (83,895 ) Net assets of the subsidiary deconsolidated $ 43,371 |
Summary of Consideration Received and Loss Recognized | b. Consideration received and loss recognized from the transaction: NT$ (In Thousands) Cash received $ 4,617 Less: Net assets of the subsidiary deconsolidated (43,371 ) Add: Non-controlling 7,074 Less: Goodwill (176 ) Loss on disposal of subsidiary $ (31,856 ) |
Summary of Net Cash Outflow Arising from Deconsolidation of the Subsidiary | c. Analysis of net cash outflow arising from deconsolidation of the subsidiary: NT$ (In Thousands) Cash received $ 4,617 Net cash of subsidiary derecognized (14,430 ) Net cash outflow from deconsolidation $ (9,813 ) |
Unused tax credits [member] | |
Statement [Line Items] | |
Unused Tax Credits and Losses | g. The information of the unused tax loss carry-forward for which no deferred income tax assets have been recognized was as follows: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Expiry period 1-5 $ 27,072,604 $ 38,708,327 6-10 10,799,310 9,588,002 more than 10 years 5,043 — Total $ 37,876,957 $ 48,296,329 |
Aggregated individually immaterial associates [member] | |
Statement [Line Items] | |
Aggregate Amount of the Company's Share of its Individually Immaterial Associates | i. The aggregate amount of the Company’s share of all its individually immaterial associates that are accounted for using the equity method was as follows: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Profit (loss) from continuing operations $ 77,589 $ (616,665 ) $ 115,329 Post-tax 80,248 — — Other comprehensive income (loss) 526,773 (82,871 ) 873,308 Total comprehensive income (loss) $ 684,610 $ (699,536 ) $ 988,637 |
More than 1 year [member] | |
Statement [Line Items] | |
Details of Loans | a. Details of long-term loans as of December 31, 2018 and 2019 are as follows: As of December 31, Lenders 2018 2019 Redemption NT$ (In Thousands) NT$ (In Thousands) Secured Long-Term Loan from Mega International Commercial Bank (1) $ 6,013 $ 3,827 Effective July 3, 2017 to July 5, 2021. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Mega International Commercial Bank (2) — 10,380 Effective October 24, 2019 to October 24, 2024. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (1) 3,006 1,288 Effective August 10, 2015 to August 10, 2020. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (2) 83,243 71,351 Effective October 19, 2015 to October 19, 2025. Interest-only payment for the first year. Principal is repaid in 37 quarterly payments with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (3) — 29,896 Repayable monthly from May 31, 2019 to May 31, 2023 with monthly interest payments. Secured Syndicated Loans from China Development Bank and 6 others 28,987,895 26,892,457 Effective October 20, 2016 to October 20, 2024. Interest-only payment for the first and the second year. Principal is repaid in 13 semi-annual payments with semi-annual interest payments. Unsecured Syndicated Loans from Bank of Taiwan and 7 others 747,900 — Repayable semi-annually from February 6, 2017 to February 6, 2020 with monthly interest payments. Unsecured Long-Term Loan from Bank of Taiwan 1,000,000 — Repayable quarterly from March 23, 2019 to December 23, 2021 with monthly interest payments. Unsecured Long-Term Loan from CTBC Bank — 747,900 Effective January 10, 2019 to September 30, 2021. Interest-only payment for the first and nine months. Principal is repaid in full at the end of the term with monthly interest payments. Unsecured Long-Term Loan from ICBC Bank — 1,744,975 Repayable semi-annually from March 10, 2020 to September 9, 2021 with quarterly interest payments. Unsecured Revolving Loan from Mega International Commercial Bank (Note A) — 2,000,000 Repayable semi-annually from October 16, 2020 to April 16, 2022 with monthly interest payments. Unsecured Revolving Loan from Chang Hwa Commercial Bank (Note B) — 2,400,000 Repayable quarterly from January 26, 2021 to October 26, 2022 with monthly interest payments. Subtotal 30,828,057 33,902,074 Less: Administrative expenses from syndicated loans (1,842 ) — Less: Current portion (2,622,161 ) (4,701,775 ) Total $ 28,204,054 $ 29,200,299 For the years ended December 31, 2017 2018 2019 Interest rates applied 0.99%~4.66% 0.99%~5.56% 0.55%~5.56% |
Plan assets [member] | |
Statement [Line Items] | |
Defined Benefit Plan Recognized on the Consolidated Balance Sheets | ii. Movements in fair value of plan assets during the year: For the years ended December 31, 2018 2019 NT$ (In Thousands) NT$ Beginning balance of fair value of plan assets $ 1,532,539 $ 1,453,335 Items recognized as profit or loss: Interest income on plan assets 16,552 13,225 Contribution by employer 95,577 94,362 Benefits paid (233,530 ) (216,510 ) Remeasurements recognized in other comprehensive income (loss): Return on plan assets, excluding amounts included in interest income 42,197 41,284 Fair value of plan assets at end of year $ 1,453,335 $ 1,385,696 |
Present value of defined benefit obligation [member] | |
Statement [Line Items] | |
Defined Benefit Plan Recognized on the Consolidated Balance Sheets | i. Movements in present value of defined benefit obligation during the year: For the years ended December 31, 2018 2019 NT$ (In Thousands) NT$ (In Thousands) Defined benefit obligation at beginning of year $ (5,671,058 ) $ (5,620,509 ) Items recognized as profit or loss: Service cost (24,477 ) (21,043 ) Interest cost (61,247 ) (51,146 ) Subtotal (85,724 ) (72,189 ) Remeasurements recognized in other comprehensive income (loss): Arising from changes in financial assumptions (91,350 ) (114,976 ) Experience adjustments (5,907 ) 180,095 Subtotal (97,257 ) 65,119 Benefits paid 233,530 216,510 Defined benefit obligation at end of year $ (5,620,509 ) $ (5,411,069 ) |
Financial assets at fair value through profit or loss [member] | |
Statement [Line Items] | |
Financial Assets | (2) Financial Assets at Fair Value through Profit or Loss As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial assets mandatorily measured at fair value through profit or loss Common stocks $ 6,814,915 $ 8,381,085 Preferred stocks 2,998,228 3,299,419 Funds 2,030,688 2,195,524 Convertible Bonds 236,905 145,445 Forward contracts 3,561 — Option — — Total $ 12,084,297 $ 14,021,473 Current $ 528,450 $ 722,794 Noncurrent 11,555,847 13,298,679 Total $ 12,084,297 $ 14,021,473 |
Financial assets at fair value through other comprehensive income [member] | |
Statement [Line Items] | |
Financial Assets | (5) Financial Assets at Fair Value through Other Comprehensive Income, Non-Current As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Equity instruments Common stocks $ 11,401,451 $ 14,547,738 Preferred stocks 184,026 175,494 Total $ 11,585,477 $ 14,723,232 |
Trade receivables [member] | |
Statement [Line Items] | |
Financial Assets | (3) Accounts Receivable, Net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Accounts receivable $ 23,784,141 $ 26,136,293 Less: loss allowance (48,152 ) (6 21 410 ) Net $ 23,735,989 $ 25, 514 8 8 |
Significant Related Party Tra_2
Significant Related Party Transactions (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Statement [Line Items] | |
Key Management Personnel Compensation | c. Key management personnel compensation For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Short-term employee benefits $ 271,554 $ 387,294 $ 271,135 Post-employment benefits 3,478 4,660 2,406 Termination benefits 6,957 — 3,415 Share-based payment 68 293,857 62,203 Others 294 435 578 Total $ 282,351 $ 686,246 $ 339,737 |
Subsidiaries [member] | |
Statement [Line Items] | |
Significant Transactions Between the Company and Related Parties | a. Significant intercompany transactions between consolidated entities were as follows: For the year ended December 31, 2017 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 59,968,172 Net 60 days UMC UMC-USA Accounts receivable 6,737,723 — UMC UMC GROUP JAPAN Sales 4,212,523 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 659,488 — UMC USCXM Sales 998,899 (Note C ) Net 30 days UMC USCXM Accounts receivable 4,790,930 — UMC USCXM Loan receivable 3,924,360 — HJ UMC-USA Sales 214,147 Net 60 days HJ UMC-USA Accounts receivable 35,498 — HJ UMC GROUP JAPAN Sales 223,740 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 43,332 — USCXM UMC-USA Sales 241,220 Net 60 days USCXM UMC-USA Accounts receivable 141,272 — For the year ended December 31, 2018 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 57,107,585 Net 60 days UMC UMC-USA Accounts receivable 7,312,272 — UMC UMC GROUP JAPAN Sales 4,159,637 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 905,048 — UMC USCXM Sales 1,356,567 (Note C ) Net 30 days UMC USCXM Accounts receivable 48,163 — USCXM UMC-USA Sales 698,988 Net 60 days USCXM UMC-USA Accounts receivable 120,678 — HJ UMC-USA Sales 307,471 Net 60 days HJ UMC-USA Accounts receivable 35,161 — HJ UMC GROUP JAPAN Sales 272,218 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 61,971 — For the year ended December 31, 2019 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 47,736,335 Net 60 days UMC UMC-USA Accounts receivable 5,937,706 — UMC UMC GROUP JAPAN Sales 3,933,964 Net 60 days UMC UMC GROUP JAPAN Accounts receivable 608,622 — UMC USCXM Sales 1,209,310 (Note C ) Net 30 days UMC USCXM Accounts receivable 31,334 — UMC USCXM Loan receivable 1,201,200 — USCXM UMC-USA Sales 745,226 Net 60 days USCXM UMC-USA Accounts receivable 33,242 — HJ UMC-USA Sales 152,012 Net 60 days HJ UMC-USA Accounts receivable 21,138 — HJ UMC GROUP JAPAN Sales 250,736 Net 60 days HJ UMC GROUP JAPAN Accounts receivable 51,150 — Note A: The significant intercompany transactions listed above include downstream transactions. Note B: The sales price to the above related parties was determined through mutual agreement in reference to market conditions. Note C: UMC authorized technology licenses to its subsidiary, USCXM, in the amount of US$0.35 billion, which was recognized as deferred revenue to be realized over time. |
Other related parties [member] | |
Statement [Line Items] | |
Significant Transactions Between the Company and Related Parties | (ii) Operating revenues For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 1,357,720 $ 1,291,398 $ 1,532,339 Joint ventures 12,465 4,277 — Others 30,417 27,881 45,523 Total $ 1,400,602 $ 1,323,556 $ 1,577,862 (iii) Accounts receivable, net As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Associates $ 134,646 $ 278,702 Others 4,266 11,243 Total $ 138,912 $ 289,945 The sales price to the above related parties was determined through mutual agreement in reference to market conditions. The collection period for domestic sales to related parties was month-end (iv) Refund liabilities (classified under other current liabilities) As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Associates $ 1,287 $ 7,880 Others 71 48 Total $ 1,358 $ 7,928 (v) Significant asset transactions Acquisition of financial assets at fair value through profit or loss – noncurrent For the years ended December 31, 2017 and 2018: None. For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 500 Stock of MATERIALS $ 32,923 Associates 1,900 Stock of GEAR RADIO 37,211 Total $ 70,134 Acquisition of investments accounted for under the equity method For the year ended December 31, 2017: None. For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 84,000 Stock $ 840,000 For the year ended Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 72,000 Stock $ 720,000 Acquisition of intangible assets Purchase price For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 322,808 $ 200,610 $ 339,463 Disposal of subsidiary For the years ended December 31, 2017 and 2019: None. For the year ended Trading Volume Transaction underlying Proceeds Disposal NT$ NT$ (In Thousands) (In Thousands) Others 46,168 Stock of UNISTARS $ 4,617 $ (31,856 ) Disposal of financial assets For the year ended Trading Volume Transaction underlying Proceeds Disposal NT$ NT$ (In Thousands) (In Thousands) Others 6,489 Stock of ASIA PACIFIC $ 50,745 $ (13,753 ) For the years ended December 31, 2018 and 2019: None. (vi) Others Mask expenditure For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Others $ 994,710 $ 1,750,088 $ 2,346,263 Other payables of mask expenditure As of December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Others $ 580,789 $ 571,036 $ 683,892 |
Assets Pledged as Collateral (T
Assets Pledged as Collateral (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Summary of Assets Pledged as Collateral | As of December 31, 2018 2019 Party to which asset(s) was pledged Purpose of pledge NT$ NT$ (In Thousands) (In Thousands) Refundable Deposits (Bank deposit and Time deposit) $ 961,198 $ 811,035 Customs Customs duty guarantee Refundable Deposits (Time deposit) 237,358 348,117 Science Park Administration Collateral for land lease Refundable Deposits (Time deposit) 19,579 19,510 Science Park Administration Collateral for dormitory lease Refundable Deposits (Time deposit) 37,084 41,785 Liquefied Natural Gas Business Division, CPC Corporation, Taiwan Energy resources guarantee Refundable Deposits (Time deposit) 1,000,000 1,000,000 Bank of China Bank performance guarantee Buildings 5,823,938 5,381,590 Taiwan Cooperative Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Machinery and equipment 25,762,086 19,029,077 Taiwan Cooperative Bank, Mega International Commercial Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Right-of-use — 292,120 Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Other noncurrent assets 309,108 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term Total $ 34,150,351 $ 26,923,234 |
Financial Risk and Fair Value_2
Financial Risk and Fair Value Disclosures (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Statement [Line Items] | |
Categories of Financial Instruments | (1) Categories of financial instruments As of December 31, Financial Assets 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial assets at fair value through profit or loss $ 12,084,297 $ 14,021,473 Financial assets at fair value through other comprehensive income 11,585,477 14,723,232 Financial assets measured at amortized cost Cash and cash equivalents (excludes cash on hand) 83,655,648 95,486,403 Receivables 24,583,451 26, 459 392 Refundable deposits 2,757,399 2,600,733 Other financial assets 2,320,037 2,353,066 Total $ 136,986,309 $ 155, 644 299 As of December 31, Financial Liabilities 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Financial liabilities measured at amortized cost Short-term loans $ 13,103,808 $ 12,015,206 Payables 23,559,548 27, 433 065 Guarantee deposits (current portion included) 665,793 296,694 Bonds payable (current portion included) 41,378,182 38,781,416 Long-term loans (current portion included) 30,826,215 33,902,074 Lease liabilities (Note) — 6,031,025 Other financial liabilities 20,523,099 20,093,441 Total $ 130,056,645 $ 138, 552 921 |
Maturity Profile of Financial Liabilities Based on Contractual Undiscounted Payments and Contractual Maturity | The table below summarizes the maturity profile of the Company’s financial liabilities based on the contractual undiscounted payments and contractual maturity: As of December 31, 2018 Less than 2 to 3 4 to 5 > 5 years Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Non-derivative Short-term loans $ 13,171,811 $ — $ — $ — $ 13,171,811 Payables 23,088,071 199,788 — — 23,287,859 Guarantee deposits 52,890 154,787 15,385 442,731 665,793 Bonds payable 3,000,855 23,187,913 8,484,393 8,563,021 43,236,182 Long-term loans 4,036,260 10,997,829 17,209,849 4,765,719 37,009,657 Other financial liabilities 112,744 — 17,477,984 4,369,730 21,960,458 Total $ 43,462,631 $ 34,540,317 $ 43,187,611 $ 18,141,201 $ 139,331,760 As of December 31, 2019 Less than 2 to 3 4 to 5 > 5 years Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Non-derivative Short-term loans $ 12,211,621 $ — $ — $ — $ 12,211,621 Payables 26,9 9 8 3 25 198,862 — — 27, 197 18 Guarantee deposits 100,584 97,108 — 99,002 296,694 Bonds payable 20,659,607 10,590,265 8,689,971 — 39,939,843 Long-term loans 6,104,795 19,631,931 13,097,986 12,000 38,846,712 Lease liabilities 740,939 1,413,978 1,180,955 3,792,192 7,128,064 Other financial liabilities — 12,668,287 8,445,826 — 21,114,113 Total $ 66, 815 871 $ 44,600,431 $ 31,414,738 $ 3,903,194 $ 146, 734 234 |
Details of Forward Exchange Contracts | The details of forward exchange contracts entered into by UMC are summarized as follows: As of December 31, 2018 Type Notional Amount Contract Period Forward exchange contracts Sell USD 28 million December 10, 2018~ January 7, 2019 |
Reconciliations for Fair Value Measurement in Level 3 Fair Value Hierarchy | Reconciliations for fair value measurement in Level 3 fair value hierarchy were as follows: Financial assets at fair value through profit or loss Financial assets at fair value through Common stock Preferred stock Funds Option Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2018 $ 3,832,537 $ 2,994,294 $ 1,183,940 $ 31,605 $ 8,042,376 $ 3,350,694 $ 233,326 $ 3,584,020 Recognized in profit (loss) (3,356 ) (394,931 ) 69,827 (31,605 ) (360,065 ) — — — Recognized in other comprehensive loss — — — — — (115,520 ) (49,300 ) (164,820 ) Acquisition 140,338 630,626 577,347 — 1,348,311 — — — Disposal (468,337 ) (310,025 ) — — (778,362 ) — — — Return of capital (22,954 ) — — — (22,954 ) — — — Transfer to Level 3 22,050 — — — 22,050 — — — Transfer out of Level 3 (442,138 ) — — — (442,138 ) — — — Exchange effect 19,551 51,564 18,674 — 89,789 — — — As of December 31, 2018 $ 3,077,691 $ 2,971,528 $ 1,849,788 $ — $ 7,899,007 $ 3,235,174 $ 184,026 $ 3,419,200 Financial assets at fair value through profit or loss Financial assets at fair value through other Common stock Preferred stock Funds Convertible Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2019 $ 3,077,691 $ 2,971,528 $ 1,849,788 $ — $ 7,899,007 $ 3,235,174 $ 184,026 $ 3,419,200 Recognized in profit (loss) (272,299 ) 273,047 (14,024 ) 6,145 (7,131 ) — — — Recognized in other comprehensive income (loss) — — — — — 199,244 (8,532 ) 190,712 Acquisition 159,476 396,890 204,082 51,956 812,404 — — — Disposal (1,475 ) (328,371 ) — — (329,846 ) (2,303,988 ) — (2,303,988 ) Return of capital (14,954 ) — — — (14,954 ) — — — Transfer to Level 3 — — — 49,706 49,706 — — — Transfer out of Level 3 (53,300 ) — — — (53,300 ) — — — Exchange effect (14,451 ) (33,800 ) (28,821 ) (3,099 ) (80,171 ) — — — As of December 31, 2019 $ 2,880,688 $ 3,279,294 $ 2,011,025 $ 104,708 $ 8,275,715 $ 1,130,430 $ 175,494 $ 1,305,924 |
Summary of Significant Unobservable Inputs of Fair Value Measurement in Level 3 Fair Value Hierarchy | Significant unobservable inputs of fair value measurement in Level 3 fair value hierarchy were as follow: As of December 31, 2018 Category of equity securities Valuation technique Significant unobservable inputs Quantitative Interrelationship between inputs Sensitivity analysis of Unlisted stock Market Approach Discount for lack of marketability 15%~50% The greater degree of lack of marketability, the lower the estimated fair value is determined. A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) and other comprehensive income (loss) for the year ended December 31, 2018 by NT$309 million and by NT$241 million, respectively. As of December 31, 2019 Category of equity securities Valuation technique Significant inputs Quantitative Interrelationship between inputs Sensitivity analysis of Unlisted stock Market Approach Discount for lack of marketability 0%~50% The greater degree of lack of marketability, the lower the estimated fair value is determined. A change of 5% in the discount for lack of marketability of the aforementioned fair values of unlisted stocks could decrease/increase the Company’s profit (loss) for the year ended December 31, 2019 by NT$267 million and NT$191 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2019 by NT$87 million. |
Recurring fair value measurement [member] | |
Statement [Line Items] | |
