Cover
Cover | 12 Months Ended |
Dec. 31, 2023 shares | |
Document Information [Line Items] | |
Document Type | 20-F |
Amendment Flag | false |
Document Period End Date | Dec. 31, 2023 |
Document Fiscal Year Focus | 2023 |
Document Fiscal Period Focus | FY |
Entity Registrant Name | United Microelectronics Corporation |
Entity Central Index Key | 0001033767 |
Entity Current Reporting Status | Yes |
Entity Voluntary Filers | No |
Entity Interactive Data Current | Yes |
Current Fiscal Year End Date | --12-31 |
Entity Filer Category | Large Accelerated Filer |
Entity Well-known Seasoned Issuer | Yes |
ICFR Auditor Attestation Flag | true |
Entity Common Stock, Shares Outstanding | 12,529,822,160 |
Entity Shell Company | false |
Entity Emerging Growth Company | false |
Title of 12(b) Security | American Depositary Shares, each representing 5 Common Shares |
Trading Symbol | UMC |
Security Exchange Name | NYSE |
Entity File Number | 001-15128 |
Entity Incorporation, State or Country Code | F5 |
Entity Address, Address Line One | No. 3, Li-Hsin 2nd Road |
Entity Address, Address Line Two | Hsinchu Science Park |
Entity Address, City or Town | Hsinchu |
Entity Address, Country | TW |
Document Annual Report | true |
Document Transition Report | false |
Document Shell Company Report | false |
Document Registration Statement | false |
Document Accounting Standard | International Financial Reporting Standards |
Entity Address, Postal Zip Code | 300094 |
Auditor Name | Ernst & Young |
Auditor Firm ID | 1443 |
Auditor Location | Taipei, Taiwan |
Document Financial Statement Error Correction [Flag] | false |
Business Contact [Member] | |
Document Information [Line Items] | |
Contact Personnel Name | Chitung Liu |
Entity Address, Address Line One | 8F, No. 68 |
Entity Address, Address Line Two | Section 1 |
Entity Address, Address Line Three | Neihu Road |
Entity Address, City or Town | Taipei |
Entity Address, Country | TW |
City Area Code | +886-2 |
Local Phone Number | 2658-9168 |
Contact Personnel Email Address | ir@umc.com |
Entity Address, Postal Zip Code | 114066 |
Consolidated Balance Sheets
Consolidated Balance Sheets $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Current assets | |||
Cash and cash equivalents | $ 132,553,615 | $ 4,328,988 | $ 173,818,777 |
Financial assets at fair value through profit or loss, current | 443,601 | 14,487 | 705,918 |
Financial assets at fair value through other comprehensive income, current | 5,753,379 | 187,896 | 3,213,057 |
Financial assets measured at amortized cost, current | 6,131,077 | 200,231 | 861,817 |
Contract assets, current | 739,528 | 24,152 | 373,318 |
Accounts receivable, net | 29,237,550 | 954,851 | 36,444,510 |
Accounts receivable-related parties, net | 347,964 | 11,364 | 530,577 |
Other receivables | 2,707,400 | 88,419 | 1,807,999 |
Current tax assets | 130,123 | 4,250 | 40,256 |
Inventories, net | 35,712,558 | 1,166,315 | 31,069,960 |
Other current assets | 3,040,597 | 99,301 | 3,504,849 |
Total current assets | 216,797,392 | 7,080,254 | 252,371,038 |
Non-current assets | |||
Financial assets at fair value through profit or loss, noncurrent | 16,694,860 | 545,227 | 17,784,651 |
Financial assets at fair value through other comprehensive income, noncurrent | 11,930,581 | 389,634 | 11,976,543 |
Financial assets measured at amortized cost, noncurrent | 222,691 | 7,273 | 7,491 |
Investments accounted for under the equity method | 32,785,800 | 1,070,731 | 26,504,913 |
Property, plant and equipment | 239,123,248 | 7,809,381 | 170,982,066 |
Right-of-use assets | 7,000,355 | 228,620 | 7,611,991 |
Intangible assets | 4,372,555 | 142,801 | 4,275,200 |
Deferred tax assets | 5,130,411 | 167,551 | 5,226,236 |
Prepayment for equipment | 4,725,583 | 154,330 | 19,439,559 |
Refundable deposits | 2,708,823 | 88,466 | 2,749,691 |
Other noncurrent assets | 5,084,533 | 166,053 | 5,716,204 |
Total non-current assets | 329,779,440 | 10,770,067 | 272,274,545 |
Total assets | 546,576,832 | 17,850,321 | 524,645,583 |
Current liabilities | |||
Short-term loans | 13,530,000 | 441,868 | 0 |
Financial liabilities at fair value through profit or loss, current | 1,019,362 | 33,291 | 438,397 |
Contract liabilities, current | 3,250,712 | 106,163 | 3,546,815 |
Accounts payable | 7,526,159 | 245,792 | 8,982,418 |
Other payables | 25,670,984 | 838,373 | 31,279,208 |
Payables on equipment | 19,196,256 | 626,919 | 18,632,245 |
Current tax liabilities | 9,539,764 | 311,553 | 19,450,909 |
Lease liabilities, current | 514,324 | 16,797 | 537,314 |
Other financial liabilities, current | 0 | 0 | 17,226,490 |
Current portion of long-term liabilities | 16,006,797 | 522,756 | 7,586,644 |
Other current liabilities | 5,642,792 | 184,285 | 4,928,283 |
Total current liabilities | 101,897,150 | 3,327,797 | 112,608,723 |
Non-current liabilities | |||
Contract liabilities, noncurrent | 430,640 | 14,064 | 438,188 |
Bonds payable | 24,579,651 | 802,732 | 23,083,096 |
Long-term loans | 20,656,248 | 674,600 | 16,794,289 |
Deferred tax liabilities | 5,631,964 | 183,931 | 3,562,436 |
Lease liabilities, noncurrent | 4,878,863 | 159,336 | 5,199,781 |
Net defined benefit liabilities, noncurrent | 2,205,085 | 72,014 | 2,869,402 |
Guarantee deposits | 40,122,956 | 1,310,351 | 30,518,585 |
Other noncurrent liabilities | 2,457,307 | 80,252 | 6,760,135 |
Total non-current liabilities | 100,962,714 | 3,297,280 | 89,225,912 |
Total liabilities | 202,859,864 | 6,625,077 | 201,834,635 |
Commitments and contingencies | |||
Capital | |||
Common stock | 125,298,222 | 4,092,039 | 125,047,490 |
Additional paid-in capital | |||
Premiums | 3,997,662 | 130,557 | 3,215,160 |
Treasury stock transactions | 8,277,564 | 270,332 | 7,425,869 |
Transactions with noncontrolling interests | 3,156,983 | 103,102 | 534,109 |
Share-based payment | 2,373,830 | 77,526 | 2,221,709 |
Other | 19,396 | 633 | 1,746,172 |
Retained earnings | |||
Legal reserve | 30,472,125 | 995,171 | 21,566,986 |
Special reserve | 2,734,058 | 89,290 | 4,914,214 |
Unappropriated earnings | 176,391,220 | 5,760,653 | 169,725,371 |
Other components of equity | |||
Exchange differences on translation of foreign operations | (8,439,670) | (275,626) | (6,369,416) |
Unrealized gains or losses on financial assets measured at fair value through other comprehensive income | 10,889,828 | 355,644 | 2,892,583 |
Unearned employee compensation | (1,991,331) | (65,033) | (1,831,030) |
Treasury stock | (9,803,778) | (320,176) | (8,621,948) |
Total equity attributable to the parent company | 343,376,109 | 11,214,112 | 322,467,269 |
Non-controlling interests | 340,859 | 11,132 | 343,679 |
Total equity | 343,716,968 | 11,225,244 | 322,810,948 |
Total liabilities and equity | $ 546,576,832 | $ 17,850,321 | $ 524,645,583 |
Consolidated Balance Sheets (Pa
Consolidated Balance Sheets (Parenthetical) - $ / shares | Dec. 31, 2023 | Dec. 31, 2022 |
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 | 12,529,822,000 | 12,504,749,000 |
Consolidated Statements of Comp
Consolidated Statements of Comprehensive Income $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) $ / shares | Dec. 31, 2023 USD ($) $ / shares | Dec. 31, 2022 TWD ($) $ / shares | Dec. 31, 2021 TWD ($) $ / shares | |
Statement of comprehensive income [abstract] | ||||
Operating revenues | $ 222,533,000 | $ 7,267,570 | $ 278,705,264 | $ 213,011,018 |
Operating costs | (144,789,162) | (4,728,581) | (152,940,887) | (140,961,389) |
Gross profit | 77,743,838 | 2,538,989 | 125,764,377 | 72,049,629 |
Operating expenses | ||||
Sales and marketing expenses | (3,225,154) | (105,328) | (4,182,929) | (4,671,599) |
General and administrative expenses | (7,477,037) | (244,188) | (9,672,613) | (7,989,860) |
Research and development expenses | (13,283,830) | (433,829) | (12,953,534) | (12,934,836) |
Expected credit impairment gains (losses) | 130,518 | 4,263 | (2,723) | 6,121 |
Subtotal | (23,855,503) | (779,082) | (26,811,799) | (25,590,174) |
Net other operating income and expenses | 4,002,326 | 130,709 | 5,339,647 | 5,226,831 |
Operating income | 57,890,661 | 1,890,616 | 104,292,225 | 51,686,286 |
Non-operating income and expenses | ||||
Interest income | 4,853,124 | 158,495 | 2,022,314 | 575,719 |
Other income | 1,773,498 | 57,920 | 2,163,043 | 1,653,006 |
Other gains and losses | 223,096 | 7,286 | (1,134,540) | 866,130 |
Finance costs | (1,570,374) | (51,286) | (1,866,329) | (1,962,930) |
Share of profit or loss of associates and joint ventures | 4,307,614 | 140,680 | 1,626,103 | 5,193,495 |
Bargain purchase gain in acquisition of equity investee | 494,001 | 16,133 | 0 | 0 |
Exchange gain, net | 478,784 | 15,636 | 2,522,844 | 484,726 |
Subtotal | 10,559,743 | 344,864 | 5,333,435 | 6,810,146 |
Income from continuing operations before income tax | 68,450,404 | 2,235,480 | 109,625,660 | 58,496,432 |
Income tax expense | (8,311,270) | (271,433) | (19,326,895) | (7,918,252) |
Net income | 60,139,134 | 1,964,047 | 90,298,765 | 50,578,180 |
Items that will not be reclassified subsequently to profit or loss | ||||
Remeasurements of defined benefit pension plans | 402,234 | 13,136 | 296,804 | (197,477) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income | 5,530,359 | 180,612 | (4,646,064) | 5,811,342 |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss | 1,610,116 | 52,584 | (1,694,965) | 2,959,130 |
Income tax related to items that will not be reclassified subsequently | (414,395) | (13,533) | (6,999) | (417,076) |