Assets and Liabilities Measured and Recorded at Fair Value | a. Assets and liabilities measured and recorded at fair value on a recurring basis: As of December 31, 2018 Level 1 Level 2 Level 3 Total NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) Financial assets: Financial assets at fair value through profit or loss, current $ 493,481 $ 34,969 $ — $ 528,450 Financial assets at fair value through profit or loss, noncurrent 3,612,243 44,597 7,899,007 11,555,847 Financial assets at fair value through other comprehensive income, noncurrent 8,166,277 — 3,419,200 11,585,477 As of December 31, 2019 Level 1 Level 2 Level 3 Total NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) Financial assets: Financial assets at fair value through profit or loss, current $ 668,476 $ — $ 54,318 $ 722,794 Financial assets at fair value through profit or loss, noncurrent 4,737,027 340,255 8,221,397 13,298,679 Financial assets at fair value through other comprehensive income, noncurrent 13,417,308 — 1,305,924 14,723,232 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | |
Statement [Line Items] | |
Assets and Liabilities Measured and Recorded at Fair Value | The fair values of the Company’s short-term financial instruments including cash and cash equivalents, receivables, refundable deposits, other financial assets-current, short-term loans, payables and guarantee deposits approximate their carrying amount due to their maturities within one year. As of December 31, 2018 Fair value measurements during reporting Items Fair value Level 1 Level 2 Level 3 Carrying NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Bonds payables (current portion included) $ 41,714,368 $ 23,929,019 $ 17,785,349 $ — $ 41,378,182 Long-term loans (current portion included) 30,826,215 — 30,826,215 — 30,826,215 As of December 31, 2019 Fair value measurements during reporting Items Fair value Level 1 Level 2 Level 3 Carrying NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Bonds payables (current portion included) $ 39,571,920 $ 21,347,047 $ 18,224,873 $ — $ 38,781,416 Long-term loans (current portion included) 33,902,074 — 33,902,074 — 33,902,074 |
Operating Segment Information (
Operating Segment Information (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Reportable Segment Information | Reportable segment information for the years ended December 31, 2017, 2018 and 2019 were as follows: For the year ended December 31, 2017 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 148,939,836 $ 344,870 $ 149,284,706 $ — $ 149,284,706 Operating revenues from sales among intersegments — 13,600 13,600 (13,600 ) — Segment net income (loss), net of tax 6,728,620 (665,895 ) 6,062,725 616,504 6,679,229 Acquisition of property, plant and equipment 44,229,488 6,788 44,236,276 — 44,236,276 Depreciation 50,737,240 227,880 50,965,120 — 50,965,120 Share of profit or loss of associates and joint ventures (258,959 ) (32,619 ) (291,578 ) 449,415 157,837 Income tax expense (benefit) 1,167,154 3 1,167,157 (174,676 ) 992,481 Impairment loss 632,207 318,128 950,335 — 950,335 For the year ended December 31, 2018 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 151,023,932 $ 228,639 $ 151,252,571 $ — $ 151,252,571 Operating revenues from sales among intersegments — 19,290 19,290 (19,290 ) — Segment net income (loss), net of tax 2,688,331 (602,809 ) 2,085,522 1,162,275 3,247,797 Acquisition of property, plant and equipment 19,589,770 305 19,590,075 — 19,590,075 Depreciation 49,777,242 171,347 49,948,589 — 49,948,589 Share of profit or loss of associates and joint ventures (1,201,986 ) (23,245 ) (1,225,231 ) 608,566 (616,665 ) Income tax expense (benefit) (456,058 ) (2,595 ) (458,653 ) (671,224 ) (1,129,877 ) Impairment loss 46,225 — 46,225 — 46,225 For the year ended December 31, 2019 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Operating revenues from external customers $ 148,123,306 $ 78,335 $ 148,201,641 $ — $ 148,201,641 Segment net income (loss), net of tax 6,156,681 (442,365 ) 5,714,316 (1, 138 066 ) 4,57 6 250 Acquisition of property, plant and equipment 16,518,483 — 16,518,483 — 16,518,483 Acquisition of intangible assets 2,443,593 — 2,443,593 — 2,443,593 Cash payments for the principal portion of the lease liability 614,845 18,643 633,488 — 633,488 Depreciation 47,038,876 134,005 47,172,881 — 47,172,881 Share of profit or loss of associates and joint ventures 733,044 — 733,044 (617,715 ) 115,329 Income tax expense (benefit) (414,104 ) 20,974 (393,130 ) 62 3 476 23 0 346 Impairment loss 33,160 84,974 118,134 — 118,134 As of December 31, 2018 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Segment assets $ 363,529,040 $ 1,263,368 $ 364,792,408 $ (2,195,179 ) $ 362,597,229 Segment liabilities $ 157,000,054 $ 1,068,722 $ 158,068,776 $ 130,970 $ 158,199,746 As of December 31, 2019 Wafer New Business Subtotal Adjustment Consolidated NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Segment assets $ 369,189,983 $ 924,149 $ 370,114,132 $ (3, 852 39 ) $ 366, 261 693 Segment liabilities $ 161,955,970 $ 1,157,878 $ 163,113,848 $ 23 930 $ 163, 347 77 |
Geographic Information, Non-current Assets | (2) Geographic information Non-current As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Taiwan $ 90,046,190 $ 73,481,714 Singapore 16,881,746 15,191,880 China (includes Hong Kong) 73,627,957 63,622,327 USA 31,919 70,498 Europe 155,489 24,383 Japan 232 12,265,769 Others — 3,309 Total $ 180,743,533 $ 164,659,880 |
Individual Customers Accounting for at least 10% of Operating Revenues | Individual customers accounting for at least 10% of operating revenues for the years ended December 31, 2017, 2018 and 2019 were as follows: For the years ended December 31, 2017 2018 2019 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Customer A from wafer fabrication segment $ 15,632,722 $ 15,357,470 $ 17,576,293 |
Capital Management (Tables)
Capital Management (Tables) | 12 Months Ended |
Dec. 31, 2019 | |
Text block1 [abstract] | |
Debt to Capital Ratios | The Company’s strategy, which is unchanged for the reporting periods, is to maintain a reasonable ratio in order to raise capital with reasonable cost. The debt to capital ratios as of December 31, 2018 and 2019 were as follows: As of December 31, 2018 2019 NT$ NT$ (In Thousands) (In Thousands) Total liabilities $ 158,199,746 $ 163,347,778 Less: Cash and cash equivalents (83,661,739 ) (95,492,477 ) Net debt 74,538,007 67,855,301 Total equity 204,397,483 202,913,915 Total capital $ 278,935,490 $ 270,769,216 Debt to capital ratios 26.72% 25.06% |
New Accounting Pronouncement _3
New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) - Additional Information (Detail) $ in Thousands, $ in Thousands | Jan. 01, 2019TWD ($) | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) |
Significant Changes In Financial Statement Line Items DueTo Application Of IFRS9, IAS39 and IFRS7 [line items] | |||||
Adjustments for decrease in other current assets | $ 5,769,041 | $ 192,880 | $ 743,519 | $ (4,397,764) | |
Bottom of range [member] | |||||
Significant Changes In Financial Statement Line Items DueTo Application Of IFRS9, IAS39 and IFRS7 [line items] | |||||
Hedge effectiveness percentage | 80.00% | 80.00% | |||
Top of range [member] | |||||
Significant Changes In Financial Statement Line Items DueTo Application Of IFRS9, IAS39 and IFRS7 [line items] | |||||
Hedge effectiveness percentage | 125.00% | 125.00% | |||
IFRS 16 [member] | |||||
Significant Changes In Financial Statement Line Items DueTo Application Of IFRS9, IAS39 and IFRS7 [line items] | |||||
Adjustments for decrease in other current assets | $ 15,000 | ||||
Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16 | 2.64% | ||||
Adjustments for Increase in right-of-use assets | $ 8,578,000 | ||||
Adjustments for decrease in other noncurrent assets | 2,621,000 | ||||
Adjustments for decrease in trade and other payables | 40,000 | ||||
Adjustments for increase in lease liabilities | 6,006,000 | ||||
Adjustments for decrease in APIC | 10,000 | ||||
Adjustments for decrease through changes in other components of equity | $ 14,000 |
New Accounting Pronouncement _4
New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) - Summary of Explanation of difference between operating lease commitments (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018 |
Significant changes in financial statement line items due to application of IFRS16 [line items] | |||
Present value discounted at the incremental borrowing rate on January 1, 2019 | $ 5,997,551 | ||
Add: An extension option reasonably certain to be exercised | 8,906 | ||
Lease liabilities | $ 6,031,025 | $ 6,006,457 | $ 0 |
IAS 17 [Member] | |||
Significant changes in financial statement line items due to application of IFRS16 [line items] | |||
Operating lease commitments | $ 7,408,369 |
Summary of Significant Accoun_4
Summary of Significant Accounting Policies - Consolidated Entities (Detail) | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
UMC GROUP (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | IC Sales | |
Percentage of ownership | 100.00% | 100.00% |
UNITED MICROELECTRONICS (EUROPE) B.V. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Marketing support activities | |
Percentage of ownership | 100.00% | 100.00% |
UMC CAPITAL CORP. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
GREEN EARTH LIMITED (GE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
TLC CAPITAL CO., LTD. (TLC) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Venture capital | |
Percentage of ownership | 100.00% | 100.00% |
UMC INVESTMENT (SAMOA) LIMITED [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
FORTUNE VENTURE CAPITAL CORP. (FORTUNE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Consulting and planning for venture capital | |
Percentage of ownership | 100.00% | 100.00% |
UMC GROUP JAPAN [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | IC Sales | |
Percentage of ownership | 100.00% | 100.00% |
UMC KOREA CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Marketing support activities | |
Percentage of ownership | 100.00% | 100.00% |
OMNI GLOBAL LIMITED (OMNI) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
SINO PARAGON LIMITED [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
BEST ELITE INTERNATIONAL LIMITED (BE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
NEXPOWER TECHNOLOGY CORP. (NEXPOWER) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC, FORTUNE and TLC | |
Business nature | Sales and manufacturing of solar power batteries | |
Percentage of ownership | 93.36% | 93.36% |
WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC and FORTUNE | |
Business nature | Sales and manufacturing of integrated circuits | |
Percentage of ownership | 80.49% | 78.47% |
UMC Capital (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC CAPITAL CORP. | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
SOARING CAPITAL CORP. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | TLC | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
UNITRUTH ADVISOR (SHANGHAI) CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | SOARING CAPITAL CORP. | |
Business nature | Investment holding and advisory | |
Percentage of ownership | 100.00% | 100.00% |
UNITED MICROCHIP CORPORATION [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | GE | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | FORTUNE | |
Business nature | Energy technical services | |
Percentage of ownership | 100.00% | 100.00% |
EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | TERA ENERGY | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
EVERRICH (SHANDONG) ENERGY CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | EVERRICH-HK | |
Business nature | Solar engineering integrated design services | |
Percentage of ownership | 100.00% | 100.00% |
UNITED MICROTECHNOLOGY CORPORATION (NEW YORK) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Research and development | |
Percentage of ownership | 100.00% | 100.00% |
UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Research and development | |
Percentage of ownership | 100.00% | 100.00% |
ECP VITA PTE. LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Insurance | |
Percentage of ownership | 100.00% | 100.00% |
UMC TECHNOLOGY JAPAN CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Semiconductor manufacturing technology development and consulting services | |
Percentage of ownership | 100.00% | 100.00% |
WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | WAVETEK | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
WAVETEK MICROELECTRONICS CORPORATION (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | WAVETEK-SAMOA | |
Business nature | Sales and marketing service | |
Percentage of ownership | 100.00% | 100.00% |
SOCIALNEX ITALIA 1 S.R.L. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | NEXPOWER | |
Business nature | Photovoltaic power plant | |
Percentage of ownership | 0.00% | 100.00% |
INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | BE | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
OAKWOOD ASSOCIATES LIMITED (OAKWOOD) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | INFOSHINE | |
Business nature | Investment holding | |
Percentage of ownership | 100.00% | 100.00% |
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OAKWOOD | |
Business nature | Sales and manufacturing of integrated circuits | |
Percentage of ownership | 98.14% | 98.14% |
UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | HJ | |
Business nature | Integrated circuits design services | |
Percentage of ownership | 100.00% | 100.00% |
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UNITED MICROCHIP CORPORATION and HJ | |
Business nature | Sales and manufacturing of integrated circuits | |
Percentage of ownership | 65.22% | 65.22% |
UNITED SEMICONDUCTOR JAPAN CO., LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Sales and manufacturing of integrated circuits | |
Percentage of ownership | 100.00% | 0.00% |
Summary of Significant Accoun_5
Summary of Significant Accounting Policies - Additional Information (Detail) | Dec. 31, 2019Exchange_Rate |
Disclosure of initial application of standards or interpretations [abstract] | |
Convenience translation into U.S. Dollars, rate of USD1.00 | 29.91 |
Summary of Significant Accoun_6
Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Detail) | 12 Months Ended |
Dec. 31, 2019 | |
Buildings [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 7 years |
Buildings [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 56 years |
Machinery and equipment [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 6 years |
Machinery and equipment [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 9 years |
Transportation equipment [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 5 years |
Transportation equipment [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 7 years |
Furniture and fixtures [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 1 year |
Furniture and fixtures [member] | Top of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 9 years |
Leasehold improvement [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | The shorter of lease terms or useful lives |
Summary of Significant Accoun_7
Summary of Significant Accounting Policies - Estimated Useful Lives of Intangible Assets (Detail) | 12 Months Ended |
Dec. 31, 2019 | |
Others [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | the shorter of the contract term or estimated useful life (3 years) |
Summary of Significant Accoun_8
Summary of Significant Accounting Policies - Estimated Useful Lives of Intangible Assets (Parenthetical) (Detail) | 12 Months Ended |
Dec. 31, 2019 | |
Software [member] | Bottom of range [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | 3 years |
Software [member] | Top of range [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | 6 years |
Patent and technology license fee [member] | Bottom of range [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | 5 years |
Patent and technology license fee [member] | Top of range [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | 10 years |
Contents of Significant Accou_3
Contents of Significant Accounts - Cash and Cash Equivalents (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2018USD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) |
Cash and cash equivalents [abstract] | ||||||
Cash on hand and petty cash | $ 6,074 | $ 6,091 | ||||
Checking and savings accounts | 26,384,925 | 25,021,265 | ||||
Time deposits | 59,966,481 | 49,139,549 | ||||
Repurchase agreements collateralized by government bonds and corporate notes | 9,134,997 | 9,494,834 | ||||
Total | $ 95,492,477 | $ 3,192,661 | $ 83,661,739 | $ 2,797,116 | $ 81,674,572 | $ 57,578,981 |
Contents of Significant Accou_4
Contents of Significant Accounts - Financial Assets at Fair Value through Profit or Loss (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of financial assets [line items] | |||
Total | $ 14,021,473 | $ 12,084,297 | |
Current | 722,794 | $ 24,166 | 528,450 |
Noncurrent | 13,298,679 | $ 444,623 | 11,555,847 |
Common stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 8,381,085 | 6,814,915 | |
Preferred stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 3,299,419 | 2,998,228 | |
Funds [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 2,195,524 | 2,030,688 | |
Convertible bonds [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 145,445 | 236,905 | |
Forward exchange contracts [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 0 | 3,561 | |
Option [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | $ 0 | $ 0 |
Contents of Significant Accou_5
Contents of Significant Accounts - Accounts Receivable, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of financial assets [line items] | |||
Accounts receivable, net | $ 25,514,883 | $ 853,055 | $ 23,735,989 |
Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 26,136,293 | 23,784,141 | |
Loss Allowance [member] | |||
Disclosure of financial assets [line items] | |||
Loss Allowance | $ (621,410) | $ (48,152) |
Contents of Significant Accou_6
Contents of Significant Accounts - Aging Analysis of Accounts Receivables, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of financial assets [line items] | |||
Accounts receivable, net | $ 25,514,883 | $ 853,055 | $ 23,735,989 |
Neither past due nor impaired [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 21,924,797 | 18,271,304 | |
Past due but not impaired [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 3,590,086 | 5,464,685 | |
Past due but not impaired [member] | Less than or equal to 30 days [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 2,364,311 | 3,407,690 | |
Past due but not impaired [member] | 31 to 60 days [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 204,791 | 739,054 | |
Past due but not impaired [member] | 61 to 90 days [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 85,131 | 545,366 | |
Past due but not impaired [member] | 91 to 120 days [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | 138,788 | 365,007 | |
Past due but not impaired [member] | Greater than or equal to 121 days [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable, net | $ 797,065 | $ 407,568 |
Contents of Significant Accou_7
Contents of Significant Accounts - Movement of Loss Allowance (Detail) - Trade receivables [member] - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of financial assets [line items] | ||
Beginning balance | $ 48,152 | $ 39,578 |
Net charge for the period | 573,258 | 8,574 |
Ending balance | $ 621,410 | $ 48,152 |
Contents of Significant Accou_8
Contents of Significant Accounts - Inventories, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Classes of current inventories [abstract] | |||
Raw materials | $ 5,102,571 | $ 3,766,056 | |
Supplies and spare parts | 3,548,376 | 3,133,737 | |
Work in process | 11,309,718 | 10,034,488 | |
Finished goods | 1,754,137 | 1,268,838 | |
Total | $ 21,714,802 | $ 726,005 | $ 18,203,119 |
Contents of Significant Accou_9
Contents of Significant Accounts - Inventories, Net - Additional Information (Detail) - TWD ($) | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Classes of current inventories [abstract] | |||
Inventories recognized in operating costs | $ 122,999,000,000 | $ 123,795,000,000 | $ 118,252,000,000 |
Write-down of inventories | 820,000,000 | 1,698,000,000 | 2,256,000,000 |
Inventories pledged | $ 0 | $ 0 | $ 0 |
Contents of Significant Acco_10
Contents of Significant Accounts - Financial Assets at Fair Value through Other Comprehensive Income, Non-Current (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of financial assets [line items] | |||
Financial assets at fair value through other comprehensive income, non-current | $ 14,723,232 | $ 492,251 | $ 11,585,477 |
Common stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets at fair value through other comprehensive income, non-current | 14,547,738 | 11,401,451 | |
Preferred stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets at fair value through other comprehensive income, non-current | $ 175,494 | $ 184,026 |
Contents of Significant Acco_11
Contents of Significant Accounts - Summary of Fair Value of Each Investment in Equity Instrument (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
SILICON INTEGRATED SYSTEMS CORP. [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | $ 961,898 | $ 1,032,930 |
UNIMICRON HOLDING LIMITED [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 795,795 | 561,261 |
MIE FUJITSU SEMICONDUCTOR LIMITED [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 0 | 2,220,103 |
UNIMICRON TECHNOLOGY CORP. [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 8,237,712 | 4,373,833 |
ITE TECH. INC. [Member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 616,333 | 424,383 |
NOVATEK MICROELECTRONICS CORP. [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 3,601,365 | 2,335,131 |
SHIN-ETSU HANDOTAI TAIWAN CO., LTD. [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | 334,635 | 453,810 |
MTIC HOLDINGS PTE. LTD. [member] | ||
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] | ||
Fair value of investments in equity instruments | $ 175,494 | $ 184,026 |
Contents of Significant Acco_12
Contents of Significant Accounts - Summary of income recognized in profit or loss and other comprehensive income (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Dividend Income [Abstract] | ||
Held at end of period | $ 365,052 | $ 268,406 |
Derecognized during the period | 0 | 0 |
Total | $ 365,052 | $ 268,406 |
Contents of Significant Acco_13
Contents of Significant Accounts - Summary of disposed and derecognized partial equity instrument investments measured at fair value through other comprehensive income (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure Of Disposed And Derecognized Partial Equity Instrument Investments Measured At Fair Value Through Other Comprehensive Income [Abstract] | ||
Fair value on the date of sale | $ 2,348,454 | $ 0 |
Cumulative gains (losses) reclassified to retained earnings due to derecognition | $ (551,903) | $ 0 |
Contents of Significant Acco_14
Contents of Significant Accounts - Details of Investments Accounted for Under the Equity Method (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019TWD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2019USD ($) | |
Investments in associates and joint ventures [line items] | |||
Amount | $ 9,564,517 | $ 7,948,413 | $ 319,777 |
WINAICO SOLAR PROJEKT 1 GMBH [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 0 | $ 0 | |
Percentage of ownership or voting rights, Joint ventures | 0.00% | 50.00% | |
WINAICO IMMOBILIEN GMBH [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 0 | $ 0 | |
Percentage of ownership or voting rights, Joint ventures | 44.78% | 44.78% | |
CLIENTRON CORP. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 276,515 | $ 249,663 | |
Percentage of ownership or voting rights, Associates | 21.90% | 22.39% | |
FARADAY TECHNOLOGY CORP. (FARADAY) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 1,473,028 | $ 1,483,111 | |
Percentage of ownership or voting rights, Associates | 13.78% | 13.78% | |
MTIC HOLDINGS PTE. LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 18,157 | $ 3,026 | |
Percentage of ownership or voting rights, Associates | 45.44% | 45.44% | |
YUNG LI INVESTMENTS, INC. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 0 | $ 2,213 | |
Percentage of ownership or voting rights, Associates | 0.00% | 45.16% | |
PURIUMFIL INC.[Member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 7,164 | $ 0 | |
Percentage of ownership or voting rights, Associates | 44.45% | 0.00% | |
UNITECH CAPITAL INC. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 642,660 | $ 568,005 | |
Percentage of ownership or voting rights, Associates | 42.00% | 42.00% | |
TRIKNIGHT CAPITAL CORPORATION [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 2,281,631 | $ 1,520,575 | |
Percentage of ownership or voting rights, Associates | 40.00% | 40.00% | |
HSUN CHIEH INVESTMENT CO., LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 1,686,502 | $ 1,608,551 | |
Percentage of ownership or voting rights, Associates | 36.49% | 36.49% | |
HSUN CHIEH CAPITAL CORP. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 122,060 | $ 161,319 | |
Percentage of ownership or voting rights, Associates | 30.00% | 30.00% | |
YANN YUAN INVESTMENT CO., LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 2,761,821 | $ 2,032,013 | |
Percentage of ownership or voting rights, Associates | 30.87% | 30.87% | |
VSENSE CO., LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 592 | $ 31,544 | |
Percentage of ownership or voting rights, Associates | 25.90% | 26.89% | |
UNITED LED CORPORATION HONG KONG LIMITED [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 121,973 | $ 167,953 | |
Percentage of ownership or voting rights, Associates | 25.14% | 25.14% | |
TRANSLINK CAPITAL PARTNERS I, L.P. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 172,414 | $ 120,440 | |
Percentage of ownership or voting rights, Associates | 10.38% | 10.38% |
Contents of Significant Acco_15
Contents of Significant Accounts - Investments Accounted For Under the Equity Method - Additional Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2019USD ($) | |
Investments in associates and joint ventures [line items] | ||||
Investments accounted for using equity method for which there are published price quotations | $ 9,564,517 | $ 7,948,413 | $ 319,777 | |
Aggregated individually immaterial associates and joint ventures [member] | ||||
Investments in associates and joint ventures [line items] | ||||
Exchange differences arising from translation of the foreign entity | (9,000) | (16,000) | $ 45,000 | |
Investments with published price quotations [member] | ||||
Investments in associates and joint ventures [line items] | ||||
Investments accounted for using equity method for which there are published price quotations | 1,750,000 | 1,733,000 | ||
Investments with published price quotations [member] | Fair value [member] | ||||
Investments in associates and joint ventures [line items] | ||||
Investments accounted for using equity method for which there are published price quotations | $ 2,244,000 | $ 1,621,000 |
Contents of Significant Acco_16
Contents of Significant Accounts - Aggregate Amount of the Company's Share of its Individually Immaterial Associates (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of associates [line items] | ||||
Profit (Loss) from continuing operations | $ 115,329 | $ 3,856 | $ (616,665) | $ 157,837 |
Aggregated individually immaterial associates [member] | ||||
Disclosure of associates [line items] | ||||
Profit (Loss) from continuing operations | 115,329 | (616,665) | 77,589 | |
Post-tax profit from discontinued operations | 0 | 0 | 80,248 | |
Other comprehensive income (loss) | 873,308 | (82,871) | 526,773 | |
Total comprehensive income (loss) | $ 988,637 | $ (699,536) | $ 684,610 |
Contents of Significant Acco_17
Contents of Significant Accounts - Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | $ 172,846,595 | |||
Depreciation | 47,172,881 | $ 1,577,161 | $ 49,948,589 | $ 50,965,120 |
Impairment loss | 84,974 | 0 | 0 | |
Ending balance | 150,374,096 | $ 5,027,553 | 172,846,595 | |
Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 148,083,855 | |||
Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 2,290,241 | |||
Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 912,036,677 | 894,222,557 | ||
Additions | 17,579,689 | |||
Disposals | (2,453,877) | |||
Disposal of a subsidiary | (233,636) | |||
Transfers and reclassifications | 573,884 | |||
Exchange effect | 2,348,060 | |||
Ending balance | 912,036,677 | 894,222,557 | ||
Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 907,431,923 | |||
Additions | 14,579,988 | |||
Disposals | (8,360,986) | |||
Acquisition of a subsidiary | 11,466,543 | |||
Disposal of a subsidiary | (161,781) | |||
Transfers and reclassifications | 1,055,821 | |||
Exchange effect | (7,776,793) | |||
Ending balance | 918,234,715 | 907,431,923 | ||
Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 4,604,754 | |||
Disposals | (940) | |||
Acquisition of a subsidiary | 31,075 | |||
Transfers and reclassifications | (78,659) | |||
Exchange effect | (18,731) | |||
Ending balance | 4,537,499 | 4,604,754 | ||
Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 739,190,082 | 688,480,876 | ||
Depreciation | 49,948,589 | |||
Disposals | (2,387,601) | |||
Disposal of a subsidiary | (188,121) | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 3,336,339 | |||
Ending balance | 739,190,082 | 688,480,876 | ||
Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 737,049,210 | |||
Depreciation | 46,347,551 | |||
Impairment loss | 84,974 | |||
Disposals | (8,320,986) | |||
Disposal of a subsidiary | (127,455) | |||
Transfers and reclassifications | 66,871 | |||
Exchange effect | (4,949,305) | |||
Ending balance | 770,150,860 | 737,049,210 | ||
Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 2,140,872 | |||
Depreciation | 180,785 | |||
Disposals | (651) | |||
Transfers and reclassifications | (67,285) | |||
Exchange effect | (6,463) | |||
Ending balance | 2,247,258 | 2,140,872 | ||
Land [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,314,402 | |||
Ending balance | 1,314,402 | |||
Land [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 1,692,123 | |||
Land [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 459,635 | |||
Land [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,314,402 | 1,314,402 | ||
Disposals | 0 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | 1,314,402 | 1,314,402 | ||
Land [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 861,487 | |||
Additions | 0 | |||
Disposals | 0 | |||
Acquisition of a subsidiary | 871,700 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (41,064) | |||
Ending balance | 1,692,123 | 861,487 | ||
Land [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 452,915 | |||
Disposals | 0 | |||
Acquisition of a subsidiary | 7,051 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (331) | |||
Ending balance | 459,635 | 452,915 | ||
Land [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 0 | 0 | ||
Depreciation | 0 | |||
Disposals | 0 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | 0 | 0 | ||
Land [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 0 | |||
Depreciation | 0 | |||
Impairment loss | 0 | |||
Disposals | 0 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | 0 | 0 | ||
Land [member] | Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 0 | |||
Depreciation | 0 | |||
Disposals | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | 0 | 0 | ||
Buildings [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 19,841,058 | |||
Ending balance | 19,841,058 | |||
Buildings [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 19,487,068 | |||
Buildings [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 1,618,235 | |||
Buildings [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 38,306,302 | 38,073,660 | ||
Additions | 0 | |||
Disposals | (64,878) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 375,854 | |||
Exchange effect | (78,334) | |||
Ending balance | 38,306,302 | 38,073,660 | ||
Buildings [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 35,681,733 | |||
Additions | 0 | |||
Disposals | (4,637) | |||
Acquisition of a subsidiary | 3,087,585 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 211,285 | |||
Exchange effect | (538,378) | |||
Ending balance | 38,437,588 | 35,681,733 | ||
Buildings [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 2,624,569 | |||
Disposals | (623) | |||
Acquisition of a subsidiary | 24,024 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (10,699) | |||
Ending balance | 2,637,271 | 2,624,569 | ||
Buildings [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 18,465,244 | 16,960,853 | ||
Depreciation | 1,535,409 | |||
Disposals | (57,812) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 297 | |||
Exchange effect | 26,497 | |||
Ending balance | 18,465,244 | 16,960,853 | ||
Buildings [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 17,549,256 | |||
Depreciation | 1,542,864 | |||
Impairment loss | 0 | |||
Disposals | (4,624) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (136,976) | |||
Ending balance | 18,950,520 | 17,549,256 | ||
Buildings [member] | Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 915,988 | |||
Depreciation | 106,250 | |||
Disposals | (334) | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (2,868) | |||
Ending balance | 1,019,036 | 915,988 | ||
Machinery and equipment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 139,213,317 | |||
Ending balance | 139,213,317 | |||
Machinery and equipment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 119,824,607 | |||
Machinery and equipment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 0 | |||
Machinery and equipment [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 853,688,505 | 826,268,919 | ||
Additions | 0 | |||
Disposals | (2,330,437) | |||
Disposal of a subsidiary | (224,895) | |||
Transfers and reclassifications | 27,447,023 | |||
Exchange effect | 2,527,895 | |||
Ending balance | 853,688,505 | 826,268,919 | ||
Machinery and equipment [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 853,481,220 | |||
Additions | 0 | |||
Disposals | (8,122,361) | |||
Acquisition of a subsidiary | 6,704,236 | |||
Disposal of a subsidiary | (161,781) | |||
Transfers and reclassifications | 20,723,346 | |||
Exchange effect | (7,077,088) | |||
Ending balance | 865,547,572 | 853,481,220 | ||
Machinery and equipment [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 207,285 | |||
Disposals | 0 | |||
Acquisition of a subsidiary | 0 | |||
Transfers and reclassifications | (81,872) | |||
Exchange effect | 0 | |||
Ending balance | 125,413 | 207,285 | ||
Machinery and equipment [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 714,475,188 | 665,771,857 | ||
Depreciation | 47,871,174 | |||
Disposals | (2,286,359) | |||
Disposal of a subsidiary | (180,843) | |||
Transfers and reclassifications | (3,164) | |||
Exchange effect | 3,302,523 | |||
Ending balance | 714,475,188 | 665,771,857 | ||
Machinery and equipment [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 714,286,307 | |||
Depreciation | 44,307,925 | |||
Impairment loss | 84,974 | |||
Disposals | (8,105,713) | |||
Disposal of a subsidiary | (127,455) | |||
Transfers and reclassifications | 66,682 | |||
Exchange effect | (4,789,755) | |||
Ending balance | 745,722,965 | 714,286,307 | ||
Machinery and equipment [member] | Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 188,881 | |||
Depreciation | 3,827 | |||
Disposals | 0 | |||
Transfers and reclassifications | (67,295) | |||
Exchange effect | 0 | |||
Ending balance | 125,413 | 188,881 | ||
Transportation equipment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 20,921 | |||
Ending balance | 20,921 | |||
Transportation equipment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 18,115 | |||
Transportation equipment [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 66,355 | 75,782 | ||
Additions | 0 | |||
Disposals | (18,363) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 8,884 | |||
Exchange effect | 52 | |||
Ending balance | 66,355 | 75,782 | ||
Transportation equipment [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 66,355 | |||
Additions | 0 | |||
Disposals | (3,563) | |||
Acquisition of a subsidiary | 9 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 3,557 | |||
Exchange effect | (449) | |||
Ending balance | 65,909 | 66,355 | ||
Transportation equipment [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 45,434 | 57,031 | ||
Depreciation | 6,080 | |||
Disposals | (17,963) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 286 | |||
Ending balance | 45,434 | 57,031 | ||
Transportation equipment [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 45,434 | |||
Depreciation | 6,105 | |||
Impairment loss | 0 | |||
Disposals | (3,563) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (182) | |||
Ending balance | 47,794 | 45,434 | ||
Furniture and fixtures [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,908,214 | |||
Ending balance | 1,908,214 | |||
Furniture and fixtures [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 1,458,690 | |||
Furniture and fixtures [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 212,371 | |||
Furniture and fixtures [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 8,056,901 | 7,675,798 | ||
Additions | 0 | |||
Disposals | (40,199) | |||
Disposal of a subsidiary | (6,515) | |||
Transfers and reclassifications | 433,665 | |||
Exchange effect | (5,848) | |||
Ending balance | 8,056,901 | 7,675,798 | ||
Furniture and fixtures [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 6,736,916 | |||
Additions | 0 | |||
Disposals | (196,487) | |||
Acquisition of a subsidiary | 54,978 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 285,891 | |||
Exchange effect | (39,174) | |||
Ending balance | 6,842,124 | 6,736,916 | ||
Furniture and fixtures [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,319,985 | |||
Disposals | (317) | |||
Acquisition of a subsidiary | 0 | |||
Transfers and reclassifications | 3,213 | |||
Exchange effect | (7,701) | |||
Ending balance | 1,315,180 | 1,319,985 | ||
Furniture and fixtures [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 6,148,687 | 5,636,982 | ||
Depreciation | 533,628 | |||
Disposals | (25,467) | |||
Disposal of a subsidiary | (5,264) | |||
Transfers and reclassifications | 2,867 | |||
Exchange effect | 5,941 | |||
Ending balance | 6,148,687 | 5,636,982 | ||
Furniture and fixtures [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 5,112,684 | |||
Depreciation | 488,216 | |||
Impairment loss | 0 | |||
Disposals | (195,766) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | (325) | |||
Exchange effect | (21,375) | |||
Ending balance | 5,383,434 | 5,112,684 | ||
Furniture and fixtures [member] | Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,036,003 | |||
Depreciation | 70,708 | |||
Disposals | (317) | |||
Transfers and reclassifications | 10 | |||
Exchange effect | (3,595) | |||
Ending balance | 1,102,809 | 1,036,003 | ||
Leasehold improvement [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 3,869 | |||
Ending balance | 3,869 | |||
Leasehold improvement [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 19,736 | |||
Leasehold improvement [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 53,449 | 52,557 | ||
Additions | 0 | |||
Disposals | 0 | |||
Disposal of a subsidiary | (2,226) | |||
Transfers and reclassifications | 2,049 | |||
Exchange effect | 1,069 | |||
Ending balance | 53,449 | 52,557 | ||
Leasehold improvement [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 53,449 | |||
Additions | 0 | |||
Disposals | (6,180) | |||
Acquisition of a subsidiary | 8,372 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 11,712 | |||
Exchange effect | (1,470) | |||
Ending balance | 65,883 | 53,449 | ||
Leasehold improvement [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 49,580 | 48,204 | ||
Depreciation | 2,298 | |||
Disposals | 0 | |||
Disposal of a subsidiary | (2,014) | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 1,092 | |||