Subtotal | 7,128,314 | 232,799 | (6,051,224) | 8,155,919 |
Items that may be reclassified subsequently to profit or loss | ||||
Exchange differences on translation of foreign operations | (2,386,278) | (77,932) | 9,292,308 | (4,741,016) |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss | (74,418) | (2,430) | 91,442 | (24,412) |
Income tax related to items that may be reclassified subsequently | 390,428 | 12,751 | 859,566 | 29,938 |
Subtotal | (2,070,268) | (67,611) | 10,243,316 | (4,735,490) |
Total other comprehensive income (loss) | 5,058,046 | 165,188 | 4,192,092 | 3,420,429 |
Total comprehensive income (loss) | 65,197,180 | 2,129,235 | 94,490,857 | 53,998,609 |
Net income (loss) attributable to: | ||||
Shareholders of the parent | 59,688,950 | 1,949,345 | 89,478,805 | 51,246,425 |
Non-controlling interests | 450,184 | 14,702 | 819,960 | (668,245) |
Net income | 60,139,134 | 1,964,047 | 90,298,765 | 50,578,180 |
Comprehensive income (loss) attributable to: | ||||
Shareholders of the parent | 64,747,010 | 2,114,533 | 93,670,889 | 54,666,873 |
Non-controlling interests | 450,170 | 14,702 | 819,968 | (668,264) |
Total comprehensive income (loss) | $ 65,197,180 | $ 2,129,235 | $ 94,490,857 | $ 53,998,609 |
Earnings per share (NTD) | ||||
Earnings per share-basic | (per share) | $ 4.92 | $ 0.16 | $ 7.4 | $ 4.27 |
Earnings per share-diluted | (per share) | $ 4.82 | $ 0.16 | $ 7.16 | $ 4.19 |
Consolidated Statements of Chan
Consolidated Statements of Changes in Equity $ in Thousands, $ in Thousands | TWD ($) | USD ($) | Capital [member] Common stock [member] TWD ($) | Additional paid-in capital [member] TWD ($) | Legal Reserve [member] TWD ($) | Special Reserve [member] TWD ($) | Unappropriated Earnings [member] TWD ($) | Exchange Differences on Translation of Foreign Operations [member] TWD ($) | Unrealized Gains or Losses on Financial Assets Measured at Fair Value through Other Comprehensive Income [Member] TWD ($) | Unearned Employee Compensation [Member] TWD ($) | Treasury Stock [member] TWD ($) | Equity attributable to the parent company [member] TWD ($) | Non-controlling Interests [member] TWD ($) |
Balance at Dec. 31, 2020 | $ 223,139,562 | $ 124,224,015 | $ 44,452,987 | $ 12,536,526 | $ 11,022,314 | $ 53,429,442 | $ (11,877,253) | $ 1,327,344 | $ (3,667,395) | $ (8,421,774) | $ 223,026,206 | $ 113,356 | |
Appropriation and distribution of retained earnings | |||||||||||||
Legal reserve | 3,197,890 | (3,197,890) | |||||||||||
Special reserve reversed | (2,857,666) | 2,857,666 | |||||||||||
Cash dividends | (19,875,842) | (19,875,842) | (19,875,842) | ||||||||||
Net income (loss) | 50,578,180 | 51,246,425 | 51,246,425 | (668,245) | |||||||||
Other comprehensive income (loss) | 3,420,429 | (148,768) | (4,735,471) | 8,304,687 | 3,420,448 | (19) | |||||||
Total comprehensive income (loss) | 53,998,609 | 51,097,657 | (4,735,471) | 8,304,687 | 54,666,873 | (668,264) | |||||||
Share-based payment transaction | 1,745,711 | (2,617) | 293,374 | 1,454,954 | 1,745,711 | ||||||||
Share of changes in net assets of associates and joint ventures accounted for using equity method | (540) | (540) | 430,850 | (430,850) | (540) | ||||||||
Changes in subsidiaries' ownership | (1,020,566) | (1,009,440) | (1,009,440) | (11,126) | |||||||||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | 1,070,932 | 961,003 | 109,929 | 1,070,932 | |||||||||
Disposal of equity instruments investments measured at fair value through other comprehensive income | 0 | ||||||||||||
Non-Controlling Interests | 23,430 | 23,430 | |||||||||||
Share exchange | 4,661,865 | 611,078 | 3,930,986 | 119,801 | 4,661,865 | ||||||||
Others | 631,886 | 442,786 | (576,685) | (133,899) | 765,785 | ||||||||
Balance at Dec. 31, 2021 | 264,375,047 | 124,832,476 | 50,080,596 | 15,734,416 | 8,164,648 | 83,155,758 | (16,612,724) | 9,201,181 | (2,212,441) | (8,192,044) | 264,151,866 | 223,181 | |
Impact of retroactive applications at Dec. 31, 2021 | (219,932) | (153,843) | (153,843) | (66,089) | |||||||||
Adjusted balance at Dec. 31, 2021 | 264,155,115 | 124,832,476 | 50,080,596 | 15,734,416 | 8,164,648 | 83,001,915 | (16,612,724) | 9,201,181 | (2,212,441) | (8,192,044) | 263,998,023 | 157,092 | |
Appropriation and distribution of retained earnings | |||||||||||||
Legal reserve | 5,832,570 | (5,832,570) | |||||||||||
Special reserve reversed | (3,250,434) | 3,250,434 | |||||||||||
Cash distributed from additional paid-in capital | (37,446,370) | (37,446,370) | (37,446,370) | ||||||||||
Net income (loss) | 90,298,765 | 89,478,805 | 89,478,805 | 819,960 | |||||||||
Other comprehensive income (loss) | 4,192,092 | 258,171 | 10,243,308 | (6,309,395) | 4,192,084 | 8 | |||||||
Total comprehensive income (loss) | 94,490,857 | 89,736,976 | 10,243,308 | (6,309,395) | 93,670,889 | 819,968 | |||||||
Share-based payment transaction | 1,351,738 | 215,014 | 755,313 | (1,490) | 381,411 | 1,350,248 | 1,490 | ||||||
Share of changes in net assets of associates and joint ventures accounted for using equity method | 55,392 | 55,392 | (797) | 797 | 55,392 | ||||||||
Changes in subsidiaries' ownership | (430,436) | (429,097) | (429,097) | (1,339) | |||||||||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | 205,857 | 635,761 | (429,904) | 205,857 | |||||||||
Disposal of equity instruments investments measured at fair value through other comprehensive income | 0 | ||||||||||||
Non-Controlling Interests | 5,456 | 5,456 | |||||||||||
Others | 423,339 | 1,062,327 | 1,062,327 | (638,988) | |||||||||
Balance at Dec. 31, 2022 | 322,810,948 | 125,047,490 | 15,143,019 | 21,566,986 | 4,914,214 | 169,725,371 | (6,369,416) | 2,892,583 | (1,831,030) | (8,621,948) | 322,467,269 | 343,679 | |
Appropriation and distribution of retained earnings | |||||||||||||
Legal reserve | 8,905,139 | (8,905,139) | |||||||||||
Special reserve reversed | (2,180,156) | 2,180,156 | |||||||||||
Cash dividends | (45,017,096) | (45,017,096) | (45,017,096) | ||||||||||
Net income (loss) | 60,139,134 | $ 1,964,047 | 59,688,950 | 59,688,950 | 450,184 | ||||||||
Other comprehensive income (loss) | 5,058,046 | 165,188 | 327,156 | (2,070,254) | 6,801,158 | 5,058,060 | (14) | ||||||
Total comprehensive income (loss) | 65,197,180 | 2,129,235 | 60,016,106 | (2,070,254) | 6,801,158 | 64,747,010 | 450,170 | ||||||
Share-based payment transaction | 1,026,023 | 250,732 | 934,945 | (5,170) | 0 | (160,301) | 1,020,206 | 5,817 | |||||
Share of changes in net assets of associates and joint ventures accounted for using equity method | 17,396 | 46,265 | 403,488 | (432,357) | 17,396 | ||||||||
Disposal of investments accounted for under the equity method | 5 | 5 | (56) | 56 | 5 | ||||||||
The differences between the fair value of the consideration paid or received from acquiring or disposing subsidiaries and the carrying amounts of the subsidiaries | 2,572,818 | 2,572,818 | 2,572,818 | ||||||||||
Changes in subsidiaries' ownership | (288,284) | 3,485 | (292,225) | (288,740) | 456 | ||||||||
Adjustments due to reciprocal stockholdings held by subsidiaries and associates | (415,962) | 851,695 | (85,827) | (1,181,830) | (415,962) | ||||||||
Disposal of equity instruments investments measured at fair value through other comprehensive income | (1,628,388) | (1,628,388) | 1,628,388 | ||||||||||
Non-Controlling Interests | 4,187 | 4,187 | |||||||||||
Others | (2,190,247) | (1,726,797) | (1,726,797) | (463,450) | |||||||||
Balance at Dec. 31, 2023 | $ 343,716,968 | $ 11,225,244 | $ 125,298,222 | $ 17,825,435 | $ 30,472,125 | $ 2,734,058 | $ 176,391,220 | $ (8,439,670) | $ 10,889,828 | $ (1,991,331) | $ (9,803,778) | $ 343,376,109 | $ 340,859 |
Consolidated Statements of Cash
Consolidated Statements of Cash Flows $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Cash flows from operating activities: | ||||
Net income before tax | $ 68,450,404 | $ 2,235,480 | $ 109,625,660 | $ 58,496,432 |
Adjustments to reconcile net income before tax to net cash provided by operating activities: | ||||
Depreciation | 37,757,556 | 1,233,101 | 41,328,374 | 44,179,632 |
Amortization | 2,726,481 | 89,043 | 2,841,334 | 2,894,942 |
Expected credit impairment losses (gains) | (130,518) | (4,263) | 2,723 | (6,121) |
Net loss (gain) of financial assets and liabilities at fair value through profit or loss | 40,553 | 1,324 | 1,247,962 | (2,892,470) |
Interest expense | 1,473,729 | 48,130 | 1,785,311 | 1,868,089 |
Interest income | (4,853,124) | (158,495) | (2,022,314) | (575,719) |
Dividend income | (1,773,498) | (57,920) | (2,163,043) | (1,653,006) |
Share-based payment | 1,031,896 | 33,700 | 1,351,738 | 1,745,745 |
Share of profit of associates and joint ventures | (4,307,614) | (140,680) | (1,626,103) | (5,193,495) |
Gain on disposal of property, plant and equipment | (268,293) | (8,762) | (482,983) | (143,735) |
Loss (gain) on disposal of investments accounted for under the equity method | (163,395) | (5,336) | (50,553) | 16,388 |
Loss on repurchases of bonds | 0 | 0 | 203,851 | 0 |
Exchange loss (gain) on financial assets and liabilities | 85,353 | 2,788 | 2,436,159 | (505,434) |
Bargain purchase gain in acquisition of equity investee | (494,001) | (16,133) | 0 | 0 |
Loss (gain) on lease modification | (113) | (4) | (1,162) | 6 |
Amortization of deferred government grants | (2,663,843) | (86,997) | (4,163,746) | (4,069,055) |
Others | 0 | 0 | 0 | 243,447 |
Income and expense adjustments | 28,461,169 | 929,496 | 40,687,548 | 35,909,214 |
Changes in operating assets and liabilities: | ||||