Ending balance | 49,580 | 48,204 | ||
Leasehold improvement [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 49,580 | |||
Depreciation | 2,441 | |||
Impairment loss | 0 | |||
Disposals | (5,371) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 514 | |||
Exchange effect | (1,017) | |||
Ending balance | 46,147 | 49,580 | ||
Construction in progress and equipment awaiting inspection [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 10,544,814 | |||
Ending balance | 10,544,814 | |||
Construction in progress and equipment awaiting inspection [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Ending balance | 5,583,516 | |||
Construction in progress and equipment awaiting inspection [member] | Cost [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 10,550,763 | 20,761,439 | ||
Additions | 17,579,689 | |||
Disposals | 0 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | (27,693,591) | |||
Exchange effect | (96,774) | |||
Ending balance | 10,550,763 | 20,761,439 | ||
Construction in progress and equipment awaiting inspection [member] | Cost [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 10,550,763 | |||
Additions | 14,579,988 | |||
Disposals | (27,758) | |||
Acquisition of a subsidiary | 739,663 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | (20,179,970) | |||
Exchange effect | (79,170) | |||
Ending balance | 5,583,516 | 10,550,763 | ||
Construction in progress and equipment awaiting inspection [member] | Accumulated depreciation, amortisation and impairment [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 5,949 | 5,949 | ||
Depreciation | 0 | |||
Disposals | 0 | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | 5,949 | $ 5,949 | ||
Construction in progress and equipment awaiting inspection [member] | Accumulated depreciation, amortisation and impairment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 5,949 | |||
Depreciation | 0 | |||
Impairment loss | 0 | |||
Disposals | (5,949) | |||
Disposal of a subsidiary | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | 0 | |||
Ending balance | $ 0 | $ 5,949 |
Contents of Significant Acco_18
Contents of Significant Accounts - Property, Plant and Equipment - Additional Information (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Disclosure of detailed information about property, plant and equipment [line items] | |||
Impairment loss | $ 84,974 | $ 0 | $ 0 |
Cash-generating units [member] | |||
Disclosure of detailed information about property, plant and equipment [line items] | |||
Impairment loss | $ 85,000 |
Contents of Significant Acco_19
Contents of Significant Accounts - Leases (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2019USD ($) | Jan. 01, 2019TWD ($) | Dec. 31, 2018TWD ($) | |
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | $ 644,545 | ||||
Ending balance | 8,291,517 | $ 277,216 | |||
Current | 569,957 | $ 19,056 | $ 0 | ||
Noncurrent | 5,461,068 | $ 182,583 | 0 | ||
Total | 6,031,025 | $ 6,006,457 | $ 0 | ||
Land [member] | |||||
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | 366,827 | ||||
Ending balance | 5,700,136 | ||||
Buildings [member] | |||||
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | 87,572 | ||||
Ending balance | 473,558 | ||||
Machinery and equipment [member] | |||||
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | 180,115 | ||||
Ending balance | 2,092,924 | ||||
Transportation equipment [member] | |||||
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | 6,001 | ||||
Ending balance | 12,019 | ||||
Other equipment [member] | |||||
Disclosure Of Lease By Lessee [Line Items] | |||||
Depreciation | 4,030 | ||||
Ending balance | $ 12,880 |
Contents of Significant Acco_20
Contents of Significant Accounts - Leases - Additional Information (Detail) $ in Millions | 12 Months Ended |
Dec. 31, 2019TWD ($) | |
Disclosures Of Leases [Abstract] | |
Addition to right of use assets | $ 264 |
Contents of Significant Acco_21
Contents of Significant Accounts - Intangible Assets (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019TWD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2019USD ($) | |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | $ 2,991,804 | ||
Ending balance | 5,198,247 | $ 2,991,804 | |
Net carrying amount: | |||
Intangible assets | 5,198,247 | 2,991,804 | $ 173,796 |
Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 8,842,561 | 9,349,370 | |
Additions | 3,325,193 | 826,531 | |
Write-off | (1,975,688) | (1,589,850) | |
Disposal of a subsidiary | (93) | (176) | |
Acquisition of a subsidiary | 1,318,754 | ||
Reclassifications | 53,661 | 474,127 | |
Exchange effect | (470,717) | (217,441) | |
Ending balance | 11,093,671 | 8,842,561 | |
Net carrying amount: | |||
Intangible assets | 8,842,561 | 8,842,561 | |
Accumulated depreciation, amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 5,850,757 | 5,561,861 | |
Amortization | 2,166,610 | 1,912,802 | |
Write-off | (1,975,688) | (1,589,850) | |
Disposal of a subsidiary | (93) | ||
Reclassifications | 414 | ||
Exchange effect | (153,974) | (34,056) | |
Ending balance | 5,895,424 | 5,850,757 | |
Impairment loss | 7,398 | ||
Net carrying amount: | |||
Intangible assets | 5,850,757 | 5,850,757 | |
Goodwill [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 15,012 | ||
Ending balance | 7,614 | 15,012 | |
Net carrying amount: | |||
Intangible assets | 15,012 | 15,012 | |
Goodwill [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 15,012 | 15,188 | |
Additions | 0 | 0 | |
Write-off | 0 | 0 | |
Disposal of a subsidiary | 0 | (176) | |
Acquisition of a subsidiary | 0 | ||
Reclassifications | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | 15,012 | 15,012 | |
Net carrying amount: | |||
Intangible assets | 15,012 | 15,012 | |
Goodwill [member] | Accumulated depreciation, amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 0 | 0 | |
Amortization | 0 | 0 | |
Write-off | 0 | 0 | |
Disposal of a subsidiary | 0 | ||
Reclassifications | 0 | ||
Exchange effect | 0 | 0 | |
Ending balance | 7,398 | 0 | |
Impairment loss | 7,398 | ||
Net carrying amount: | |||
Intangible assets | 0 | 0 | |
Software [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 524,155 | ||
Ending balance | 2,395,972 | 524,155 | |
Net carrying amount: | |||
Intangible assets | 524,155 | 524,155 | |
Software [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 1,125,804 | 1,080,726 | |
Additions | 1,666,599 | 0 | |
Write-off | (383,745) | (422,591) | |
Disposal of a subsidiary | 0 | 0 | |
Acquisition of a subsidiary | 964,903 | ||
Reclassifications | 53,661 | 474,127 | |
Exchange effect | (80,074) | (6,458) | |
Ending balance | 3,347,148 | 1,125,804 | |
Net carrying amount: | |||
Intangible assets | 1,125,804 | 1,125,804 | |
Software [member] | Accumulated depreciation, amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 601,649 | 670,014 | |
Amortization | 760,010 | 357,624 | |
Write-off | (383,745) | (422,591) | |
Disposal of a subsidiary | 0 | ||
Reclassifications | 414 | ||
Exchange effect | (27,152) | (3,398) | |
Ending balance | 951,176 | 601,649 | |
Impairment loss | 0 | ||
Net carrying amount: | |||
Intangible assets | 601,649 | 601,649 | |
Patent and technology license fee [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 1,668,218 | ||
Ending balance | 1,884,282 | 1,668,218 | |
Net carrying amount: | |||
Intangible assets | 1,668,218 | 1,668,218 | |
Patent and technology license fee [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 4,511,629 | 4,687,751 | |
Additions | 806,915 | 214,278 | |
Write-off | (953,128) | (179,418) | |
Disposal of a subsidiary | 0 | 0 | |
Acquisition of a subsidiary | 198,181 | ||
Reclassifications | 0 | 0 | |
Exchange effect | (380,092) | (210,982) | |
Ending balance | 4,183,505 | 4,511,629 | |
Net carrying amount: | |||
Intangible assets | 4,511,629 | 4,511,629 | |
Patent and technology license fee [member] | Accumulated depreciation, amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 2,843,411 | 2,585,190 | |
Amortization | 531,790 | 468,296 | |
Write-off | (953,128) | (179,418) | |
Disposal of a subsidiary | 0 | ||
Reclassifications | 0 | ||
Exchange effect | (122,850) | (30,657) | |
Ending balance | 2,299,223 | 2,843,411 | |
Impairment loss | 0 | ||
Net carrying amount: | |||
Intangible assets | 2,843,411 | 2,843,411 | |
Others [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 784,419 | ||
Ending balance | 910,379 | 784,419 | |
Net carrying amount: | |||
Intangible assets | 784,419 | 784,419 | |
Others [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 3,190,116 | 3,565,705 | |
Additions | 851,679 | 612,253 | |
Write-off | (638,815) | (987,841) | |
Disposal of a subsidiary | (93) | 0 | |
Acquisition of a subsidiary | 155,670 | ||
Reclassifications | 0 | 0 | |
Exchange effect | (10,551) | (1) | |
Ending balance | 3,548,006 | 3,190,116 | |
Net carrying amount: | |||
Intangible assets | 3,190,116 | 3,190,116 | |
Others [member] | Accumulated depreciation, amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 2,405,697 | 2,306,657 | |
Amortization | 874,810 | 1,086,882 | |
Write-off | (638,815) | (987,841) | |
Disposal of a subsidiary | (93) | ||
Reclassifications | 0 | ||
Exchange effect | (3,972) | (1) | |
Ending balance | 2,637,627 | 2,405,697 | |
Impairment loss | 0 | ||
Net carrying amount: | |||
Intangible assets | $ 2,405,697 | $ 2,405,697 |
Contents of Significant Acco_22
Contents of Significant Accounts - Amortization Amounts of Intangible Assets (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Operating costs [member] | ||
Disclosure of detailed information about intangible assets [line items] | ||
Amortization amounts of intangible assets | $ 827,596 | $ 758,050 |
Operating expenses [member] | ||
Disclosure of detailed information about intangible assets [line items] | ||
Amortization amounts of intangible assets | $ 1,339,014 | $ 1,154,752 |
Contents of Significant Acco_23
Contents of Significant Accounts - Short-Term Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017 |
Disclosure of detailed information about borrowings [line items] | ||||
Short-term loans | $ 12,015,206 | $ 401,712 | $ 13,103,808 | |
Bottom of range [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Interest rates applied | 0.00% | 0.00% | 0.00% | 0.00% |
Top of range [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Interest rates applied | 4.55% | 4.55% | 4.55% | 4.35% |
Unsecured bank loans [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Short-term loans | $ 8,080,200 | $ 7,780,552 | ||
Unsecured other loans [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Short-term loans | $ 3,935,006 | $ 5,323,256 |
Contents of Significant Acco_24
Contents of Significant Accounts - Short-Term Loans - Additional Information (Detail) - TWD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 |
Short term lines of credit [member] | ||
Disclosure of detailed information about borrowings [line items] | ||
Unused short-term lines of credit | $ 64,169 | $ 77,658 |
Contents of Significant Acco_25
Contents of Significant Accounts - Bonds Payable (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | $ 38,781,416 | $ 41,378,182 | |
Less: Current portion | (20,093,825) | (2,499,235) | |
Net | 18,687,591 | $ 624,794 | 38,878,947 |
Discounts on bonds payable [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | (147,877) | (518,150) | |
Unsecured domestic bonds payable [member] | Cost [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | 21,200,000 | 23,700,000 | |
Unsecured convertible bonds payable [member] | Cost [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | $ 17,729,293 | $ 18,196,332 |
Contents of Significant Acco_26
Contents of Significant Accounts - Summary of Terms and Conditions of Bonds (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of detailed information about bonds [Line Items] | ||
Issued amount | $ 38,781,416 | $ 41,378,182 |
Domestic unsecured corporate bonds maturing in June 2019 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In early June 2012 | |
Issued amount | $ 2,500,000 | |
Coupon rate | 1.63% | |
Repayment | Interest was paid annually and the principal was fully repaid in June 2019. | |
Domestic unsecured corporate bonds maturing in March 2018 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year | |
Issuance date | In mid-March 2013 | |
Issued amount | $ 7,500,000 | |
Coupon rate | 1.35% | |
Repayment | Interest was paid annually and the principal was fully repaid in March 2018. | |
Domestic unsecured corporate bonds maturing in March 2020 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In mid-March 2013 | |
Issued amount | $ 2,500,000 | |
Coupon rate | 1.50% | |
Repayment | Interest will be paid annually and the principal will be repayable in March 2020 upon maturity. | |
Domestic unsecured corporate bonds maturing in June 2021 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In mid-June 2014 | |
Issued amount | $ 2,000,000 | |
Coupon rate | 1.70% | |
Repayment | Interest will be paid annually and the principal will be repayable in June 2021 upon maturity. | |
Domestic unsecured corporate bonds maturing in June 2024 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Ten-year | |
Issuance date | In mid-June 2014 | |
Issued amount | $ 3,000,000 | |
Coupon rate | 1.95% | |
Repayment | Interest will be paid annually and the principal will be repayable in June 2024 upon maturity. | |
Domestic unsecured corporate bonds maturing in march 2022 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year | |
Issuance date | In late March 2017 | |
Issued amount | $ 6,200,000 | |
Coupon rate | 1.15% | |
Repayment | Interest will be paid annually and the principal will be repayable in March 2022 upon maturity. | |
Domestic unsecured corporate bonds maturing in march 2024 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In late March 2017 | |
Issued amount | $ 2,100,000 | |
Coupon rate | 1.43% | |
Repayment | Interest will be paid annually and the principal will be repayable in March 2024 upon maturity. | |
Domestic unsecured corporate bonds maturing in october 2022 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year | |
Issuance date | In early October 2017 | |
Issued amount | $ 2,000,000 | |
Coupon rate | 0.94% | |
Repayment | Interest will be paid annually and the principal will be repayable in October 2022 upon maturity. | |
Domestic unsecured corporate bonds maturing in October 2024 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In early October 2017 | |
Issued amount | $ 3,400,000 | |
Coupon rate | 1.13% | |
Repayment | Interest will be paid annually and the principal will be repayable in October 2024 upon maturity. |
Contents of Significant Acco_27
Contents of Significant Accounts - Bonds Payable - Additional Information (Detail) $ / shares in Units, $ in Thousands, shares in Millions | May 18, 2018 | May 18, 2015TWD ($)$ / $$ / shares | Dec. 31, 2019TWD ($)$ / sharesshares | Dec. 31, 2019USD ($)shares | Dec. 31, 2018TWD ($) | May 18, 2015USD ($)$ / $ |
Disclosure of detailed information about bonds [Line Items] | ||||||
Bonds issued amount | $ 38,781,416 | $ 41,378,182 | ||||
Convertible bonds | $ 15,000,000 | |||||
Convertible bonds converted into shares | shares | 33 | 33 | ||||
Currency linked zero coupon convertible bonds maturing on May 18, 2020 [member] | ||||||
Disclosure of detailed information about bonds [Line Items] | ||||||
Bonds issued amount | $ 600,000,000 | |||||
Per annum interest rate related to early redemption of bonds | (0.25%) | |||||
Early Redemption Price, fixed exchange rate | $ / $ | 30.708 | 30.708 | ||||
Percentage of principal amount, bond will be redeemable for early redemption | 99.25% | |||||
Conversion price per share | $ / shares | $ 17.50 | $ 14.2179 | ||||
Percentage of principal amount to redeem bonds on maturity date | 98.76% | |||||
Value of the conversion right of the convertible bonds determined at issuance | $ 1,894,000 | |||||
Convertible bonds, issuance costs | $ 9,000 | |||||
Effective interest rate on the liability component of the convertible bonds | 2.03% | |||||
Currency linked zero coupon convertible bonds maturing on May 18, 2020 [member] | Bottom of range [member] | ||||||
Disclosure of detailed information about bonds [Line Items] | ||||||
Minimum holding period before issuer may redeem bonds | 3 years | |||||
Percentage of closing stock price to conversion price for early redemption of bonds | 125.00% | |||||
Percentage of principal amount that has already been converted, redeemed or repurchased and cancelled, where issuer may redeem the bonds | 90.00% |
Contents of Significant Acco_28
Contents of Significant Accounts - Details of Long-term Loans (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017 | |
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 33,902,074 | $ 30,826,215 | ||
Less: Administrative expenses from syndicated loans | 0 | (1,842) | ||
Less: Current portion | (4,701,775) | (2,622,161) | ||
Total | 29,200,299 | $ 976,272 | 28,204,054 | |
Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 33,902,074 | $ 30,828,057 | ||
Bottom of range [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Interest rates applied | 0.55% | 0.55% | 0.99% | 0.99% |
Top of range [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Interest rates applied | 5.56% | 5.56% | 5.56% | 4.66% |
Secured long-term loan from mega international commercial bank (1) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective July 3, 2017 to July 5, 2021. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. | |||
Secured long-term loan from mega international commercial bank (1) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 3,827 | $ 6,013 | ||
Secured long-term loan from mega international commercial bank (2) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective October 24, 2019 to October 24, 2024. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. | |||
Secured long-term loan from mega international commercial bank (2) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 10,380 | 0 | ||
Secured long-term loan from Taiwan cooperative bank (1) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective August 10, 2015 to August 10, 2020. Interest-only payment for the first year. Principal is repaid in 17 quarterly payments with monthly interest payments. | |||
Secured long-term loan from Taiwan cooperative bank (1) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 1,288 | 3,006 | ||
Secured long-term loan from Taiwan cooperative bank (2) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective October 19, 2015 to October 19, 2025. Interest-only payment for the first year. Principal is repaid in 37 quarterly payments with monthly interest payments. | |||
Secured long-term loan from Taiwan cooperative bank (2) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 71,351 | 83,243 | ||
Secured long-term loan from Taiwan cooperative bank (3) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable monthly from May 31, 2019 to May 31, 2023 with monthly interest payments. | |||
Secured long-term loan from Taiwan cooperative bank (3) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 29,896 | 0 | ||
Unsecured long-term loan from bank of Taiwan [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable quarterly from March 23, 2019 to December 23, 2021 with monthly interest payments. | |||
Unsecured long-term loan from bank of Taiwan [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 0 | 1,000,000 | ||
Unsecured syndicated loans from bank of Taiwan and 7 others [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable semi-annually from February 6, 2017 to February 6, 2020 with monthly interest payments. | |||
Unsecured syndicated loans from bank of Taiwan and 7 others [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 0 | 747,900 | ||
Unsecured long-term loan from CTBC bank [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective January 10, 2019 to September 30, 2021. Interest-only payment for the first and nine months. Principal is repaid in full at the end of the term with monthly interest payments. | |||