Financial assets and liabilities at fair value through profit or loss | 1,945,525 | 63,538 | 14,825 | 119,904 |
Contract assets | (381,105) | (12,446) | (47,842) | (81,887) |
Notes receivable and accounts receivable | 7,201,939 | 235,204 | (1,115,482) | (8,590,622) |
Other receivables | (526,223) | (17,186) | (914,736) | 134,111 |
Inventories | (4,944,756) | (161,488) | (7,637,528) | (871,589) |
Other current assets | 939,912 | 30,696 | (4,041,038) | (227,852) |
Contract fulfillment costs | (164,316) | (5,366) | (97,027) | (71,828) |
Contract liabilities | (267,858) | (8,748) | (252,594) | 1,637,105 |
Accounts payable | (1,341,114) | (43,799) | 490,949 | 688,652 |
Other payables | (5,683,081) | (185,600) | 9,230,484 | 4,092,040 |
Other current liabilities | 1,470,483 | 48,023 | 791,279 | (506,837) |
Net defined benefit liabilities | (262,084) | (8,559) | (711,115) | (482,809) |
Other noncurrent liabilities | (89,593) | (2,926) | (8,039) | 71,430 |
Cash generated from operations | 94,809,302 | 3,096,319 | 146,015,344 | 90,315,464 |
Interest received | 4,579,972 | 149,575 | 1,852,783 | 505,379 |
Dividend received | 3,649,805 | 119,197 | 4,132,529 | 3,006,829 |
Interest paid | (1,027,500) | (33,557) | (1,422,337) | (1,539,069) |
Income tax paid | (16,011,870) | (522,922) | (4,717,790) | (1,936,712) |
Net cash provided by operating activities | 85,999,709 | 2,808,612 | 145,860,529 | 90,351,891 |
Cash flows from investing activities: | ||||
Acquisition of financial assets at fair value through profit or loss | (1,182,248) | (38,610) | (1,041,792) | (921,916) |
Proceeds from disposal of financial assets at fair value through profit or loss | 525,237 | 17,153 | 773,318 | 439,145 |
Acquisition of financial assets measured at amortized cost | (6,296,321) | (205,628) | (1,682,788) | (37,141,310) |
Proceeds from redemption of financial assets measured at amortized cost | 678,907 | 22,172 | 30,179,933 | 22,132,639 |
Proceeds from disposal of investments accounted for under the equity method | 293,266 | 9,578 | 0 | 0 |
Proceeds from capital reduction of investments accounted for under the equity method | 1,303,106 | 42,557 | 0 | 0 |
Increase in prepayment for investments | 0 | 0 | 0 | (5,025) |
Proceeds from capital reduction of financial assets at fair value through other comprehensive income | 0 | 0 | 0 | 42,150 |
Disposal of subsidiary | 0 | 0 | 0 | 714,358 |
Acquisition of property, plant and equipment | (91,473,668) | (2,987,383) | (80,127,628) | (48,034,633) |
Proceeds from disposal of property, plant and equipment | 323,385 | 10,561 | 669,282 | 216,314 |
Increase in refundable deposits | (44,100) | (1,440) | (558,491) | (274,015) |
Decrease in refundable deposits | 83,856 | 2,739 | 186,175 | 220,750 |
Acquisition of intangible assets | (2,546,516) | (83,165) | (2,756,155) | (1,924,924) |
Government grants related to assets acquisition | 591,086 | 19,304 | 173,909 | 2,498,984 |
Increase in other noncurrent assets | (42,532) | (1,389) | (243,084) | (125,917) |
Decrease in other noncurrent assets | 0 | 0 | 55 | 0 |
Net cash used in investing activities | (97,786,542) | (3,193,551) | (54,427,266) | (62,163,400) |
Cash flows from financing activities: | ||||
Increase in short-term loans | 29,120,960 | 951,044 | 228,980 | 7,205,015 |
Decrease in short-term loans | (15,590,960) | (509,176) | (2,194,664) | (16,179,231) |
Cash payments for the principal portion of the lease liability | (666,439) | (21,765) | (712,854) | (699,680) |
Proceeds from bonds issued | 10,000,000 | 326,584 | 0 | 25,760,800 |
Bonds issuance costs | (10,755) | (351) | 0 | (57,108) |
Redemption of bonds | 0 | 0 | (13,305,050) | (2,000,000) |
Proceeds from long-term loans | 15,416,130 | 503,466 | 2,319,371 | 15,560,661 |
Repayments of long-term loans | (11,558,426) | (377,480) | (21,135,630) | (11,472,124) |
Increase in guarantee deposits | 11,651,109 | 380,506 | 15,823,396 | 14,812,963 |
Decrease in guarantee deposits | (1,227,764) | (40,097) | (838,455) | (593,555) |
Decrease in other financial liabilities | (21,209,443) | (692,666) | 0 | 0 |
Cash dividends and cash distributed from additional paid-in capital | (45,014,783) | (1,470,110) | (37,445,300) | (19,871,129) |
Change in non-controlling interests | 4,187 | 137 | 5,456 | 23,430 |
Others | 0 | 0 | 0 | 65 |
Net cash provided by (used in) financing activities | (29,086,184) | (949,908) | (57,254,750) | 12,490,107 |
Effect of exchange rate changes on cash and cash equivalents | (392,145) | (12,807) | 7,018,133 | (2,104,503) |
Net increase (decrease) in cash and cash equivalents | (41,265,162) | (1,347,654) | 41,196,646 | 38,574,095 |
Cash and cash equivalents at beginning of year | 173,818,777 | 5,676,642 | 132,622,131 | 94,048,036 |
Cash and cash equivalents at end of year | $ 132,553,615 | $ 4,328,988 | $ 173,818,777 | $ 132,622,131 |
History and Organization
History and Organization | 12 Months Ended |
Dec. 31, 2023 | |
History And Organization [Abstract] | |
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, 2023 | |
Disclosure Of Date And Procedures Of Authorization Of Financial Statements For Issue [Abstract] | |
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 24, 2024. |
New Accounting Pronouncement un
New Accounting Pronouncement under International Financial Reporting Standards (IFRSs) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of New Accounting Pronouncements Under International Financial Reporting Standards [Abstract] | |
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, 2023. There are no newly adopted or revised standards and interpretations that have material impact on the Company’s financial position and performance. (2) The Company has not adopted the following new, revised or amended IFRSs that have been issued by the IASB but not yet effective: New, Revised or Amended Standards and Interpretations Effective Date IFRS 10 “Consolidated Financial Statements” and IAS 28 “Investments in Associates and Joint Ventures” - Sale or Contribution of Assets between an Investor and its Associate or Joint Venture To be determined Amendments to IAS 1 “Presentation of Financial Statements” - Classification of Liabilities as Current or Non-current January 1, 2024 Amendments to IFRS 16 “Leases” - Lease Liability in a Sale and Leaseback January 1, 2024 Amendments to IAS 7 “Statement of Cash Flows” and IFRS 7 “Financial Instruments: Disclosures” - Supplier Finance Arrangements January 1, 2024 Amendments to IAS 21 “The Effects of Changes in Foreign Exchange Rates” - Lack of Exchangeability January 1, 2025 IFRS 18 “Presentation and Disclosure in Financial Statements” January 1, 2027 (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. Amendments to 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 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 IFRS 10 was also amended so that the gain or loss resulting from the sale or contribution of a subsidiary that does not constitute a business as defined in IFRS 3 between an investor and its associate or joint venture is recognized only to the extent of the unrelated investors’ interests in the associate or joint venture. The effective date of this amendment has been deferred indefinitely, but early adoption is allowed. b. Amendments to IAS 1 “Presentation of Financial Statements” (IAS 1) - Classification of Liabilities as Current or Non-current The 2020 amendments are the amendments to paragraphs 69-76 non-current. The 2022 amendments improved the information companies provide about long-term debt with covenants. The amendments specify that covenants to be complied within twelve months after the reporting period do not affect the classification of debt as current or non-current c. Amendments to IFRS 16 “Leases” (IFRS 16) - Lease Liability in a Sale and Leaseback The amendments add seller-lessee additional requirements for the sale and leaseback transactions in IFRS 16, thereby supporting the consistent application of the standard. d. Amendments to IAS 7 “Statement of Cash Flows” and IFRS 7 “Financial Instruments: Disclosures” - Supplier Finance Arrangements The amendments introduced additional information of supplier finance arrangements and added disclosure requirements for such arrangements. e. Amendments to IAS 21 “The Effects of Changes in Foreign Exchange Rates” - Lack of Exchangeability These amendments specify whether a currency is exchangeable into another currency and, when it is not, to determining the exchange rate to use and the disclosures to provide. The amendments apply for annual reporting periods beginning on or after January 1, 2025. f. IFRS 18 “Presentation and Disclosure in Financial Statements” The main changes in the new standard are as below: (1) Improved comparability in the statement of profit or loss (income statement) IFRS 18 requires entities to classify all income and expenses within their statement of profit or loss into one of five categories: operating; investing; financing; income taxes; and discontinued operations. The first three categories are new, to improve the structure of the income statement, and requires all entities to provide new defined subtotals, including operating profit. The improved structure and new subtotals will give investors a consistent starting point for analyzing entities’ performance and make it easier to compare entities. (2) Enhanced transparency of management-defined performance measures IFRS 18 requires entities to disclose explanations of those entity-specific measures that are related to the income statement, referred to as management-defined performance measures. (3) Useful grouping of information in the financial statements IFRS 18 sets out enhanced guidance on how to organize information and whether to provide it in the primary financial statements or in the notes. The changes are expected to provide more detailed and useful information. IFRS 18 also requires entities to provide more transparency about operating expenses, helping investors to find and understand the information they need. IFRS 18 replaces IAS 1 Presentation of Financial Statements. IFRS 18 is effective for annual reporting periods beginning on or after January 1, 2027. The Company is currently evaluating the potential impact of the aforementioned standards and interpretations listed (e) and (f) 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 Material Accounting