Unsecured long-term loan from CTBC bank [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 747,900 | 0 | ||
Secured syndicated loans from China development bank and 6 others [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Effective October 20, 2016 to October 20, 2024. Interest-only payment for the first and the second year. Principal is repaid in 13 semi-annual payments with semi-annual interest payments. | |||
Secured syndicated loans from China development bank and 6 others [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 26,892,457 | 28,987,895 | ||
Unsecured Long-Term Loan from ICBC Bank [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable semi-annually from March 10, 2020 to September 9, 2021 with quarterly interest payments. | |||
Unsecured Long-Term Loan from ICBC Bank [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 1,744,975 | 0 | ||
Unsecured Revolving Loan from Chang Hwa Commercial Bank (Note B) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable quarterly from January 26, 2021 to October 26, 2022 with monthly interest payments. | |||
Unsecured Revolving Loan from Chang Hwa Commercial Bank (Note B) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 2,400,000 | 0 | ||
Unsecured Revolving Loan from Mega International Commercial Bank (Note A) [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Redemption | Repayable semi-annually from October 16, 2020 to April 16, 2022 with monthly interest payments. | |||
Unsecured Revolving Loan from Mega International Commercial Bank (Note A) [member] | Cost [member] | ||||
Disclosure of detailed information about borrowings [line items] | ||||
Long-term loans | $ 2,000,000 | $ 0 |
Contents of Significant Acco_29
Contents of Significant Accounts - Long-Term Loans - Additional Information (Detail) | Nov. 02, 2016TWD ($) | Oct. 17, 2016TWD ($) | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2018USD ($) |
Unsecured syndicated loans from bank of Taiwan and 7 others [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | $ 748,000,000 | $ 748,000,000 | ||||
Unsecured syndicated loans from bank of Taiwan and 7 others [member] | Top of range [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 2,448,000,000 | 2,448,000,000 | ||||
Secured syndicated loans from China development bank [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 13,696,000,000 | 14,766,000,000 | ||||
Secured syndicated loans from China development bank [member] | HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 3,914,000,000 | 4,219,000,000 | ||||
Secured syndicated loans from China development bank [member] | Top of range [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | $ 464,000,000 | $ 503,000,000 | ||||
Secured syndicated loans from China development bank [member] | Top of range [member] | HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 8,832,000,000 | 9,021,000,000 | ||||
Mega International Commercial Bank [Member] | Unsecured Revolving Loan [Member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Debt maturity period | 5 year | |||||
Debt maximum borrowing capacity | $ 3,000,000,000 | |||||
Unused line of credit | 500,000,000 | 3,000,000,000 | ||||
Chang Hwa Commercial Bank [member] | Unsecured Revolving Loan [Member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Debt maturity period | 5 year | |||||
Debt maximum borrowing capacity | $ 3,000,000,000 | |||||
Unused line of credit | $ 600,000,000 | $ 3,000,000,000 |
Contents of Significant Acco_30
Contents of Significant Accounts - Post-Employment Benefits - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Disclosure of defined benefit plans and defined contribution plans [Line Items] | |||
Actual returns on plan assets | $ 55 | $ 59 | |
Expected pension fund contribution in 2020 | $ 93 | ||
Weighted-average durations of defined benefit obligation | 9 years | 10 years | |
Defined benefit plan [member] | |||
Disclosure of defined benefit plans and defined contribution plans [Line Items] | |||
Percentages of employees' total monthly salaries and wages to pension fund | 2.00% | 2.00% | 2.00% |
Pension expenses | $ 59 | $ 69 | $ 80 |
Defined contribution plan [member] | |||
Disclosure of defined benefit plans and defined contribution plans [Line Items] | |||
Minimum percentage of employees' monthly salary or wages as monthly contributions to defined contribution plan | 6.00% | 6.00% | 6.00% |
Pension expenses | $ 1,369 | $ 1,339 | $ 1,256 |
Contents of Significant Acco_31
Contents of Significant Accounts - Movements in Present Value of Defined Benefit Obligation and Fair Value of Plan Assets (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Present value of defined benefit obligation [member] | ||
Disclosure of net defined benefit liability (asset) [line items] | ||
Beginning balance | $ (5,620,509) | $ (5,671,058) |
Service cost | (21,043) | (24,477) |
Interest income (cost) | (51,146) | (61,247) |
Subtotal | (72,189) | (85,724) |
Arising from changes in financial assumptions | (114,976) | (91,350) |
Experience adjustments | 180,095 | (5,907) |
Subtotal | 65,119 | (97,257) |
Benefits paid | 216,510 | 233,530 |
Ending balance | (5,411,069) | (5,620,509) |
Plan assets [member] | ||
Disclosure of net defined benefit liability (asset) [line items] | ||
Beginning balance | 1,453,335 | 1,532,539 |
Interest income (cost) | 13,225 | 16,552 |
Contribution by employer | 94,362 | 95,577 |
Benefits paid | (216,510) | (233,530) |
Return on plan assets, excluding amounts included in interest income | 41,284 | 42,197 |
Ending balance | $ 1,385,696 | $ 1,453,335 |
Contents of Significant Acco_32
Contents of Significant Accounts - Defined Benefit Plan Recognized on the Consolidated Balance Sheets (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of defined benefit plans [abstract] | |||
Present value of the defined benefit obligation | $ (5,411,069) | $ (5,620,509) | |
Fair value of plan assets | 1,385,696 | 1,453,335 | |
Funded status | (4,025,373) | (4,167,174) | |
Net defined benefit liabilities, noncurrent recognized on the consolidated balance sheets | $ (4,025,373) | $ (134,583) | $ (4,167,174) |
Contents of Significant Acco_33
Contents of Significant Accounts - Major Categories of Plan Assets as a Percentage of Fair Value of the Total Plan Assets (Detail) | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of fair value of plan assets [abstract] | ||
Cash | 21.00% | 17.00% |
Equity instruments | 45.00% | 51.00% |
Debt instruments | 24.00% | 24.00% |
Others | 10.00% | 8.00% |
Contents of Significant Acco_34
Contents of Significant Accounts - Principal Underlying Actuarial Assumptions (Detail) | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of defined benefit plans [abstract] | ||
Discount rate | 0.67% | 0.91% |
Rate of future salary increase | 3.50% | 3.50% |
Contents of Significant Acco_35
Contents of Significant Accounts - Expected Future Benefit Payments (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2019TWD ($) | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | $ 5,751,327 |
Not later than one year [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 230,468 |
Later than one year and not later than two years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 252,969 |
Later than two years and not later than three years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 298,483 |
Later than three years and not later than four years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 328,958 |
Later than four years and not later than five years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 377,022 |
Later than five years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | $ 4,263,427 |
Contents of Significant Acco_36
Contents of Significant Accounts - Sensitivity Analysis (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Discount rate [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Decrease (increase) in defined benefit obligation due to 0.5% increase in actuarial assumptions | $ 235,666 | $ 262,909 |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Decrease (increase) in defined benefit obligation due to 0.5% decrease in actuarial assumptions | $ (251,131) | $ (281,037) |
Rate of future salary increase [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Decrease (increase) in defined benefit obligation due to 0.5% increase in actuarial assumptions | $ (215,694) | $ (244,120) |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Decrease (increase) in defined benefit obligation due to 0.5% decrease in actuarial assumptions | $ 205,388 | $ 231,751 |
Contents of Significant Acco_37
Contents of Significant Accounts - Deferred Government Grants (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2019TWD ($) | Dec. 31, 2018TWD ($) | |
Miscellaneous liabilities [abstract] | ||||||
Beginning balance | $ 17,480,904 | $ 14,595,546 | ||||
Arising during the period | 617,685 | $ 20,651 | 7,129,770 | $ 6,755,920 | ||
Other operating income | (4,062,148) | $ (135,812) | (3,885,722) | (1,469,616) | ||
Exchange effect | (484,888) | (358,690) | ||||
Ending balance | 13,551,553 | 17,480,904 | 14,595,546 | |||
Current | $ 3,780,579 | $ 3,832,124 | ||||
Noncurrent | 9,770,974 | 13,648,780 | ||||
Total | $ 13,551,553 | $ 17,480,904 | $ 14,595,546 | $ 13,551,553 | $ 17,480,904 |
Contents of Significant Acco_38
Contents of Significant Accounts - Equity - Summary of Refund Liabilities (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of refund liability [abstract] | ||
Refund liabilities | $ 2,078,075 | $ 1,213,476 |
Contents of Significant Acco_39
Contents of Significant Accounts - Equity - Additional Information (Detail) - $ / shares | Jun. 28, 2019 | Mar. 11, 2019 | Aug. 27, 2018 | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of classes of share capital [line items] | |||||
Shares authorized | 26,000,000,000 | 26,000,000,000 | |||
Shares issued | 11,724,319,000 | 12,424,319,000 | |||
Shares par value | $ 10 | $ 10 | |||
Number of common shares represented by 1 ADS | 5 | ||||
Treasury stock cancelled | 400,000,000 | 300,000,000 | 200,000,000 | ||
Maximum percentage of total shares of treasury stock on issued stock as per Securities and Exchange Law of the R.O.C | 10.00% | ||||
Closing prices of UMC's stock | $ 16.45 | 11.25 | |||
Percentage of legal reserve | 10.00% | ||||
Cash dividends | $ 0.75 | $ 0.58989396 | |||
HSUN CHIEH INVESTMENT CO., LTD. [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Number of shares in entity held by its subsidiaries or associates | 441,000,000 | 441,000,000 | |||
YANN YUAN INVESTMENT CO., LTD. [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Number of shares in entity held by its subsidiaries or associates | 200,000,000 | 172,000,000 | |||
FORTUNE VENTURE CAPITAL CORP. (FORTUNE) [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Number of shares in entity held by its subsidiaries or associates | 16,000,000 | 16,000,000 | |||
American depositary shares [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Number of American Depositary Shares traded on NYSE | 138,000,000 | 143,000,000 | |||
Number of common shares represented by issued American Depositary Shares | 692,000,000 | 717,000,000 | |||
Bottom of range [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Percentage of cash dividend on dividend distribution | 20.00% | ||||
Percentage of stock dividend on dividend distribution | 0.00% | ||||
Top of range [member] | |||||
Disclosure of classes of share capital [line items] | |||||
Percentage of cash dividend on dividend distribution | 100.00% | ||||
Percentage of stock dividend on dividend distribution | 80.00% |
Contents of Significant Acco_40
Contents of Significant Accounts - Purpose for Repurchase and Changes in Treasury Stock (Detail) - shares shares in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of classes of share capital [line items] | ||
Beginning balance | 480,000 | 400,000 |
Increase | 220,000 | 480,000 |
Decrease | 700,000 | 400,000 |
Ending balance | 0 | 480,000 |
Transfer to employees [member] | ||
Disclosure of classes of share capital [line items] | ||
Beginning balance | 200,000 | 400,000 |
Increase | 0 | 0 |
Decrease | 200,000 | 200,000 |
Ending balance | 0 | 200,000 |
Maintain credit and stockholders' rights and interests [member] | ||
Disclosure of classes of share capital [line items] | ||
Beginning balance | 280,000 | 0 |
Increase | 220,000 | 480,000 |
Decrease | 500,000 | 200,000 |
Ending balance | 0 | 280,000 |
Contents of Significant Acco_41
Contents of Significant Accounts - Details of Distribution (Detail) - TWD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Disclosure of equity [Line Items] | |||
Appropriation of earnings | $ 0 | $ 0 | $ 0 |
Appropriation of earnings, Cash dividends | $ 6,916,105 | $ 8,557,023 | $ 6,112,159 |
Cash dividends | $ 0.75 | $ 0.58989396 | |
Legal Reserve [Member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings | $ 963,947 | $ 707,299 | |
Special Reserve [member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings | 0 | ||
Appropriation of earnings | (3,491,626) | 14,513,940 | |
Appropriation of earnings, Cash dividends | 0 | ||
Cash dividends [member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings, Cash dividends | $ 9,765,155 | $ 6,916,105 |
Contents of Significant Acco_42
Contents of Significant Accounts - Non-controlling Interests (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Equity [abstract] | ||||
Beginning balance | $ 466,768 | $ 956,808 | $ 2,161,729 | |
Impact of retroactive applications of IFRS 15 | 0 | 1,597 | 0 | |
Adjusted beginning balance | 466,768 | 958,405 | 2,161,729 | |
Net loss | (3,578,847) | $ (119,654) | (4,429,938) | (2,997,469) |
Other comprehensive income (loss) | (15,213) | (103,894) | (111,601) | |
Changes in subsidiaries' ownership | 24,740 | (278,613) | (999,151) | |
Disposal of a subsidiary | 0 | (7,074) | 0 | |
Derecognition of the non-controlling interests | 3,512,617 | 4,327,882 | 2,903,300 | |
Ending balance | $ 410,065 | $ 13,709 | $ 466,768 | $ 956,808 |
Contents of Significant Acco_43
Contents of Significant Accounts - Share-Based Payment - Additional Information (Detail) - TWD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
Number of treasury shares to employees | shares | 200 | |
Grant date quoted market price per share | $ / shares | $ 16.95 | |
Compensation expenses | $ | $ 366 | $ 696 |
Bottom of range [member] | ||
Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
Vesting period | 1 year | |
Top of range [member] | ||
Disclosure of terms and conditions of share-based payment arrangement [line items] | ||
Vesting period | 2 years |
Contents of Significant Acco_44
Contents of Significant Accounts - Operating Revenues (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Revenue [abstract] | ||||
Sale of goods | $ 142,957,544 | |||
Royalty | 6,817 | |||
Mask tooling | 3,334,844 | |||
Others | 2,985,501 | |||
Operating revenues | $ 148,201,641 | $ 4,954,919 | $ 151,252,571 | $ 149,284,706 |
Contents of Significant Acco_45
Contents of Significant Accounts - Summary of Disaggregation of Revenue by Geography (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | $ 148,201,641 | $ 4,954,919 | $ 151,252,571 | $ 149,284,706 |
Taiwan [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 48,952,219 | |||
Singapore [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 30,798,270 | |||
China (includes Hong Kong) [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 18,971,866 | |||
Japan [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 4,694,277 | |||
USA [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 18,208,227 | |||
Europe [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | 14,329,730 | |||
Others [member] | ||||
Disclosure of Geographical Areas [Line Items] | ||||
Operating revenues | $ 13,330,117 |
Contents of Significant Acco_46
Contents of Significant Accounts - Summary of Disaggregation of Revenue by Product (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure Of Products [Line Items] | ||
Revenue from contracts with customers | $ 148,201,641 | $ 151,252,571 |
Wafer [member] | ||
Disclosure Of Products [Line Items] | ||
Revenue from contracts with customers | 142,625,019 | 142,550,304 |
Other products [member] | ||
Disclosure Of Products [Line Items] | ||
Revenue from contracts with customers | $ 5,576,622 | $ 8,702,267 |
Contents of Significant Acco_47
Contents of Significant Accounts - Summary of Disaggregation of Revenue by Operating Segments (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | $ 148,201,641 | $ 151,252,571 |
Taiwan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 53,966,435 | 55,092,681 |
Singapore [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 23,979,343 | 24,820,196 |
China (includes Hong Kong) [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 19,115,188 | 18,504,881 |
Japan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 9,855,772 | 5,896,313 |
USA [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 19,957,615 | 23,555,105 |
Europe [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 6,900,339 | 12,527,894 |
Other Countries [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 14,426,949 | 10,855,501 |
Goods or services transferred at point in time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 147,057,035 | 146,475,989 |
Goods or services transferred at point in time [member] | Taiwan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 53,905,377 | 54,963,771 |
Goods or services transferred at point in time [member] | Singapore [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 23,976,786 | 24,791,908 |
Goods or services transferred at point in time [member] | China (includes Hong Kong) [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 18,987,848 | 14,889,672 |
Goods or services transferred at point in time [member] | Japan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 9,684,186 | 5,889,277 |
Goods or services transferred at point in time [member] | USA [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 19,946,286 | 23,536,756 |
Goods or services transferred at point in time [member] | Europe [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 6,138,812 | 11,551,052 |
Goods or services transferred at point in time [member] | Other Countries [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 14,417,740 | 10,853,553 |
Goods or services transferred over time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 1,144,606 | 4,776,582 |
Goods or services transferred over time [member] | Taiwan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 61,058 | 128,910 |
Goods or services transferred over time [member] | Singapore [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 2,557 | 28,288 |
Goods or services transferred over time [member] | China (includes Hong Kong) [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 127,340 | 3,615,209 |
Goods or services transferred over time [member] | Japan [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 171,586 | 7,036 |
Goods or services transferred over time [member] | USA [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 11,329 | 18,349 |
Goods or services transferred over time [member] | Europe [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 761,527 | 976,842 |
Goods or services transferred over time [member] | Other Countries [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 9,209 | 1,948 |
Wafer fabrication [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 148,123,306 | 151,023,932 |
Wafer fabrication [member] | Goods or services transferred at point in time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 146,978,700 | 146,247,350 |
Wafer fabrication [member] | Goods or services transferred over time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 1,144,606 | 4,776,582 |
New business [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 78,335 | 247,929 |
New business [member] | Goods or services transferred at point in time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 78,335 | 247,929 |
Sub total [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 148,201,641 | 151,271,861 |