Summary of Material Accounting Policies | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of Summary Of Material Accounting Policies [Abstract] | |
Summary of Material Accounting Policies | 4. SUMMARY OF MATERIAL 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 shareholders 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, 2022 and 2023 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2022 2023 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED 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 KOREA CO., LTD. (UMC KOREA) 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. (USJC) Sales and manufacturing of integrated circuits 100.00 100.00 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 80.14 80.00 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 99.01 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 (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service — 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 — WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service 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 99.9985 99.9985 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) 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 71.86 100.00 (4) Business Combinations and Goodwill Business combinations are accounted for using the acquisition method. The consideration transferred, the the 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 “Financial Instruments” (IFRS 9), 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 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 loss 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 NTD 30.62 on December 29, 2023 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 (8) Current and Non-Current 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 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. 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 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 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 loss (11) 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. (12) 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 resulting in decrease in its stockholding percentage while maintaining its significant influence over that associate, the Company treats the transaction as deemed disposal and reclassifies to profit or loss or other appropriate account(s) the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest. 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. (13) Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation and accumulated impairment losses, if any. The cost of an item of property, plant and equipment comprises the acquisition cost, the costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management, and the initial estimate of costs for dismantling, removing the item and restoring the site on which it is located. 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 depreciation of the assets is calculated mainly over the following estimated useful lives: buildings - 20 to 56 years; machinery and equipment - 6 years; transportation equipment - 6 years; furniture and fixtures - 6 years; leasehold improvement - the shorter of lease terms or useful lives. (14) Lease 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 (15) 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 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 ( 5 10 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. (16) Impairment of Non-Financial The Company assesses at each reporting date whether there is an indication that an asset in the scope of IAS 36 “Impairment of Assets” 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 all |
Significant Accounting Judgment
Significant Accounting Judgments, Estimates and Assumptions | 12 Months Ended |
Dec. 31, 2023 | |
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. Actual results could differ from those estimates, and as such, differences may be material to the consolidated financial statements. (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 judgments such as the selection of comparable companies or equity transaction prices and the application of assumptions such as discounts for lack of marketability, 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(6). 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. |
Contents of Significant Account
Contents of Significant Accounts | 12 Months Ended |
Dec. 31, 2023 | |
Contents Of Significant Accounts [Abstract] | |
Contents of Significant Accounts | 6. CONTENTS OF SIGNIFICANT ACCOUNTS (1) Cash and Cash Equivalents As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Cash on hand and petty cash $ 6,023 $ 6,200 Checking and savings accounts 42,422,443 50,322,942 Time deposits 125,467,386 80,276,114 Repurchase agreements collateralized by government bonds and corporate notes 5,922,925 1,948,359 Total $ 173,818,777 $ 132,553,615 (2) Financial Assets at Fair Value through Profit or Loss As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets mandatorily measured at fair value through profit or loss Common stocks $ 10,275,563 $ 9,170,230 Preferred stocks 2,939,939 2,862,119 Funds 5,044,702 4,472,097 Convertible bonds 230,365 480,715 Others — 153,300 Total $ 18,490,569 $ 17,138,461 Current $ 705,918 $ 443,601 Non-current 17,784,651 16,694,860 Total $ 18,490,569 $ 17,138,461 (3) Financial Assets at Fair Value through Other Comprehensive Income As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Equity instruments Common stocks $ 15,007,053 $ 17,508,897 Preferred stocks 182,547 175,063 Total $ 15,189,600 $ 17,683,960 Current $ 3,213,057 $ 5,753,379 Non-current 11,976,543 11,930,581 Total $ 15,189,600 $ 17,683,960 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 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Common stock SILICON INTEGRATED SYSTEMS CORP. $ 2,316,197 $ — Common stock UNIMICRON HOLDING LIMITED 2,847,385 2,514,120 Common stock ITE TECH. INC. 1,023,266 2,100,977 Common stock CHIPBOND TECHNOLOGY CORPORATION 3,051,603 3,843,744 Common stock NOVATEK MICROELECTRONICS CORP. (NOVATEK) 5,188,267 8,501,851 Common stock SHIN-ETSU HANDOTAI TAIWAN CO., LTD. 580,335 548,205 Preferred stock MTIC HOLDINGS PTE. LTD. 182,547 175,063 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. Dividend income recognized in profit or loss from equity instruments designated as fair value through other comprehensive income were listed below: For the years 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Held at end of period $ 1,431,931 $ 1,052,336 Derecognized during the period — 142,535 Total $ 1,431,931 $ 1,194,871 Please refer to Note 6(7) for derecognition of the equity instrument investment in SILICON INTEGRATED SYSTEMS CORP. (SIS) during the period. c. The Company reclassified its equity instrument investment in SIS as investments accounted for under the equity method. Details on derecognition of such investments are as follow: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Fair value on the date of disposal $ — $ — $ 3,035,999 Cumulative gains (losses) reclassified to retained earnings due to derecognition $ — $ — $ (1,628,388 ) d. UMC issued unsecured exchangeable bonds where the bondholders may exchange the bonds at any time on or after October 8, 2021 and prior to June 27, 2026 into NOVATEK common shares which UMC holds and accounts for as equity instruments investments measured at fair value through other comprehensive income. Please refer to Note 6(13) for the Company’s unsecured exchangeable bonds. (4) Financial assets measured at amortized cost As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets measured at amortized cost Time deposits with original maturities over three months $ 849,308 $ 6,353,768 Bonds 20,000 — Total $ 869,308 $ 6,353,768 Current $ 861,817 $ 6,131,077 Non-current 7,491 222,691 Total $ 869,308 $ 6,353,768 (5) Accounts Receivable, Net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Accounts receivable $ 36,653,611 $ 29,316,612 Less: loss allowance (209,101 ) (79,062 ) Net $ 36,444,510 $ 29,237,550 Aging analysis of accounts receivable: As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Neither past due $ 30,545,437 $ 25,707,008 Past due: ≤ 30 days 5,303,765 3,008,126 31 to 60 days 130,408 78,668 61 to 90 days 3,247 5,599 91 to 120 days 7,886 — ≥ 121 days 662,868 517,211 Subtotal 6,108,174 3,609,604 Total $ 36,653,611 $ 29,316,612 Movement of loss allowance for accounts receivable: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Beginning balance $ 194,491 $ 209,101 Net recognition (reversal) for the period 14,610 (130,039 ) Ending balance $ 209,101 $ 79,062 The collection periods for third party domestic sales and month-end - - An impairment analysis is performed at each reporting date to measure expected credit losses (ECLs) of accounts receivable. For the receivables past due within 60 days, including not past due, the Company estimates an expected credit loss rate to calculate ECLs. For the years ended December 31, 2021, 2022 and 2023, the expected credit loss rates were not greater than 0.2%. The rate is determined based on the Company’s historical credit loss experience and customer’s current financial condition, adjusted for forward-looking factors such as customer’s economic environment. For the receivables past due over 60 days, the Company applies the aforementioned rate and assesses individually whether to recognize additional expected credit losses by considering customer’s operating condition and debt-paying ability. (6) Inventories, Net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Raw materials $ 6,335,428 $ 10,995,569 Supplies and spare parts 7,161,216 6,443,172 Work in process 14,897,926 15,560,517 Finished goods 2,675,390 2,713,300 Total $ 31,069,960 $ 35,712,558 a. For the years ended December 31, 2021, 2022 and 2023, the Company recognized NT$135,856 million, NT$145,979 million and NT$136,902 million, respectively, in operating costs, of which NT$426 million in 2021 was related to reversal of write-down of inventories, and NT$98 million and NT$1,148 million in 2022 and 2023, respectively, were related to write-down of inventories. b. None of the aforementioned inventories were pledged. (7) Investments Accounted for Under the Equity Method a. Details of investments accounted for under the equity method are as follows: As of December 31, 2022 2023 Investee companies Amount Percentage of Amount Percentage of NT$ NT$ (In Thousands) (In Thousands) Listed companies SILICON INTEGRATED SYSTEMS CORP. (SIS) (Note A) $ — — $ 2,373,060 19.02 FARADAY TECHNOLOGY CORP. (FARADAY) (Note B) 1,862,245 13.78 1,990,073 13.78 UNIMICRON TECHNOLOGY CORP. (UNIMICRON) (Note C) 13,285,169 13.27 13,644,560 13.05 Unlisted companies MTIC HOLDINGS PTE. LTD. (Note D) — 45.44 — 45.44 UNITECH CAPITAL INC. 426,070 42.00 625,667 42.00 TRIKNIGHT CAPITAL CORPORATION (TRIKNIGHT) (Note E) 2,117,678 40.00 2,109,906 40.00 HSUN CHIEH CAPITAL CORP. 210,690 40.00 235,098 40.00 PURIUMFIL INC. 14,622 40.00 11,474 40.00 HSUN CHIEH INVESTMENT CO., LTD. (HSUN CHIEH) (Note F) 2,980,984 36.49 4,126,878 36.49 YANN YUAN INVESTMENT CO., LTD. (YANN YUAN) 5,455,743 26.78 7,516,327 26.78 UNITED LED CORPORATION HONG KONG LIMITED 97,156 25.14 93,793 25.14 VSENSE CO., LTD. (Note D) — 23.98 — 23.98 TRANSLINK CAPITAL PARTNERS I, L.P. (Note G) 54,556 10.38 58,964 10.38 Total $ 26,504,913 $ 32,785,800 Note A: In August 2023, the board chairman of SIS changed and became the same person as the board chairman of UMC. After considering the comprehensive conditions, including ownership interest held and representation on Board of Directors of SIS, etc., the Company determines that it has significant influence over SIS and accounts for its investment in SIS as an associate. SIS was previously measured at fair value through other comprehensive income and reclassified as investments accounted for under the equity method. UMC’s share of the net fair value of SIS’s identifiable assets and liabilities was in excess of the fair value of the previously held investment in SIS at the acquisition date, and the difference was recognized as bargain purchase gain. Cumulative fair value change that was previously recognized in other comprehensive loss up to reclassification date was reclassified to retained earnings in the current period. Note B: Beginning from June 2015, the Company accounts for its investment in FARADAY as an associate given the fact that UMC obtained the ability to exercise significant influence over FARADAY through representation on its Board of Directors. Note C: Beginning from June 2020, the Company accounts for its investment in UNIMICRON as an associate given the fact that UMC obtained the ability to exercise significant influence over UNIMICRON through representation on its Board of Directors. On January 6, 2023, UNIMICRON issued new shares to merge with SUBTRON TECHNOLOGY CO., LTD. (SUBTRON) through share conversion. The share conversion ratio was 1 common share of SUBTRON to exchange 0.219 common shares of UNIMICRON. The 23 million shares of SUBTRON held by the Company were exchanged to 5 million common shares newly issued by UNIMICRON. Note D: When the Company’s share of losses of an associate equals or exceeds its interest in that associate, the Company discontinues recognizing its share of further losses. Additional losses and liabilities are recognized only to the extent that the Company has incurred legal or constructive obligations or made payments on behalf of that associate. Note E: TRIKNIGHT executed a capital reduction and refunded NT$400 million and NT$560 million based on UMC’s stockholding percentage in June and December 2023, respectively. UMC’s stockholding percentage remains unchanged. Note F: HSUN CHIEH executed a capital reduction and refunded NT$343 million based on UMC’s stockholding percentage in April 2023. UMC’s stockholding percentage remains unchanged. Note G: 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$15,147 million and NT$18,008 million, as of December 31, 2022 and 2023, respectively. The fair value of these investments were NT$28,416 million and NT$53,726 million as of December 31, 2022 and 2023, respectively. Although the Company is the largest shareholder of some associates, after comprehensive assessment, the Company does not own the major voting rights as the remaining voting rights holders are able to align and prevent the Company from ruling the relevant operation. Therefore, the Company does not control but ha None of the aforementioned associates were pledged. b. Financial information of associates: There is no individually significant associate for the Company. When an associate is a foreign operation, and the functional currency of the foreign entity is different from the Company, an exchange difference arising from translation of the foreign entity will be recognized in other comprehensive income (loss). Such exchange differences recognized in other comprehensive income (loss) in the financial statements for the years ended December 31, 2021, 2022 and 2023 were NT$(30) million, NT$103 million and NT$(3) million, respectively, which were not included in the following table. The aggregate amount of the Company’s share of all its individually immaterial associates that are accounted for using the equity method were as follows: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Profit from continuing operations $ 5,193,495 $ 1,626,103 $ 4,307,614 Other comprehensive income (loss) 2,965,202 (1,706,960 ) 1,540,436 Total comprehensive income (loss) $ 8,158,697 $ (80,857 ) $ 5,848,050 (8) Property, Plant and Equipment a. 2022 Assets Used by the Company: 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, 2022 $ 1,491,343 $ 36,827,480 $ 897,806,699 $ 55,959 $ 7,305,174 $ 61,282 $ 22,856,033 $ 966,403,970 Additions — 325,943 — — — — 72,270,938 72,596,881 Disposals — (69,897 ) (6,391,003 ) — (27,782 ) (2,414 ) (69,640 ) (6,560,736 ) Transfers and reclassifications — 219,666 46,548,734 8,154 730,317 421 (39,772,778 ) 7,734,514 Exchange effect (21,127 ) 294,577 15,855,258 810 54,284 3,786 79,390 16,266,978 As of December 31, $ 1,470,216 $ 37,597,769 $ 953,819,688 $ 64,923 $ 8,061,993 $ 63,075 $ 55,363,943 $ 1,056,441,607 Accumulated Depreciation and Impairment: 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, 2022 $ — $ 21,184,969 $ 810,904,881 $ 47,108 $ 6,222,383 $ 55,125 $ — $ 838,414,466 Depreciation — 1,443,545 38,565,229 3,946 456,017 2,816 — 40,471,553 Disposals — (69,489 ) (6,331,532 ) — (27,421 ) (2,404 ) — (6,430,846 ) Transfers and reclassifications — 161 (4,913 ) — (176 ) — — (4,928 ) Exchange effect — 172,320 14,604,120 543 46,714 3,846 — 14,827,543 As of December 31, 2022 $ — $ 22,731,506 $ 857,737,785 $ 51,597 $ 6,697,517 $ 59,383 $ — $ 887,277,788 Net carrying amount: As of December 31, 2022 $ 1,470,216 $ 14,866,263 $ 96,081,903 $ 13,326 $ 1,364,476 $ 3,692 $ 55,363,943 $ 169,163,819 Assets Subject to Operating Leases: 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, 2022 $ 549,010 $ 2,422,389 $ — $ 1,312,703 $ 4,284,102 Disposals — — — (660 ) (660 ) Transfers and reclassifications — (1,226 ) 6,345 15,562 20,681 Exchange effect (3,223 ) 22,084 — 6,686 25,547 As of December 31, 2022 $ 545,787 $ 2,443,247 $ 6,345 $ 1,334,291 $ 4,329,670 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, 2022 $ — $ 1,095,113 $ — $ 1,236,790 $ 2,331,903 Depreciation — 94,644 — 60,229 154,873 Disposals — — — (660 ) (660 ) Transfers and reclassifications — (161 ) 6,345 211 6,395 Exchange effect — 13,216 — 5,696 18,912 As of December 31, 2022 $ — $ 1,202,812 $ 6,345 $ 1,302,266 $ 2,511,423 Net carrying amount: As of December 31, 2022 $ 545,787 $ 1,240,435 $ — $ 32,025 $ 1,818,247 b. 2023 Assets Used by the Company: 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, 2023 $ 1,470,216 $ 37,597,769 $ 953,819,688 $ 64,923 $ 8,061,993 $ 63,075 $ 55,363,943 $ 1,056,441,607 Additions — 223,177 — — — — 82,213,765 82,436,942 Disposals — (12,160 ) (6,475,636 ) — (112,396 ) — (33,581 ) (6,633,773 ) Transfers a — 902,122 77,170,979 7,104 953,582 3,379 (54,194,544 ) 24,842,622 Exchange effect (39,878 ) (341,045 ) (3,016,210 ) (315 ) (29,711 ) (631 ) (990,932 ) (4,418,722 ) As of December 31, 2023 $ 1,430,338 $ 38,369,863 $ 1,021,498,821 $ 71,712 $ 8,873,468 $ 65,823 $ 82,358,651 $ 1,152,668,676 Accumulated Depreciation and Impairment: 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, 2023 $ — $ 22,731,506 $ 857,737,785 $ 51,597 $ 6,697,517 $ 59,383 $ — $ 887,277,788 Depreciation — 1,416,727 35,031,869 4,924 490,468 4,149 — 36,948,137 Disposals — (12,160 ) (6,468,067 ) — (112,330 ) — — (6,592,557 ) Exchange effect — (107,933 ) (2,212,913 ) (264 ) (19,642 ) (494 ) — (2,341,246 ) As of December 31, 2023 $ — $ 24,028,140 $ 884,088,674 $ 56,257 $ 7,056,013 $ 63,038 $ — $ 915,292,122 Net carrying amount: As of December 31, 2023 $ 1,430,338 $ 14,341,723 $ 137,410,147 $ 15,455 $ 1,817,455 $ 2,785 $ 82,358,651 $ 237,376,554 Assets Subject to Operating Leases: 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, 2023 $ 545,787 $ 2,443,247 $ 6,345 $ 1,334,291 $ 4,329,670 Transfers and reclassifications — — — 54,469 54,469 Exchange effect (6,084 ) (2,330 ) — (3,020 ) (11,434 ) As of December 31, 2023 $ 539,703 $ 2,440,917 $ 6,345 $ 1,385,740 $ 4,372,705 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, 2023 $ — $ 1,202,812 $ 6,345 $ 1,302,266 $ 2,511,423 Depreciation — 94,944 — 23,395 118,339 Exchange effect — (688 ) — (3,063 ) (3,751 ) As of December 31, 2023 $ — $ 1,297,068 $ 6,345 $ 1,322,598 $ 2,626,011 Net carrying amount: As of December 31, 2023 $ 539,703 $ 1,143,849 $ — $ 63,142 $ 1,746,694 c. Details of interest expense capitalized were as follows: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Interest expense capitalized $ 1,661 $ 9,355 Interest rates applied 1.44% - 1.61% 1.48% - 1.65% d. Please refer to Note 8 for property, plant and equipment pledged as collateral. (9) 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 31 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 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Land (including land use right) $ 5,714,166 $ 5,318,986 Buildings 124,420 156,483 Machinery and equipment 1,748,244 1,506,824 Transportation equipment 21,485 16,356 Other equipment 3,676 1,706 Net $ 7,611,991 $ 7,000,355 For the years ended December 31, 2022 2023 NT$ NT$ Depreciation (In Thousands) (In Thousands) Land (including land use right) $ 359,007 $ 377,593 Buildings 119,641 93,610 Machinery and equipment 206,445 203,606 Transportation equipment 12,287 13,267 Other equipment 4,568 3,004 Total $ 701,948 $ 691,080 i. For the years ended December 31, 2022 and 2023, the Company’s addition to right-of-use ii. Please refer to Note 8 for right-of-use (b) Lease Liabilities As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Current $ 537,314 $ 514,324 Non-current 5,199,781 4,878,863 Total $ 5,737,095 $ 5,393,187 Please refer to Note 6(24) 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(8) for relevant disclosure of property, plant and equipment for operating leases. (10) Intangible Assets 2022 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, 2022 $ 15,012 $ 4,845,037 $ 4,491,164 $ 3,348,071 $ 12,699,284 Additions — 2,713,534 — 480,880 3,194,414 Write-off — (1,857,289 ) (1,344,682 ) (869,940 ) (4,071,911 ) Reclassifications — (10,721 ) — — (10,721 ) Exchange effect — (20,774 ) 275,950 (5,027 ) 250,149 As of December 31, 2022 $ 15,012 $ 5,669,787 $ 3,422,432 $ 2,953,984 $ 12,061,215 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, 2022 $ 7,398 $ 2,913,824 $ 3,324,667 $ 2,808,462 $ 9,054,351 Amortization — 1,656,765 475,870 556,965 2,689,600 Write-off — (1,857,289 ) (1,344,682 ) (869,940 ) (4,071,911 ) Exchange effect — (23,903 ) 141,658 (3,780 ) 113,975 As of December 31, 2022 $ 7,398 $ 2,689,397 $ 2,597,513 $ 2,491,707 $ 7,786,015 Net carrying amount: As of December 31, 2022 $ 7,614 $ 2,980,390 $ 824,919 $ 462,277 $ 4,275,200 2023 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, 2023 $ 15,012 $ 5,669,787 $ 3,422,432 $ 2,953,984 $ 12,061,215 Additions — 1,399,699 346,896 999,510 2,746,105 Write-off — (1,498,642 ) (1,826,383 ) (632,860 ) (3,957,885 ) Reclassifications — (5,855 ) — — (5,855 ) Exchange effect — (98,912 ) (169,404 ) (9,993 ) (278,309 ) As of December 31, 2023 $ 15,012 $ 5,466,077 $ 1,773,541 $ 3,310,641 $ 10,565,271 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, 2023 $ 7,398 $ 2,689,397 $ 2,597,513 $ 2,491,707 $ 7,786,015 Amortization — 1,741,898 277,768 535,944 2,555,610 Write-off — (1,498,642 ) (1,826,383 ) (632,860 ) (3,957,885 ) Exchange effect — (41,822 ) (139,933 ) (9,269 ) (191,024 ) As of December 31, 2023 $ 7,398 $ 2,890,831 $ 908,965 $ 2,385,522 $ 6,192,716 Net carrying amount: As of December 31, 2023 $ 7,614 $ 2,575,246 $ 864,576 $ 925,119 $ 4,372,555 The amortization amounts of intangible assets were as follows: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Operating costs $ 1,329,850 $ 1,144,960 Operating expenses $ 1,359,750 $ 1,410,650 (11) Short-Term Loans As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Unsecured bank loans $ — $ 13,530,000 As of December 31, 2022 2023 Interest rates applied — 1.69% - 2.65% (12) Financial Liabilities at Fair Value through Profit or Loss, Current As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Embedded derivatives in exchangeable bonds $ 438,397 $ 1,019,362 (13) Bonds Payable As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Unsecured domestic bonds payable $ 23,100,000 $ 33,100,000 Unsecured exchangeable bonds payable 5,757,373 5,757,373 Less: Discounts on bonds payable (672,686 ) (498,021 ) Total 28,184,687 38,359,352 Less: Current or exchangeable portion due within one year (5,101,591 ) (13,779,701 ) Net $ 23,083,096 $ 24,579,651 a. UMC issued domestic unsecured corporate bonds. The terms and conditions of the bonds are as follows: Term Issuance date Issued amount Coupon rate Repayment 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 was paid annually and the principal was fully repaid in March 2022. 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 was paid annually and the principal was fully repaid in October 2022. 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. Five-year In late April 2021 NT$5,500 million 0.57% Interest will be paid annually and the principal will be repayable in April 2026 upon maturity. Seven-year In late April 2021 NT$2,000 million 0.63% Interest will be paid annually and the principal will be repayable in April 2028 upon maturity. Ten-year In late April 2021 NT$2,100 million 0.68% Interest will be paid annually and the principal will be repayable in April 2031 upon maturity. Five-year In mid-December NT$5,000 million 0.63% Interest will be paid annually and the principal will be repayable in December 2026 upon maturity. Five-year (Green bond) In mid-September 2023 NT$10,000 million 1.62% Interest will be paid annually and the principal will be repayable in September 2028 upon maturity. b. On July 7, 2021, UMC issued SGX-ST i. Issue Amount: US$400 million ii. Period: July 7, 2021 - July 7, 2026 (Maturity Date) iii. Redemption: (i) UMC may, at its option, redeem in whole or in part at the principal amount of the bonds with an interest calculated at the rate of -0.625% (ii) UMC may redeem the outstanding bonds in whole, but not in part, at the Early Redemption Amount, in the event that over 90% of the bonds have been previously redeemed, repurchased and cancelled or exchanged. (iii) In the event of any change in ROC taxation resulting in increase of tax obligation or the necessity to pay additional interest expense or increase of additional costs to UMC, UMC may redeem the outstanding bonds in whole, but not in part, at the Early Redemption Amount. Bondholders may elect not to have their bonds redeemed but with no entitlement to any additional amounts or reimbursement of additional taxes. (iv) All or any portion of the bonds will be redeemable at put price at the option of bondholders on July 7, 2024 at 98.14% of the principal amount. (v) In the event that the common shares of NOVATEK cease to be listed or are suspended from trading for a period equal to or exceeding 30 consecutive trading days on the TWSE, each bondholder shall have the right to require UMC to redeem the bonds, in whole but not in part, at the Early Redemption Amount. (vi) Upon the occurrence of a change of control (as defined in the indenture) of UMC, each bondholder 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 Exchange: (i) Underlying Securities: Common Shares of NOVATEK (ii) Exchange Period: The bonds are exchangeable at any time on or after October 8, 2021 and prior to June 27, 2026, into NOVATEK common shares. If for any reason UMC does not have sufficient NOVATEK common shares to deliver upon the exchange of any bond, then, UMC will pay to the exchanging bondholder an amount in U.S. dollars equal to the product of the volume-weighted average closing price per NOVATEK common share on the TWSE for five consecutive trading days starting from and including the applicable exercise date (as defined in the indenture) (or such fewer number of trading days as are available within ten days starting from and including the applicable exercise date) each converted into USD at the prevailing rate on the day preceding the applicable trading day and the number of NOVATEK common shares that UMC is unable to deliver. 