Sub total [member] | Goods or services transferred at point in time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | 147,057,035 | 146,495,279 |
Sub total [member] | Goods or services transferred over time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | $ 1,144,606 | 4,776,582 |
Adjustments And Eliminations [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | (19,290) | |
Adjustments And Eliminations [member] | Goods or services transferred at point in time [member] | ||
Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
Revenue from contracts with customers | $ (19,290) |
Contents of Significant Acco_48
Contents of Significant Accounts - Summary of Balances of Contract Assets and Contract Liabilities (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Jan. 01, 2018TWD ($) |
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | $ 214,243 | $ 7,163 | $ 92,210 | $ 129,042 |
Contract liabilities, current | 988,115 | 33,036 | 932,371 | 3,951,414 |
Contract liabilities, noncurrent | 482,080 | $ 16,118 | 0 | 0 |
Contract liabilities | 1,470,195 | 932,371 | 3,951,414 | |
Sales of Goods and Services [member] | ||||
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | 599,491 | 486,184 | 129,042 | |
Contract liabilities | 1,470,195 | 932,371 | 3,951,414 | |
Loss allowance [member] | ||||
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | $ (385,248) | $ (393,974) | $ 0 |
Contents of Significant Acco_49
Contents of Significant Accounts - Operating Revenues - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of additional information about revenue [Abstract] | ||
Revenue that was included in contract liability balance at beginning of period | $ 616 | $ 3,815 |
Transaction price allocated to unsatisfied performance obligations | 2,987 | 3,148 |
Asset recognized from the cost to fulfill a contract with customer | $ 560 | $ 567 |
Contents of Significant Acco_50
Contents of Significant Accounts - Operating Costs and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | $ 24,822,224 | $ 25,474,238 | $ 23,722,047 | |
Labor and health insurance | 1,306,608 | 1,259,227 | 1,255,099 | |
Pension | 1,428,158 | 1,407,741 | 1,335,575 | |
Other employee benefit expenses | 427,989 | 401,129 | 378,123 | |
Depreciation | 46,910,627 | 49,776,307 | 50,824,667 | |
Amortization | 2,216,654 | $ 74,111 | 2,100,130 | 2,133,726 |
Operating costs [member] | ||||
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | 17,109,432 | 17,694,175 | 16,676,560 | |
Labor and health insurance | 911,037 | 882,671 | 878,576 | |
Pension | 1,066,877 | 1,065,176 | 1,008,121 | |
Other employee benefit expenses | 303,358 | 289,395 | 259,701 | |
Depreciation | 45,068,673 | 47,086,993 | 47,820,812 | |
Amortization | 848,214 | 880,967 | 911,563 | |
Operating expenses [member] | ||||
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | 7,712,792 | 7,780,063 | 7,045,487 | |
Labor and health insurance | 395,571 | 376,556 | 376,523 | |
Pension | 361,281 | 342,565 | 327,454 | |
Other employee benefit expenses | 124,631 | 111,734 | 118,422 | |
Depreciation | 1,841,954 | 2,689,314 | 3,003,855 | |
Amortization | $ 1,368,440 | $ 1,219,163 | $ 1,222,163 |
Contents of Significant Acco_51
Contents of Significant Accounts - Operating Costs and Expenses - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2019 | |
Bottom of range [member] | |
Disclosure Of Operating Costs And Expenses [Line Items] | |
Allocated profit percentage for employees' compensation | 5.00% |
Top of range [member] | |
Disclosure Of Operating Costs And Expenses [Line Items] | |
Allocated profit percentage for directors' compensation | 0.10% |
Contents of Significant Acco_52
Contents of Significant Accounts - Details of Distribution of Employees' Compensation and Directors' Compensation (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Analysis of income and expense [abstract] | |||
Employees' compensation - Cash | $ 1,132,952 | $ 1,400,835 | $ 1,032,324 |
Directors' compensation | $ 10,259 | $ 7,624 | $ 11,452 |
Contents of Significant Acco_53
Contents of Significant Accounts - Net Other Operating Income and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Analysis of income and expense [abstract] | ||||
Rental income from property | $ 200,351 | $ 199,505 | $ 160,119 | |
Gain on disposal of property, plant and equipment | 43,036 | $ 1,439 | 136,743 | 82,397 |
Government grants | 5,366,907 | 5,220,746 | 1,710,176 | |
Impairment loss | ||||
Property, plant and equipment | (84,974) | 0 | 0 | |
Goodwill | (7,398) | |||
Others | (335,760) | (440,110) | (298,997) | |
Total | $ 5,182,162 | $ 173,258 | $ 5,116,884 | $ 1,653,695 |
Contents of Significant Acco_54
Contents of Significant Accounts - Non-Operating Income and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of detailed information about financial instruments [line items] | ||||
Gain (loss) on valuation of financial assets and liabilities at fair value through profit or loss | $ 1,279,931 | $ (1,167,735) | $ 598,270 | |
Impairment loss | (118,134) | (46,225) | (950,335) | |
Gain (loss) on disposal of investments | (16,293) | $ (545) | (19,286) | 1,269,369 |
Others | (71,147) | 104,956 | 76,788 | |
Total other gains and losses | 1,166,729 | 39,008 | (1,128,290) | 994,092 |
Interest expenses, bonds payable | 672,902 | 710,663 | 763,124 | |
Interest expenses, bank loans | 1,808,633 | 1,782,544 | 1,563,590 | |
Interest expenses,lease liabilities | 178,112 | 0 | 0 | |
Interest expenses, others | 274,168 | 275,465 | 80,158 | |
Financial expenses | 63,828 | 82,553 | 88,290 | |
Total finance costs | 2,997,643 | $ 100,222 | 2,851,225 | 2,495,162 |
Available-for-sale financial assets [member] | ||||
Disclosure of detailed information about financial instruments [line items] | ||||
Impairment loss | 0 | 0 | (664,948) | |
Financial assets measured at cost [member] | ||||
Disclosure of detailed information about financial instruments [line items] | ||||
Impairment loss | 0 | 0 | (285,387) | |
Investments accounted for under the equity method [Member] | ||||
Disclosure of detailed information about financial instruments [line items] | ||||
Impairment loss | $ (25,762) | $ (46,225) | $ 0 |
Contents of Significant Acco_55
Contents of Significant Accounts - Components of Other Comprehensive Income (Loss) (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Statement of changes in equity [abstract] | ||||
Remeasurements of defined benefit pension plans , Arising during the period | $ 106,403 | $ 3,557 | $ (55,060) | $ (184,186) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income | 5,486,209 | 183,424 | 1,454,018 | 0 |
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss, Arising during the period | 0 | 0 | (2,572) | 0 |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Arising during the period | 899,025 | 30,058 | (103,319) | 1,221 |
Exchange differences on translation of foreign operations, Arising during the period | (3,292,023) | (47,417) | (5,975,203) | |
Unrealized gains or losses on available-for-sale financial assets, Arising during the period | 1,224,344 | |||
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Arising during the period | 8,799 | (11,069) | 604,675 | |
Total other comprehensive income (loss), Arising during the period | 3,208,413 | 1,234,581 | (4,329,149) | |
Exchange differences on translation of foreign operations, Reclassification adjustments during the period | 14,085 | 408 | 0 | |
Unrealized gains or losses on available-for-sale financial assets, Reclassification adjustments during the period | (642,905) | |||
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Reclassification adjustments during the period | 6,594 | (12,897) | 102,302 | |
Total other comprehensive income (loss), Reclassification adjustments during the period | 20,679 | (12,489) | (540,603) | |
Remeasurements of defined benefit pension plans, Before tax | 106,403 | 3,557 | (55,060) | (184,186) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Before tax | 5,486,209 | 183,424 | 1,454,018 | 0 |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Before tax | 899,025 | 30,058 | (103,319) | 1,221 |
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss, Before tax | 0 | 0 | (2,572) | 0 |
Exchange differences on translation of foreign operations, Before tax | (3,277,938) | (109,593) | (47,009) | (5,975,203) |
Unrealized gains or losses on available-for-sale financial assets, Before tax | 0 | 0 | 0 | 581,439 |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Before tax | 15,393 | 515 | (23,966) | 706,977 |
Total other comprehensive income (loss), Before tax | 3,229,092 | 1,222,092 | (4,869,752) | |
Remeasurements of defined benefit pension plans, Income tax effect | (21,281) | 32,647 | 31,311 | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Income tax effect | (394,695) | (419,198) | ||
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss, Income tax effect | 0 | 514 | 0 | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Income tax effect | (41,643) | 27,741 | 0 | |
Exchange differences on translation of foreign operations, Income tax effect | 14,949 | (28,845) | 59,838 | |
Unrealized gains or losses on available-for-sale financial assets,Income tax effect | 0 | 0 | 100,059 | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Income tax effect | (8,843) | 659 | (135,989) | |
Total other comprehensive income (loss), Income tax effect | (451,513) | (386,482) | 55,219 | |
Remeasurements of defined benefit pension plans, Net of tax | 85,122 | (22,413) | (152,875) | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Net of tax | 5,091,514 | 1,034,820 | ||
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss, Net of tax | (2,058) | |||
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Net of tax | 857,382 | (75,578) | 1,221 | |
Exchange differences on translation of foreign operations, Net of tax | (3,262,989) | (75,854) | (5,915,365) | |
Unrealized gains or losses on available-for-sale financial assets, Net of tax | 681,498 | |||
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Net of tax | 6,550 | (23,307) | 570,988 | |
Total other comprehensive income (loss), net of tax | $ 2,777,579 | $ 92,865 | $ 835,610 | $ (4,814,533) |
Contents of Significant Acco_56
Contents of Significant Accounts - Major Components of Income Tax Expense (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Current income tax expense (benefit): | ||||
Current income tax charge | $ 772,795 | $ (264,909) | $ 2,467,004 | |
Adjustments in respect of current income tax of prior periods | (1,033,780) | (899,219) | (364,951) | |
Deferred income tax expense (benefit): | ||||
Deferred income tax related to origination and reversal of temporary differences | 465,530 | 1,350,028 | (1,033,142) | |
Deferred income tax related to recognition and derecognition of tax losses and unused tax credits | 231,971 | (335,367) | (424,608) | |
Deferred income tax related to changes in tax rates | 0 | (842,123) | 12,477 | |
Adjustment of prior year's deferred income tax | 121,189 | (2,744) | 9,233 | |
Deferred income tax arising from write-down or reversal of write-down of deferred tax assets | (327,359) | (135,543) | 326,468 | |
Income tax expense (benefit) recorded in profit or loss | 230,346 | $ 7,701 | (1,129,877) | 992,481 |
Income tax related to components of other comprehensive income (loss), Items that will not be reclassified subsequently to profit or loss | ||||
Remeasurements of defined benefit pension plans | (21,281) | 11,012 | 31,311 | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income | (394,695) | (24,969) | 0 | |
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss | 0 | 514 | 0 | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss | (41,643) | 18,045 | 0 | |
Deferred income tax related to changes in tax rates | 0 | (362,898) | 0 | |
Income tax related to items that will not be reclassified subsequently to profit or loss | (457,619) | (15,300) | (358,296) | 31,311 |
Income tax related to components of other comprehensive income (loss), Items that may be reclassified subsequently to profit or loss | ||||
Exchange differences on translation of foreign operations | 14,949 | (24,339) | 59,838 | |
Unrealized gains or losses on available-for-sale financial assets | 0 | 0 | 100,059 | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss | (8,843) | 1,847 | (135,989) | |
Deferred income tax related to changes in tax rates | 0 | (5,694) | 0 | |
Income tax related to items that may be reclassified subsequently to profit or loss | 6,106 | $ 204 | (28,186) | 23,908 |
Deferred income tax recognized directly to equity | ||||
Adjustments of changes in net assets of associates and joint ventures accounted for using equity method | (532) | (414) | 227 | |
Reversal of temporary difference arising from initial recognition of the equity component of the compound financial instrument | (45) | |||
Gains or losses on hedging instruments which will not be reclassified subsequently to profit or loss | (514) | |||
Deferred income tax related to changes in tax rates | 0 | (57,140) | 0 | |
Income tax recognized directly to equity | $ (1,091) | $ (57,554) | $ 227 |
Contents of Significant Acco_57
Contents of Significant Accounts - Reconciliation Between Income Tax Expense and Income Before Tax At UMC's Applicable Tax Rate (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] | ||||
Income before tax | $ 4,806,596 | $ 160,702 | $ 2,117,920 | $ 7,671,710 |
At UMC's statutory income tax rate | 961,319 | 423,584 | 1,304,191 | |
Adjustments in respect of current income tax of prior periods | (1,033,780) | (899,219) | (364,951) | |
Net changes in loss carry-forward and investment tax credits | 2,387,922 | 2,239,058 | 564,742 | |
Adjustment of deferred tax assets/liabilities for write-downs/reversals and different jurisdictional tax rates | (169,568) | 49,625 | 330,228 | |
Tax effect of non-taxableincome and non-deductibleexpenses: | ||||
Tax exempt income | (1,778,820) | (451,589) | (1,549,018) | |
Investment gain | (270,610) | (886,546) | (639,979) | |
Dividend income | (139,093) | (112,810) | (83,154) | |
Others | 110,991 | 140,278 | 259,590 | |
Basic tax | 3,215 | 0 | 33,207 | |
Estimated income tax on unappropriated earnings | 150,401 | (849,328) | 38,069 | |
Deferred income tax related to changes in tax rates | 0 | (842,123) | 12,477 | |
Effect of different tax rates applicable to UMC and its subsidiaries | (102,608) | (118,404) | (21,615) | |
Taxes withheld in other jurisdictions | 19,749 | 48,291 | 868,106 | |
Others | 91,228 | 129,306 | 240,588 | |
Income tax expense (benefit) recorded in profit or loses | $ 230,346 | $ 7,701 | $ (1,129,877) | $ 992,481 |
Contents of Significant Acco_58
Contents of Significant Accounts - Significant Components of Deferred Income Tax Assets and Liabilities (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) |
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | $ 7,563,357 | $ 252,871 | $ 6,795,796 | |
Deferred income tax liabilities | (2,221,230) | $ (74,264) | (1,979,509) | |
Net deferred income tax assets | 5,342,127 | 4,816,287 | $ 3,788,906 | |
Depreciation [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 1,658,688 | 1,930,388 | ||
Deferred income tax liabilities | (550,772) | (440,524) | ||
Loss carry-forward [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 1,310,300 | 502,331 | ||
Defined benefit plan [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 800,734 | 825,792 | ||
Refund liabilities [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 339,185 | 232,854 | ||
Allowance for inventory valuation losses [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 628,725 | 416,270 | ||
Investment loss [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 486,537 | 748,983 | ||
Unrealized profit on intercompany sales [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 1,568,645 | 1,703,942 | ||
Investment tax credits [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 0 | 336,869 | ||
Others [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 770,543 | 98,367 | ||
Deferred income tax liabilities | (11,793) | (7,768) | ||
Unrealized exchange gain (losses) [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | (565,175) | (535,595) | ||
Investment gain [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | (702,547) | (513,322) | ||
Convertible bond option [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | (69,484) | (139,693) | ||
Amortizable assets [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | $ (321,459) | $ (342,607) |
Contents of Significant Acco_59
Contents of Significant Accounts - Movement of Deferred Tax (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Changes in deferred tax assets and liabilities [Line Items] | |||
Beginning Balance | $ 4,816,287 | $ 3,788,906 | |
Acquisition from business combinations | 1,542,895 | ||
Amounts recognized in profit or loss during the period | (491,331) | (34,251) | |
Amounts recognized in other comprehensive income | (451,513) | (386,482) | $ 55,219 |
Amounts recognized in equity | (1,091) | (57,554) | 227 |
Exchange adjustments | (73,213) | (9,570) | |
Ending Balance | 5,342,127 | 4,816,287 | 3,788,906 |
Increase (decrease) due to changes in accounting policy [member] | |||
Changes in deferred tax assets and liabilities [Line Items] | |||
Beginning Balance | 93 | 1,515,238 | |
Ending Balance | 93 | 1,515,238 | |
Adjusted balance at January 1 after the impact of retroactive applications [member] | |||
Changes in deferred tax assets and liabilities [Line Items] | |||
Beginning Balance | $ 4,816,380 | 5,304,144 | |
Ending Balance | $ 4,816,380 | $ 5,304,144 |
Contents of Significant Acco_60
Contents of Significant Accounts - Unused Tax Loss Carry-forward for Which No Deferred Income Tax Assets have been Recognized (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Unused tax loss carry-forward for which no deferred income tax assets have been recognized | $ 48,296,329 | $ 37,876,957 |
1-5 years [member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Unused tax loss carry-forward for which no deferred income tax assets have been recognized | 38,708,327 | 27,072,604 |
6-10 years [member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Unused tax loss carry-forward for which no deferred income tax assets have been recognized | 9,588,002 | 10,799,310 |
more than 10 years [member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Unused tax loss carry-forward for which no deferred income tax assets have been recognized | $ 0 | $ 5,043 |
Contents of Significant Acco_61
Contents of Significant Accounts - Income Tax - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] | |||
Deductible temporary differences for which no deferred income tax assets have been recognized | $ 2,770 | $ 5,971 | |
Taxable temporary differences of unrecognized deferred tax liabilities associated with investments in subsidiaries | $ 11,389 | $ 11,036 | |
Corporate income tax rate | 20.00% | 20.00% | 17.00% |
Undistributed earnings tax | 5.00% | 5.00% | 10.00% |
Contents of Significant Acco_62
Contents of Significant Accounts - Earnings Per Share (Detail) $ / shares in Units, $ / shares in Units, shares in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($)$ / sharesshares | Dec. 31, 2019USD ($)$ / sharesshares | Dec. 31, 2018TWD ($)$ / sharesshares | Dec. 31, 2017TWD ($)$ / sharesshares | |
Earnings per share-basic | ||||
Net income attributable to the parent company | $ 8,155,097 | $ 272,655 | $ 7,677,735 | $ 9,676,698 |
Weighted-average number of ordinary shares for basic earnings per share (thousand shares) | 11,565,068 | 11,565,068 | 11,889,723 | 11,994,760 |
Earnings per share-basic (NTD) | (per share) | $ 0.71 | $ 0.02 | $ 0.65 | $ 0.81 |
Earnings per share-diluted | ||||
Net income attributable to the parent company | $ 8,155,097 | $ 272,655 | $ 7,677,735 | $ 9,676,698 |
Effect of dilution | ||||
Unsecured convertible bonds | $ | 289,121 | 283,349 | 288,091 | |
Income attributable to stockholders of the parent | $ | $ 8,444,218 | $ 7,961,084 | $ 9,964,789 | |
Weighted-average number of ordinary shares for basic earnings per share (thousand shares) | 11,565,068 | 11,565,068 | 11,889,723 | 11,994,760 |
Effect of dilution | ||||
Employees' compensation | 90,047 | 90,047 | 137,511 | 83,981 |
Unsecured convertible bonds | 1,295,729 | 1,295,729 | 1,243,599 | 1,193,935 |
Weighted-average number of common stocks after dilution (thousand shares) | 12,950,844 | 12,950,844 | 13,270,833 | 13,272,676 |
Earnings per share-diluted (NTD) | (per share) | $ 0.65 | $ 0.02 | $ 0.60 | $ 0.75 |
Contents of Significant Acco_63
Contents of Significant Accounts - Reconciliation of Liabilities Arising from Financing Activities (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Short-term borrowings [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | $ 13,103,808 | $ 25,445,540 |
Cash Flows | (993,723) | (12,288,248) |
Non-cash changes,Foreign exchange | (368,507) | (292,466) |
Non-cash changes,Other | 273,628 | 238,982 |
Ending Balance | 12,015,206 | 13,103,808 |
Long-term loans [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 30,826,215 | 32,165,336 |
Cash Flows | 3,876,991 | (1,880,197) |
Non-cash changes,Foreign exchange | (802,975) | 556,777 |
Non-cash changes,Other | 1,843 | (15,701) |
Ending Balance | 33,902,074 | 30,826,215 |
Bonds payable [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 41,378,182 | 48,517,631 |
Cash Flows | (2,500,000) | (7,500,000) |
Non-cash changes,Foreign exchange | 0 | 0 |
Non-cash changes,Other | (96,766) | 360,551 |
Ending Balance | 38,781,416 | 41,378,182 |
Guarantee deposits [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 665,793 | 564,576 |
Cash Flows | 252,269 | 88,131 |
Non-cash changes,Foreign exchange | (2,021) | 13,086 |
Non-cash changes,Other | (619,347) | 0 |
Ending Balance | 296,694 | 665,793 |
Lease liabilities [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 6,006,457 | |
Cash Flows | (633,488) | |
Non-cash changes,Foreign exchange | (78,432) | |
Non-cash changes,Other | 736,488 | |
Ending Balance | 6,031,025 | 6,006,457 |
Other financial liabilities - noncurrent [member] | ||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||
Beginning balance | 20,410,355 | 20,486,119 |
Cash Flows | 0 | 0 |
Non-cash changes,Foreign exchange | (698,127) | (456,551) |
Non-cash changes,Other | 381,213 | 380,787 |
Ending Balance | $ 20,093,441 | $ 20,410,355 |
Contents of Significant Acco_64
Contents of Significant Accounts - Summary Of Detailed Information About Business Combination (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of detailed information about business combination [abstract] | ||||
Net cash acquired from the subsidiary | $ 14,430 | |||
Net cash outflows from acquisition | $ 12,800,981 | $ 427,983 | 0 | $ 0 |
Liabilities | ||||
Bargain purchase gain | (171,585) | $ (5,736) | $ 0 | $ 0 |
UNITED SEMICONDUCTOR JAPAN CO LTD [Member] | ||||
Disclosure of detailed information about business combination [abstract] | ||||
Cash | 15,711,370 | |||
Fair value of previously held equity interest immediately before acquisition | 2,303,988 | |||
Gains or losses on hedging instruments | 2,572 | |||
Consideration transferred | 18,017,930 | |||
Cash Consideration | 15,711,370 | |||
Net cash acquired from the subsidiary | (2,910,389) | |||
Net cash outflows from acquisition | 12,800,981 | |||
Assets | ||||
Cash and cash equivalents | 2,910,389 | |||
Accounts receivable | 3,561,827 | |||
Inventories | 2,428,616 | |||
Property, plant and equipment | 11,497,618 | |||
Right-of-use assets | 479,547 | |||
Intangible assets | 1,318,754 | |||
Deferred tax assets | 1,563,553 | |||
Others | 230,431 | |||
Total | 23,990,735 | |||
Liabilities | ||||
Accounts payable | (3,170,323) | |||
Other payables and payables on equipment | (1,962,119) | |||
Lease liabilities | (479,547) | |||
Others | (189,231) | |||
Total | (5,801,220) | |||
Total identifiable net assets | 18,189,515 | |||
Consideration transferred | 18,017,930 | |||
Less: Fair value of identifiable net assets | (18,189,515) | |||
Bargain purchase gain | $ (171,585) |
Contents of Significant Acco_65
Contents of Significant Accounts - Business Combinations - Additional Information (Detail) - 12 months ended Dec. 31, 2019 $ in Millions, ¥ in Billions | TWD ($) | JPY (¥) |
MIE FUJITSU SEMICONDUCTOR LIMITED (MIFS) [member] | ||
Disclosure of detailed information about business combination [line items] | ||
Percentage of equity interest acquired | 84.10% | |
Percentage of equity interest previously held | 15.90% | |
Cash Consideration of Business Combination | ¥ | ¥ 54.4 | |
UNITED SEMICONDUCTOR JAPAN CO LTD (USJC) [member] | ||
Disclosure of detailed information about business combination [line items] | ||
Operating Revenue of Business acquisition | $ 4,277 | |
Profit before tax From operations | 305 | |
Gain (loss) on disposal of equity method | 375 | |
Operating Revenue of Business acquisition | 160,767 | |
Profit before tax From operations | $ 5,606 |
Contents of Significant Acco_66
Contents of Significant Accounts - Summary of Derecognized Assets and Liabilities (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2018USD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) |
Assets | ||||||
Cash and cash equivalents | $ 95,492,477 | $ 3,192,661 | $ 83,661,739 | $ 2,797,116 | $ 81,674,572 | $ 57,578,981 |
Inventories | 21,714,802 | 726,005 | 18,203,119 | |||
Property, plant and equipment | 150,374,096 | 5,027,553 | 172,846,595 | |||
Others | 596,088 | 19,929 | 4,261,064 | |||
Total assets | 366,261,693 | 12,245,459 | 362,597,229 | |||
Liabilities | ||||||
Short-term loans | (12,015,206) | (401,712) | (13,103,808) | |||
Payables | (15,325,954) | (512,402) | (12,549,873) | |||
Current portion of long-term liabilities | (24,795,600) | (829,007) | (5,121,396) | |||
Long-term loans | (29,200,299) | (976,272) | (28,204,054) | |||
Others | (30,118,734) | (1,006,978) | (34,340,307) | |||
Liabilities | $ (163,347,778) | $ (5,461,310) | (158,199,746) | |||
UNISTARS CORP. [member] | ||||||
Assets | ||||||
Cash and cash equivalents | 14,430 | |||||
Notes and accounts receivable | 18,239 | |||||
Inventories | 46,717 | |||||
Property, plant and equipment | 45,515 | |||||
Others | 2,365 | |||||
Total assets | 127,266 | |||||
Liabilities | ||||||
Short-term loans | (34,313) | |||||
Payables | (29,309) | |||||
Current portion of long-term liabilities | (11,899) | |||||
Long-term loans | (5,502) | |||||
Others | (2,872) | |||||
Liabilities | (83,895) | |||||
Net assets of the subsidiary deconsolidated | $ 43,371 |
Contents of Significant Acco_67
Contents of Significant Accounts - Summary of Consideration Received and Loss Recognized (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2018TWD ($) | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) | |
Consideration Received And Loss Recognized From Transaction [Line Items] | |||||
Cash received | $ 4,617 | ||||
Add: Non-controllinginterests | 466,768 | $ 410,065 | $ 13,709 | $ 956,808 | $ 2,161,729 |
UNISTARS CORP. [member] | |||||
Consideration Received And Loss Recognized From Transaction [Line Items] | |||||
Cash received | 4,617 | ||||
Less: Net assets of the subsidiary deconsolidated | (43,371) | ||||
Add: Non-controllinginterests | 7,074 | ||||
Less: Goodwill | (176) | ||||
Loss on disposal of subsidiary | $ (31,856) |
Contents of Significant Acco_68
Contents of Significant Accounts - Summary of Net Cash Outflow Arising from Deconsolidation of the Subsidiary (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2018TWD ($) | |
Net Cash Outflow Arising From Deconsolidation Of Subsidiary [Abstract] | |
Cash received | $ 4,617 |
Net cash of subsidiary derecognized | (14,430) |
Net cash outflow from deconsolidation | $ (9,813) |
Significant Related Party Tra_3
Significant Related Party Transactions - Significant Intercompany Transactions Between Consolidated Entities (Detail) $ in Thousands, $ in Millions | 12 Months Ended | ||||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2018USD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of transactions between related parties [line items] | |||||
Royalty | $ 6,817 | ||||
Amount of downstream transaction | $ 350 | $ 350 | |||
UMC GROUP (USA) [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Sales | $ 47,736,335 | $ 57,107,585 | 59,968,172 | ||
Accounts receivable | $ 5,937,706 | $ 7,312,272 | $ 6,737,723 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | Net 60 days | Net 60 days | Net 60 days |
UMC GROUP JAPAN [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Sales | $ 3,933,964 | $ 4,159,637 | $ 4,212,523 | ||
Accounts receivable | $ 608,622 | $ 905,048 | $ 659,488 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | Net 60 days | Net 60 days | Net 60 days |
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Accounts receivable | $ 31,334 | $ 48,163 | $ 4,790,930 | ||
Royalty | $ 1,209,310 | $ 1,356,567 | $ 998,899 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 30 days | Net 30 days | Net 30 days | Net 30 days | Net 30 days |
Loan receivable | $ 1,201,200 | $ 3,924,360 | |||
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | UMC GROUP (USA) [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Sales | 152,012 | $ 307,471 | 214,147 | ||
Accounts receivable | $ 21,138 | $ 35,161 | $ 35,498 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | Net 60 days | Net 60 days | Net 60 days |
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | UMC GROUP JAPAN [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Sales | $ 250,736 | $ 272,218 | $ 223,740 | ||
Accounts receivable | $ 51,150 | $ 61,971 | $ 43,332 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | Net 60 days | Net 60 days | Net 60 days |
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | UMC GROUP (USA) [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Sales | $ 745,226 | $ 698,988 | $ 241,220 | ||
Accounts receivable | $ 33,242 | $ 120,678 | $ 141,272 | ||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | Net 60 days | Net 60 days | Net 60 days |
Significant Related Party Tra_4
Significant Related Party Transactions - Significant Transactions between Company and Other Related Parties (Detail) shares in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2019TWD ($)shares | Dec. 31, 2019USD ($)shares | Dec. 31, 2018TWD ($)shares | Dec. 31, 2017TWD ($)shares | Dec. 31, 2019USD ($) | |
Disclosure of transactions between related parties [line items] | |||||
Accounts receivable-related parties, net | $ 289,945 | $ 138,912 | $ 9,694 | ||
Acquisition of intangible assets | 2,443,593 | $ 81,698 | 838,675 | $ 1,283,938 | |
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | 13,298,679 | 11,555,847 | 444,623 | ||
Acquisition of investments accounted for under the equity method, Purchase price | 9,564,517 | 7,948,413 | $ 319,777 | ||
Disposal of subsidiaries, Proceeds | 4,617 | ||||
Disposal of available-for-sale financial assets, noncurrent, Proceeds | 0 | 0 | 0 | 2,159,636 | |
Disposal of available-for-sale financial assets, noncurrent, Disposal gain (loss) | (16,293) | $ (545) | (19,286) | 1,269,369 | |
Associates [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Operating revenues | 1,532,339 | 1,291,398 | 1,357,720 | ||
Accounts receivable-related parties, net | 278,702 | 134,646 | |||
Refund liability, current | 7,880 | 1,287 | |||
Acquisition of intangible assets | 339,463 | 200,610 | 322,808 | ||
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | 70,134 | ||||
Acquisition of investments accounted for under the equity method, Purchase price | $ 720,000 | $ 840,000 | |||
Acquisition of investments accounted for under the equity method, Trading Volume | shares | 72,000 | 72,000 | 84,000 | ||
Associates [member] | Stock Of Materials Analysis Technology Inc [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | $ 32,923 | ||||
Acquisition of shares, noncurrent financial assets at fair value through profit or loss, Trading Volume | shares | 500 | 500 | |||
Associates [member] | Stock Of Gear Radio Ltd [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | $ 37,211 | ||||
Acquisition of shares, noncurrent financial assets at fair value through profit or loss, Trading Volume | shares | 1,900 | 1,900 | |||
Joint ventures [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Operating revenues | $ 0 | $ 4,277 | 12,465 | ||
Other related parties [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Operating revenues | 45,523 | 27,881 | 30,417 | ||
Accounts receivable-related parties, net | 11,243 | 4,266 | |||
Refund liability, current | 48 | 71 | |||
Disposal of subsidiaries, Proceeds | 4,617 | ||||
Disposal of subsidiary, Disposal gain (loss) | $ (31,856) | ||||
Disposal of subsidiary, Trading Volume | shares | 46,168 | ||||
Disposal of available-for-sale financial assets, noncurrent, Proceeds | 50,745 | ||||
Disposal of available-for-sale financial assets, noncurrent, Disposal gain (loss) | $ (13,753) | ||||
Disposal of available-for-sale financial assets, noncurrent, Trading Volume | shares | 6,489 | ||||
Mask expenditure | 2,346,263 | $ 1,750,088 | $ 994,710 | ||
Other payables of mask expenditure | 683,892 | 571,036 | 580,789 | ||
All other related parties [member] | |||||
Disclosure of transactions between related parties [line items] | |||||
Operating revenues | 1,577,862 | 1,323,556 | $ 1,400,602 | ||
Refund liability, current | $ 7,928 | $ 1,358 |
Significant Related Party Tra_5
Significant Related Party Transactions - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2019 | |
Domestic [member] | Bottom of range [member] | |
Disclosure of transactions between related parties [line items] | |
Collection periods for accounts receivables | Month-end 30 days |
Domestic [member] | Top of range [member] | |
Disclosure of transactions between related parties [line items] | |
Collection periods for accounts receivables | Month-end 60 days |
Overseas [member] | Bottom of range [member] | |
Disclosure of transactions between related parties [line items] | |
Collection periods for accounts receivables | Net 30 days |
Overseas [member] | Top of range [member] | |
Disclosure of transactions between related parties [line items] | |
Collection periods for accounts receivables | Net 60 days |
Significant Related Party Tra_6
Significant Related Party Transactions - Key Management Personnel Compensation (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | |
Disclosure of transactions between related parties [abstract] | |||
Short-term employee benefits | $ 271,135 | $ 387,294 | $ 271,554 |
Post-employment benefits | 2,406 | 4,660 | 3,478 |
Termination benefits | 3,415 | 0 | 6,957 |
Share-based payment | 62,203 | 293,857 | 68 |
Others | 578 | 435 | 294 |
Total | $ 339,737 | $ 686,246 | $ 282,351 |
Assets Pledged as Collateral -
Assets Pledged as Collateral - Summary of Assets Pledged as Collateral (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 26,923,234 | $ 34,150,351 |
Refundable deposits time deposit and bank deposit [member] | Customs [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 811,035 | 961,198 |
Purpose of pledge | Customs duty guarantee | |
Refundable deposits time deposit [member] | Science park administration [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 348,117 | 237,358 |
Purpose of pledge | Collateral for land lease | |
Refundable deposits time deposit [member] | Science park administration [member] | Dormitory lease [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 19,510 | 19,579 |
Purpose of pledge | Collateral for dormitory lease | |
Refundable deposits time deposit [member] | Liquefied natural gas business division, CPC corporation, Taiwan [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 41,785 | 37,084 |
Purpose of pledge | Energy resources guarantee | |
Refundable deposits time deposit [member] | Bank of China [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 1,000,000 | 1,000,000 |
Purpose of pledge | Bank performance guarantee | |
Buildings [member] | Taiwan cooperative bank and secured syndicated loans from China development bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 5,381,590 | 5,823,938 |
Purpose of pledge | Collateral for long-term loans | |
Machinery and equipment [member] | Taiwan cooperative bank mega international commercial bank and secured syndicated loans from China development bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 19,029,077 | 25,762,086 |
Purpose of pledge | Collateral for long-term loans | |
Right-of-use assets [member] | Secured syndicated loans from China development bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 292,120 | 0 |
Purpose of pledge | Collateral for long-term loans | |
Other non current assets [member] | Secured syndicated loans from China development bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 0 | $ 309,108 |
Purpose of pledge | Collateral for long-term loans |
Significant Contingencies and_2
Significant Contingencies and Unrecognized Contract Commitments - Additional Information (Detail) ¥ in Billions, $ in Billions | 12 Months Ended | ||
Dec. 31, 2019TWD ($) | Dec. 31, 2018 | Dec. 31, 2019CNY (¥) | |
Disclosure of contingent liabilities [line items] | |||
Litigations and customs tax guarantee | $ 1.7 | ||
Patent license agreements and development contracts of intellectual property, contract amount | 10.8 | ||
Royalties and development fees not yet recognized | 1.4 | ||
Construction contracts, amount | 2 | ||
Construction contracts not yet recognized | $ 0.4 | ||
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | |||
Disclosure of contingent liabilities [line items] | |||
Amount of investment in subsidiaries | ¥ | ¥ 8.3 | ||
Ownership interest in subsidiary | 65.22% | 65.22% | |
Financial liability recognized in other noncurrent liabilities for the purchase from the other investors of their investments | ¥ | ¥ 4.9 | ||
Machinery and equipment [member] | |||
Disclosure of contingent liabilities [line items] | |||
Amounts available under unused letters of credit for importing machinery and equipment | $ 0.1 |
Significant Subsequent Events -
Significant Subsequent Events - Additional Information (Detail) ¥ in Billions | Feb. 11, 2020CNY (¥) |
USCXM [member] | Events after reporting period [member] | |
Disclosure of subsidiaries [line items] | |
Capital contribution | ¥ 3.5 |
Financial Risk and Fair Value_3
Financial Risk and Fair Value Disclosures - Categories of Financial Instruments (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Jan. 01, 2019TWD ($) | Dec. 31, 2018TWD ($) |
Disclosure of detailed information about financial instruments [abstract] | ||||
Financial assets at fair value through profit or loss | $ 14,021,473 | $ 12,084,297 | ||
Financial assets at fair value through other comprehensive income | 14,723,232 | $ 492,251 | 11,585,477 | |
Financial assets measured at amortized cost | ||||
Cash and cash equivalents (excludes cash on hand) | 95,486,403 | 83,655,648 | ||
Receivables | 26,459,392 | 24,583,451 | ||
Refundable deposits | 2,600,733 | 86,951 | 2,757,399 | |
Other financial assets | 2,353,066 | 2,320,037 | ||
Total | 155,644,299 | 136,986,309 | ||
Short-term loans | 12,015,206 | $ 401,712 | 13,103,808 | |
Payables | 27,433,065 | 23,559,548 | ||
Guarantee deposits (current portion included) | 296,694 | 665,793 | ||
Bonds payable (current portion included) | 38,781,416 | 41,378,182 | ||
Long-term loans (current portion included) | 33,902,074 | 30,826,215 | ||
Lease liabilities | 6,031,025 | $ 6,006,457 | 0 | |
Other financial liabilities | 20,093,441 | 20,523,099 | ||
Total | $ 138,552,921 | $ 130,056,645 |
Financial Risk and Fair Value_4
Financial Risk and Fair Value Disclosures - Additional Information (Detail) $ in Thousands, $ in Thousands, ¥ in Billions | 12 Months Ended | ||||
Dec. 31, 2019TWD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018JPY (¥) | |
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Financial assets | $ 155,644,299 | $ 136,986,309 | |||
Cash flow hedge reserve in other components of equity | $ 0 | $ (2,058) | $ 0 | ||
Accounts receivables from the top ten customers | 44.00% | 54.00% | |||
Profit or loss attributable to change in unrealized gains or losses for financial assets without quoted market prices held at end of period | $ 113,000 | $ 203,000 | $ 286,000 | ||