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) Exchange Price and Adjustment: The exchange price was originally NT$731.25 per NOVATEK common share. The exchange price will be subject to adjustments upon the occurrence of certain events set out in the indenture. The exchange price was NT$533.8 per NOVATEK common share on December 31, 2023. v. Redemption on the Maturity Date: The (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 exchange right before maturity, or (iii) The bonds shall have been redeemed or repurchased by UMC and cancelled. For the years ended December 31, 2022 and 2023, UMC has repurchased and cancelled the outstanding principal amount of exchangeable bonds totaling US$187.1 million and nil with derecognition of the related derivative financial liabilities, respectively. The difference between the repurchased amount and the carrying amount recognized in non-operating (14) Long-Term Loans a. Details of long-term loans as of December 31, 2022 and 2023 were as follows: As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Secured Long-Term Loan from Mega International Commercial Bank (1) $ 9,732 $ 4,866 Repayable quarterly from October 24, 2019 to October 24, 2024 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Mega International Commercial Bank (2) 18,000 13,765 Repayable quarterly from February 23, 2022 to February 22, 2027 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Mega International Commercial Bank (3) 60,500 46,265 Repayable quarterly from December 22, 2022 to February 23, 2027 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Taiwan Cooperative Bank (1) 35,676 23,784 Repayable quarterly from October 19, 2015 to October 19, 2025 with monthly interest payments. Interest-only payment for the first year. As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Secured Long-Term Loan from Taiwan Cooperative Bank (2) 4,375 — Repayable monthly from May 31, 2019 to May 31, 2023 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (3) 32,000 20,000 Repayable monthly from August 13, 2020 to August 13, 2025 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (4) 16,552 10,345 Repayable monthly from October 29, 2020 to August 29, 2025 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (5) 84,166 58,916 Repayable monthly from April 15, 2021 to April 15, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Taiwan Cooperative Bank (6) — 34,400 Repayable quarterly from December 28, 2023 to December 28, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Syndicated Loans from China Development Bank and 6 others (1) 1,915,577 — Repayable semi-annually from October 20, 2016 to October 19, 2024 with semi-annually interest payments. Interest-only payment for the first and the second year. Secured Syndicated Loans from China Development Bank and 6 others (2) 12,415,200 11,766,832 Repayable semi-annually from March 19, 2021 to March 18, 2031 with semi-annually interest payments. Interest-only payment for the first and the second year. Secured Long-Term Loan from First Commercial Bank 47,000 35,668 Repayable monthly from December 2, 2021 to December 2, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from KGI Bank 21,000 21,000 Settlement due on December 25, 2026 with monthly interest payments. Secured Long-Term Loan from Shanghai Commercial Bank (1) 22,200 16,650 Repayable monthly from January 19, 2022 to December 15, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Shanghai Commercial Bank (2) — 4,980 Repayable quarterly from March 23, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Shanghai Commercial Bank (3) — 45,000 Repayable quarterly from June 6, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from CTBC Bank — 131,750 Repayable semi-annually from September 25, 2023 to September 25, 2028 with monthly interest payments. Interest-only payment for the first and the second year. Unsecured Long-Term Loan from Bank of China 1,797,364 1,515,790 Repayable semi-annually from June 24, 2023 to June 24, 2026 with quarterly interest payments. Unsecured Long-Term Loan from Bank of Taiwan 2,000,000 1,333,333 Repayable quarterly from March 24, 2023 to December 24, 2025 with monthly interest payments. Unsecured Revolving Loan from First Commercial Bank (1) (Note A) 300,000 — Settlement due on February 25, 2026 with monthly interest payments. As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Unsecured Revolving Loan from First Commercial Bank (2) (Note A) 300,000 — Settlement due on March 15, 2026 with monthly interest Unsecured Revolving Loan from First Commercial Bank (3) (Note A) 200,000 — Settlement due on June |
Significant Related Party Trans
Significant Related Party Transactions | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of transactions between related parties [abstract] | |
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, 2021 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 48,440,369 Net 60 days UMC UMC-USA Accounts receivable 6,286,428 — UMC USCXM Sales 1,222,320 (Note C ) Net 30 days UMC USCXM Accounts receivable 29,012 — UMC UDS Sales 178,331 Net 30 days UMC UDS Accounts receivable 18,818 — USJC UMC-USA Sales 2,917,993 Net 60 days USJC UMC-USA Accounts receivable 428,363 — USCXM UMC-USA Sales 1,444,736 Net 60 days USCXM UMC-USA Accounts receivable 221,375 — WAVETEK UMC-USA Sales 545,785 Net 60 days WAVETEK UMC-USA Accounts receivable 126,580 — WAVETEK UMC Sales 110,620 Month-end HJ UMC-USA Sales 366,968 Net 60 days HJ UMC-USA Accounts receivable 60,147 — For the year ended December 31, 2022 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 68,554,072 Net 60 days UMC UMC-USA Accounts receivable 9,502,922 — UMC USCXM Sales 1,143,280 (Note C ) Net 30 days UMC USCXM Accounts receivable 16,774 — UMC UDS Sales 656,472 Net 30 days UMC UDS Accounts receivable 6,734 — UMC USJC Sales 164,855 Net 60 days UMC USJC Accounts receivable 151,430 — USJC UMC-USA Sales 4,272,900 Net 60 days USJC UMC-USA Accounts receivable 744,082 — USCXM UMC-USA Sales 1,565,670 Net 60 days USCXM UMC-USA Accounts receivable 310,431 — USCXM UMC Sales 1,035,407 Net 30 days USCXM UMC Accounts receivable 173 — USCXM UDS Sales 148,259 Month-end USCXM UDS Accounts receivable 171 — WAVETEK UMC-USA Sales 716,357 Net 60 days WAVETEK UMC-USA Accounts receivable 81,819 — WAVETEK UMC Sales 124,178 Month-end HJ UMC-USA Sales 551,913 Net 60 days HJ UMC-USA Accounts receivable 147,265 — HJ UDS Sales 311,972 Month-end HJ UDS Accounts receivable 9,500 — For the year ended December 31, 2023 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 61,923,652 Net 60 days UMC UMC-USA Accounts receivable 5,827,800 — UMC USCXM Sales 1,127,275 (Note C ) Net 30 days UMC USCXM Accounts receivable 11,688 — UMC UDS Sales 364,948 Net 30 days UMC UDS Accounts receivable 10,800 — USJC UMC-USA Sales 3,487,292 Net 60 days USJC UMC-USA Accounts receivable 342,835 — USCXM UMC-USA Sales 1,208,630 Net 60 days USCXM UMC-USA Accounts receivable 17,816 — USCXM UMC Sales 134,303 Net 30 days USCXM UDS Sales 286,087 Month-end USCXM UDS Accounts receivable 362 — WAVETEK UMC-USA Sales 505,806 Net 60 days WAVETEK UMC-USA Accounts receivable 53,916 — HJ UMC-USA Sales 384,067 Net 60 days HJ UMC-USA Accounts receivable 43,863 — HJ UDS Sales 159,523 Month-end HJ UDS Accounts receivable 2,696 — Note A: The significant intercompany transactions listed above include downstream and upstream 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$0.35 billion, which was recognized as deferred revenue to be realized over time. b. Significant transactions between the Company and other related parties were as follows: (i) Name and Relationship of Related Parties Name of related parties Relationship with the Company FARADAY TECHNOLOGY CORP. and its Subsidiaries Associate UNIMICRON TECHNOLOGY CORP. Associate SILICON INTEGRATED SYSTEMS CORP. Associate (Note) PHOTRONICS DNP MASK CORPORATION Other related party XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. Directors and supervisors of subsidiaries FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP Directors of subsidiaries Note: Prior to August 2023, SIS held one board seat on UMC’s Board of Directors. Therefore, SIS was classified as other related party. Beginning from August 2023, the Company determines that it has significant influence over SIS and accounts for its investment in SIS as an associate. Please refer to Note 6(7) for the relevant information. (ii) Operating revenues For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 2,778,544 $ 5,744,098 $ 3,018,171 Other related party 38,797 40,474 4,463 Total $ 2,817,341 $ 5,784,572 $ 3,022,634 (iii) Accounts receivable, net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Associates FARADAY TECHNOLOGY CORP. and its Subsidiaries FARADAY TECHNOLOGY CORP. $ 441,963 $ 302,828 ARTERY TECHNOLOGY CORPORATION, LTD. 56,864 40,886 Others 30,698 3,602 Other associates — 648 Other related party 1,052 — Total $ 530,577 $ 347,964 The sales price to the above related parties was determined through mutual agreement in reference to market conditions. The collection periods for domestic sales to related parties were month-end 30 60 month-end 30 60 (iv) Refund liabilities (classified under other current liabilities) As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Associates $ 1,545 $ 636 Other related party 7 — Total $ 1,552 $ 636 (v) Significant asset transactions Acquisition of financial assets at fair value through profit or loss, noncurrent For the year ended December 31, 2021: Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 82 Stock of ARTERY TECHNOLOGY CORPORATION $ 13,929 For the years ended December 31, 2022 and 2023: None. Acquisition of subsidiaries’ ownership For the years ended December 31, 2021 and 2022: None. For the year ended December 31, 2023: Trading Capital Amount Transaction underlying Purchase price RMB¥ NT$ (In Thousands) (In Thousands) XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. 