Interest rate risk [member] | |||||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Percentage increase in market risk | 0.10% | 0.10% | 0.10% | 0.10% | 0.10% |
Increase (decrease) in profit due to percentage increase in market risk | $ (46,000) | $ (44,000) | $ (58,000) | ||
Percentage decrease in market risk | 0.10% | 0.10% | 0.10% | 0.10% | 0.10% |
Increase (decrease) in profit due to percentage decrease in market risk | $ 46,000 | $ 44,000 | $ 58,000 | ||
Equity price risk [member] | |||||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Percentage increase in market risk | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% |
Increase (decrease) in profit due to percentage increase in market risk | $ 252,000 | $ 171,000 | $ 33,000 | ||
Percentage decrease in market risk | 5.00% | 5.00% | 5.00% | 5.00% | 5.00% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (252,000) | $ (171,000) | $ (33,000) | ||
Increase (decrease) in other comprehensive income due to percentage increase in market risk | 671,000 | 408,000 | 979,000 | ||
Increase (decrease) in other comprehensive income due to percentage decrease in market risk | $ (671,000) | $ (408,000) | $ (979,000) | ||
Taiwan, New Dollars | Currency risk [member] | |||||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Percentage increase in market risk | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
Increase (decrease) in profit due to percentage increase in market risk | $ (1,009,000) | $ (1,367,000) | $ (1,330,000) | ||
Percentage decrease in market risk | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
Increase (decrease) in profit due to percentage decrease in market risk | $ 1,009,000 | $ 1,367,000 | $ 1,330,000 | ||
China, Yuan Renminbi | Currency risk [member] | |||||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Percentage increase in market risk | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
Increase (decrease) in profit due to percentage increase in market risk | $ 2,200,000 | $ 2,624,000 | $ 4,011,000 | ||
Percentage decrease in market risk | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (2,200,000) | $ (2,624,000) | $ (4,011,000) | ||
Forward exchange contracts [member] | |||||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||||
Financial assets | ¥ | ¥ 23 | ||||
Cash flow hedge reserve in other components of equity | $ (3,000) |
Financial Risk and Fair Value_5
Financial Risk and Fair Value Disclosures - Maturity Profile of Financial Liabilities Based on Contractual Undiscounted Payments and Contractual Maturity (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | $ 12,211,621 | $ 13,171,811 |
Payables | 27,197,187 | 23,287,859 |
Guarantee deposits | 296,694 | 665,793 |
Bonds payable | 39,939,843 | 43,236,182 |
Long-term loans | 38,846,712 | 37,009,657 |
Lease liabilities | 7,128,064 | |
Other financial liabilities | 21,114,113 | 21,960,458 |
Total | 146,734,234 | 139,331,760 |
Not later than one year [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 12,211,621 | 13,171,811 |
Payables | 26,998,325 | 23,088,071 |
Guarantee deposits | 100,584 | 52,890 |
Bonds payable | 20,659,607 | 3,000,855 |
Long-term loans | 6,104,795 | 4,036,260 |
Lease liabilities | 740,939 | |
Other financial liabilities | 0 | 112,744 |
Total | 66,815,871 | 43,462,631 |
Later than two years and not later than three years [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 0 | 0 |
Payables | 198,862 | 199,788 |
Guarantee deposits | 97,108 | 154,787 |
Bonds payable | 10,590,265 | 23,187,913 |
Long-term loans | 19,631,931 | 10,997,829 |
Lease liabilities | 1,413,978 | |
Other financial liabilities | 12,668,287 | 0 |
Total | 44,600,431 | 34,540,317 |
Later than four years and not later than five years [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 0 | 0 |
Payables | 0 | 0 |
Guarantee deposits | 0 | 15,385 |
Bonds payable | 8,689,971 | 8,484,393 |
Long-term loans | 13,097,986 | 17,209,849 |
Lease liabilities | 1,180,955 | |
Other financial liabilities | 8,445,826 | 17,477,984 |
Total | 31,414,738 | 43,187,611 |
Later than five years [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 0 | 0 |
Payables | 0 | 0 |
Guarantee deposits | 99,002 | 442,731 |
Bonds payable | 0 | 8,563,021 |
Long-term loans | 12,000 | 4,765,719 |
Lease liabilities | 3,792,192 | |
Other financial liabilities | 0 | 4,369,730 |
Total | $ 3,903,194 | $ 18,141,201 |
Financial Risk and Fair Value_6
Financial Risk and Fair Value Disclosures - Details of Forward Exchange Contracts (Detail) - Forward exchange contracts [member] $ in Millions | 12 Months Ended |
Dec. 31, 2018USD ($) | |
Disclosure of detailed information about financial instruments [line items] | |
Notional Amount on sale of foreign currency | $ 28 |
Contract Period, beginning date | Dec. 10, 2018 |
Contract Period, end date | Jan. 7, 2019 |
Financial Risk and Fair Value_7
Financial Risk and Fair Value Disclosures - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) |
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | $ 722,794 | $ 24,166 | $ 528,450 |
Financial assets at fair value through profit or loss, noncurrent | 13,298,679 | 444,623 | 11,555,847 |
Financial assets at fair value through other comprehensive income, noncurrent | 14,723,232 | $ 492,251 | 11,585,477 |
Level 1 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 668,476 | 493,481 | |
Financial assets at fair value through profit or loss, noncurrent | 4,737,027 | 3,612,243 | |
Financial assets at fair value through other comprehensive income, noncurrent | 13,417,308 | 8,166,277 | |
Level 2 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 0 | 34,969 | |
Financial assets at fair value through profit or loss, noncurrent | 340,255 | 44,597 | |
Financial assets at fair value through other comprehensive income, noncurrent | 0 | 0 | |
Level 3 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 54,318 | 0 | |
Financial assets at fair value through profit or loss, noncurrent | 8,221,397 | 7,899,007 | |
Financial assets at fair value through other comprehensive income, noncurrent | $ 1,305,924 | $ 3,419,200 |
Financial Risk and Fair Value_8
Financial Risk and Fair Value Disclosures - Reconciliations for Fair Value Measurement in Level 3 Fair Value Hierarchy (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | |
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | $ 362,597,229 | ||
Ending balance | 366,261,693 | $ 12,245,459 | $ 362,597,229 |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 7,899,007 | 8,042,376 | |
Recognized in profit (loss) | (7,131) | (360,065) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 812,404 | 1,348,311 | |
Disposal | (329,846) | (778,362) | |
Return of capital | (14,954) | (22,954) | |
Transfer to Level 3 | 49,706 | 22,050 | |
Transfer out of Level 3 | (53,300) | (442,138) | |
Exchange effect | (80,171) | 89,789 | |
Ending balance | 8,275,715 | 7,899,007 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Option [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 0 | 31,605 | |
Recognized in profit (loss) | (31,605) | ||
Recognized in other comprehensive income (loss) | 0 | ||
Acquisition | 0 | ||
Disposal | 0 | ||
Return of capital | 0 | ||
Transfer to Level 3 | 0 | ||
Transfer out of Level 3 | 0 | ||
Exchange effect | 0 | ||
Ending balance | 0 | ||
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Common stocks [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 3,077,691 | 3,832,537 | |
Recognized in profit (loss) | (272,299) | (3,356) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 159,476 | 140,338 | |
Disposal | (1,475) | (468,337) | |
Return of capital | (14,954) | (22,954) | |
Transfer to Level 3 | 0 | 22,050 | |
Transfer out of Level 3 | (53,300) | (442,138) | |
Exchange effect | (14,451) | 19,551 | |
Ending balance | 2,880,688 | 3,077,691 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Funds [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 1,849,788 | 1,183,940 | |
Recognized in profit (loss) | (14,024) | 69,827 | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 204,082 | 577,347 | |
Disposal | 0 | 0 | |
Return of capital | 0 | 0 | |
Transfer to Level 3 | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | (28,821) | 18,674 | |
Ending balance | 2,011,025 | 1,849,788 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Preferred stocks [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 2,971,528 | 2,994,294 | |
Recognized in profit (loss) | 273,047 | (394,931) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 396,890 | 630,626 | |
Disposal | (328,371) | (310,025) | |
Return of capital | 0 | 0 | |
Transfer to Level 3 | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | (33,800) | 51,564 | |
Ending balance | 3,279,294 | 2,971,528 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Convertible bonds [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 0 | ||
Recognized in profit (loss) | 6,145 | ||
Recognized in other comprehensive income (loss) | 0 | ||
Acquisition | 51,956 | ||
Disposal | 0 | ||
Return of capital | 0 | ||
Transfer to Level 3 | 49,706 | ||
Transfer out of Level 3 | 0 | ||
Exchange effect | (3,099) | ||
Ending balance | 104,708 | 0 | |
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 3,419,200 | 3,584,020 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | 190,712 | (164,820) | |
Acquisition | 0 | 0 | |
Disposal | (2,303,988) | 0 | |
Return of capital | 0 | 0 | |
Transfer to Level 3 | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | 1,305,924 | 3,419,200 | |
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | Common stocks [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 3,235,174 | 3,350,694 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | 199,244 | (115,520) | |
Acquisition | 0 | 0 | |
Disposal | (2,303,988) | 0 | |
Return of capital | 0 | 0 | |
Transfer to Level 3 | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | 1,130,430 | 3,235,174 | |
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | Preferred stocks [member] | |||
Reconciliation of changes in fair value measurement, assets [abstract] | |||
Beginning balance | 184,026 | 233,326 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | (8,532) | (49,300) | |
Acquisition | 0 | 0 | |
Disposal | 0 | 0 | |
Return of capital | 0 | 0 | |
Transfer to Level 3 | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | $ 175,494 | $ 184,026 |
Financial Risk and Fair Value_9
Financial Risk and Fair Value Disclosures - Summary of Significant Unobservable Inputs of Fair Value Measurement in Level 3 Fair Value Hierarchy (Detail) - Equity price risk [member] - Unlisted equity securities [member] - Discount for lack of marketability [member] - Market approach [member] | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Bottom of range [member] | ||
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Discount for lack of marketability significant unobservable inputs entity own equity instruments | 0.00% | 15.00% |
Top of range [member] | ||
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Discount for lack of marketability significant unobservable inputs entity own equity instruments | 50.00% | 50.00% |
Financial Risk and Fair Valu_10
Financial Risk and Fair Value Disclosures - Summary of Significant Unobservable Inputs of Fair Value Measurement in Level 3 Fair Value Hierarchy (Parenthetical) (Detail) - Unlisted equity securities [member] - Discount for lack of marketability [member] - Market approach [member] - Equity price risk [member] - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2019 | Dec. 31, 2018 | |
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Percentage increase in the discount for lack of marketability | 5.00% | 5.00% |
Percentage decrease in the discount for lack of marketability | 5.00% | 5.00% |
Increase (decrease) in other comprehensive income due to percentage increase in the discount for lack of marketability | $ (87) | $ (241) |
Increase (decrease) in other comprehensive income due to percentage decrease in the discount for lack of marketability | 87 | 241 |
Increase (decrease) in profit or loss due to percentage increase in the discount for lack of marketability | (267) | (309) |
Increase (decrease) in profit or loss due to percentage decrease in the discount for lack of marketability | $ 191 | $ 309 |
Financial Risk and Fair Valu_11
Financial Risk and Fair Value Disclosures - Assets and Liabilities Not Recorded at Fair Value on a Recurring Basis But for Which Fair Value is Disclosed (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | $ 38,781,416 | $ 41,378,182 |
Long-term loans (current portion included) | 33,902,074 | 30,826,215 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | ||
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | 39,571,920 | 41,714,368 |
Long-term loans (current portion included) | 33,902,074 | 30,826,215 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 1 [member] | ||
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | 21,347,047 | 23,929,019 |
Long-term loans (current portion included) | 0 | 0 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 2 [member] | ||
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | 18,224,873 | 17,785,349 |
Long-term loans (current portion included) | 33,902,074 | 30,826,215 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | Level 3 [member] | ||
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | 0 | 0 |
Long-term loans (current portion included) | $ 0 | $ 0 |
Operating Segment Information -
Operating Segment Information - Reportable Segment Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2019USD ($) | |
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | $ 148,201,641 | $ 4,954,919 | $ 151,252,571 | $ 149,284,706 | |
Segment net income (loss), net of tax | 4,576,250 | 153,001 | 3,247,797 | 6,679,229 | |
Acquisition of property, plant and equipment | 16,518,483 | 552,273 | 19,590,075 | 44,236,276 | |
Acquisition of intangible assets | 2,443,593 | 81,698 | 838,675 | 1,283,938 | |
Cash payments for the principal portion of the lease liability | 633,488 | 21,180 | 0 | 0 | |
Depreciation | 47,172,881 | 1,577,161 | 49,948,589 | 50,965,120 | |
Share of profit or loss of associates and joint ventures | 115,329 | 3,856 | (616,665) | 157,837 | |
Income tax expense (benefit) | 230,346 | $ 7,701 | (1,129,877) | 992,481 | |
Impairment loss | 118,134 | 46,225 | 950,335 | ||
Segment assets | 366,261,693 | 362,597,229 | $ 12,245,459 | ||
Segment liabilities | 163,347,778 | 158,199,746 | $ 5,461,310 | ||
Intersegment Eliminations [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | (19,290) | (13,600) | |||
Operating segments [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 148,201,641 | 151,252,571 | 149,284,706 | ||
Segment net income (loss), net of tax | 5,714,316 | 2,085,522 | 6,062,725 | ||
Acquisition of property, plant and equipment | 16,518,483 | 19,590,075 | 44,236,276 | ||
Acquisition of intangible assets | 2,443,593 | ||||
Cash payments for the principal portion of the lease liability | 633,488 | ||||
Depreciation | 47,172,881 | 49,948,589 | 50,965,120 | ||
Share of profit or loss of associates and joint ventures | 733,044 | (1,225,231) | (291,578) | ||
Income tax expense (benefit) | (393,130) | (458,653) | 1,167,157 | ||
Impairment loss | 118,134 | 46,225 | 950,335 | ||
Segment assets | 370,114,132 | 364,792,408 | |||
Segment liabilities | 163,113,848 | 158,068,776 | |||
Operating segments [member] | Wafer fabrication [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 148,123,306 | 151,023,932 | 148,939,836 | ||
Segment net income (loss), net of tax | 6,156,681 | 2,688,331 | 6,728,620 | ||
Acquisition of property, plant and equipment | 16,518,483 | 19,589,770 | 44,229,488 | ||
Acquisition of intangible assets | 2,443,593 | ||||
Cash payments for the principal portion of the lease liability | 614,845 | ||||
Depreciation | 47,038,876 | 49,777,242 | 50,737,240 | ||
Share of profit or loss of associates and joint ventures | 733,044 | (1,201,986) | (258,959) | ||
Income tax expense (benefit) | (414,104) | (456,058) | 1,167,154 | ||
Impairment loss | 33,160 | 46,225 | 632,207 | ||
Segment assets | 369,189,983 | 363,529,040 | |||
Segment liabilities | 161,955,970 | 157,000,054 | |||
Operating segments [member] | New business [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 78,335 | 228,639 | 344,870 | ||
Segment net income (loss), net of tax | (442,365) | (602,809) | (665,895) | ||
Acquisition of property, plant and equipment | 0 | 305 | 6,788 | ||
Acquisition of intangible assets | 0 | ||||
Cash payments for the principal portion of the lease liability | 18,643 | ||||
Depreciation | 134,005 | 171,347 | 227,880 | ||
Share of profit or loss of associates and joint ventures | 0 | (23,245) | (32,619) | ||
Income tax expense (benefit) | 20,974 | (2,595) | 3 | ||
Impairment loss | 84,974 | 0 | 318,128 | ||
Segment assets | 924,149 | 1,263,368 | |||
Segment liabilities | 1,157,878 | 1,068,722 | |||
Adjustment and elimination [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 0 | 0 | 0 | ||
Segment net income (loss), net of tax | (1,138,066) | 1,162,275 | 616,504 | ||
Acquisition of property, plant and equipment | 0 | 0 | 0 | ||
Acquisition of intangible assets | 0 | ||||
Cash payments for the principal portion of the lease liability | 0 | ||||
Depreciation | 0 | 0 | 0 | ||
Share of profit or loss of associates and joint ventures | (617,715) | 608,566 | 449,415 | ||
Income tax expense (benefit) | 623,476 | (671,224) | (174,676) | ||
Impairment loss | 0 | 0 | 0 | ||
Segment assets | (3,852,439) | (2,195,179) | |||
Segment liabilities | $ 233,930 | 130,970 | |||
Intersegments [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 19,290 | 13,600 | |||
Intersegments [member] | Wafer fabrication [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | 0 | 0 | |||
Intersegments [member] | New business [member] | |||||
Disclosure of Operating Segments [Line Items] | |||||
Operating revenues | $ 19,290 | $ 13,600 |
Operating Segment Information_2
Operating Segment Information - Geographic Information, Non-current Assets (Detail) - TWD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 |
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | $ 164,659,880 | $ 180,743,533 |
Taiwan [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 73,481,714 | 90,046,190 |
Singapore [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 15,191,880 | 16,881,746 |
China (includes Hong Kong) [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 63,622,327 | 73,627,957 |
USA [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 70,498 | 31,919 |
Europe [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 24,383 | 155,489 |
Japan [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 12,265,769 | 232 |
Others [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | $ 3,309 | $ 0 |
Operating Segment Information_3
Operating Segment Information - Individual Customers Accounting for at least 10% of Operating Revenues (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2017TWD ($) | |
Disclosure of Major Customers [Line Items] | ||||
Operating revenues | $ 148,201,641 | $ 4,954,919 | $ 151,252,571 | $ 149,284,706 |
Customer concentration risk [member] | Wafer fabrication [member] | Customer A [member] | ||||
Disclosure of Major Customers [Line Items] | ||||
Operating revenues | $ 17,576,293 | $ 15,357,470 | $ 15,632,722 |
Capital Management - Debt to Ca
Capital Management - Debt to Capital Ratios (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2019TWD ($) | Dec. 31, 2019USD ($) | Dec. 31, 2018TWD ($) | Dec. 31, 2018USD ($) | Dec. 31, 2017TWD ($) | Dec. 31, 2016TWD ($) |
Disclosure of capital management [abstract] | ||||||
Total liabilities | $ 163,347,778 | $ 5,461,310 | $ 158,199,746 | |||
Less: Cash and cash equivalents | (95,492,477) | (3,192,661) | (83,661,739) | $ (2,797,116) | $ (81,674,572) | $ (57,578,981) |
Net debt | 67,855,301 | 74,538,007 | ||||
Total equity | 202,913,915 | $ 6,784,149 | 204,397,483 | $ 209,620,998 | $ 214,946,374 | |
Total capital | $ 270,769,216 | $ 278,935,490 | ||||
Debt to capital ratios | 25.06% | 25.06% | 26.72% | 26.72% |