3,741,862 Ownership of $ 17,945,970 FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP 674,762 Ownership of 3,263,473 Total 4,416,624 $ 21,209,443 Please refer to Note 9(6) for the relevant information. Acquisition of investments accounted for under the equity method For the years ended December 31, 2021 and 2022: None. For the year ended December 31, 2023: Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 4,945 Stock of $ 608,224 Please refer to Note 6(7) for the relevant information. Acquisition of intangible assets Purchase price For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) FARADAY TECHNOLOGY CORP. $ 181,254 $ 266,053 $ 323,551 (vi) Others Mask expenditure For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Other related party $ 1,861,438 $ 2,581,409 $ 2,375,225 Other payables of mask expenditure As of December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Other related party $ 560,042 $ 812,185 $ 751,763 c. Key management personnel compensation For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Short-term employee benefits $ 562,117 $ 2,047,118 $ 1,462,964 Post-employment benefits 2,322 2,782 2,732 Share-based payment 1,035,401 719,786 500,391 Others 578 649 618 Total $ 1,600,418 $ 2,770,335 $ 1,966,705 |
Assets Pledged as Collateral
Assets Pledged as Collateral | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of Assets Pledged As Collateral [Abstract] | |
Assets Pledged as Collateral | 8. ASSETS PLEDGED AS COLLATERAL The following table lists assets of the Company pledged as collateral: As of December 31, 2022 2023 Party to which asset(s) was pledged Purpose of pledge NT$ NT$ (In Thousands) (In Thousands) Refundable Deposits (Time deposit) $ 812,248 $ 813,289 Customs Customs duty guarantee Refundable Deposits (Time deposit) 236,587 236,556 Science Park Bureau Collateral for land lease Refundable Deposits (Time deposit) 29,371 18,647 Science Park Bureau Collateral for dormitory lease Refundable Deposits (Time deposit) 64,950 64,950 National Property Administration, Ministry of Finance Guarantee for the application of national non-public Refundable Deposits (Time deposit) 8,118 8,118 Bureau of Land Administration, Tainan City Government Guarantee for the application of national non-public Refundable Deposits (Time deposit) 34,100 36,970 Liquefied Natural Gas Business Division, CPC Corporation, Taiwan Energy resources guarantee Refundable Deposits (Time deposit) 1,043,840 1,006,852 Bank of China and Agricultural Bank of China Bank performance guarantee Refundable Deposits (Time deposit) 459,750 459,900 CTBC Bank Singapore Branch Collateral for letter of credit Buildings 4,828,597 4,487,730 Taiwan Cooperative Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Machinery and equipment 14,066,044 6,627,761 Taiwan Cooperative Bank, Mega International Commercial Bank, KGI Bank, First Commercial Bank, Shanghai Commercial Bank, CTBC Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Transportation equipment 592 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Furniture and fixtures 46,823 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Right-of-use 278,230 266,650 Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Total $ 21,909,250 $ 14,027,423 |
Significant Contingencies and U
Significant Contingencies and Unrecognized Contract Commitments | 12 Months Ended |
Dec. 31, 2023 | |
Significant Contingencies And Unrecognized Contract Commitments [Abstract] | |
Significant Contingencies and Unrecognized Contract Commitments | 9. SIGNIFICANT CONTINGENCIES AND UNRECOGNIZED CONTRACT COMMITMENTS (1) As of December 31, 2023, amounts available under unused letters of credit were NT$33.2 billion. (2) As of December 31, 2023, the Company entrusted financial institutions to open performance guarantee, mainly related to the litigations, electricity supply and customs tax guarantee, amounting to NT$2.2 billion. (3) The Company entered into several patent license agreements and development contracts of intellectual property for a total contract amount of approximately NT$3.8 billion. As of December 31, 2023, the portion of royalties and development fees not yet recognized was NT$1.2 billion. (4) The Company entered into several construction contracts for the expansion of its operations. As of December 31, 2023, these construction contracts amounted to approximately NT$70.6 billion and the portion of the contracts not yet recognized was approximately NT$38.4 billion. (5) The Company entered into several wafer fabrication contracts with its customers. According to the contracts, the Company shall provide agreed production capacity with the customers. (6) The Board of Directors of UMC resolved in October 2014 to participate in a 3-way non-controlling non-controlling non-controlling On April 27, 2022, the Board of Directors of UMC approved an investment to increase capital of RMB¥4.12 billion or equivalent US dollars (approximately US$0.66 billion) in its Cayman Islands subsidiary, UNITED MICROCHIP CORPORATION, for its Samoa subsidiary, GE, to purchase the shares of USCXM from XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. In addition, the Company’s subsidiary, HJ, plans to purchase shares of USCXM with RMB¥0.74 billion or equivalent US dollars (approximately US$0.12 billion) from FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP. As a result, the total investment amount is RMB¥4.9 billion. The transaction was completed all at once in July, 2023. (7) 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) and of MICRON MEMORY TAIWAN CO., LTD. On June 12, 2020, an adverse ruling issued by the District Court of Taichung in a suit alleged that UMC, two of its current employees and a former employee engaged in the misappropriation of trade secrets. UMC appealed against the sentence. On November 26, 2021, UMC and MICRON announced a settlement agreement between the two companies for all legal proceedings worldwide (the “Settlement Agreement”). Accordingly, MICRON submitted a motion to withdraw the case. On January 27, 2022, the Intellectual Property and Commercial Court announced its ruling of this case and UMC was sentenced to a fine of NT$20 million, subject to a two-year 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. In accordance with the Settlement Agreement, the court issued a dismissal of the case with prejudice in January 2022. 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 question, and 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 approved withdrawal of one of the patent infringement actions on our motion while the other two actions are still on trial. In accordance with the Settlement Agreement, UMC submitted a motion to withdraw the case and the application for injunctive procedure. On March 28, 2024, the court approved UMC’s withdrawal of actions and the application for injunctive procedure. The amounts of aforementioned fine from ruling of the Intellectual Property and Commercial Court and the worldwide settlement between UMC and MICRON were recorded in non-operating |
Significant Subsequent Events
Significant Subsequent Events | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of non-adjusting events after reporting period [abstract] | |
Significant Subsequent Events | 10. SIGNIFICANT SUBSEQUENT EVENTS (1) On January 25, 2024, UMC and INTEL CORPORATION (INTEL) announced to collaborate on the development of a 12-nanometer semiconductor process platform to address high-growth markets such as mobile, communication infrastructure and networking. The long-term agreement brings together INTEL’s at-scale U.S. manufacturing capacity and UMC’s extensive foundry experience on mature nodes to enable an expanded process portfolio. It also offers global customers greater choice in their sourcing decisions with access to a more geographically diversified and resilient supply chain. (2) On February 27, 2024, the Board of Directors of UMC approved to participate in the capital increase of the Company’s subsidiary, UMC CAPITAL CORP., and UMC has completed the investment in the amount of million in April 2024. (3) On February 27, 2024, the Board of Directors of the Company’s subsidiary, UMC CAPITAL CORP., approved an investment in 7V AI CAPITAL LLC, with amount not more than US$20 million. |
Financial Risk and Fair Value D
Financial Risk and Fair Value Disclosures | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of detailed information about financial instruments [abstract] | |
Financial Risk and Fair Value Disclosures | 11. FINANCIAL RISK AND FAIR VALUE DISCLOSURES (1) Categories of financial instruments As of December 31, Financial Assets 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets at fair value through profit or loss $ 18,490,569 $ 17,138,461 Financial assets at fair value through other comprehensive income 15,189,600 17,683,960 Financial assets measured at amortized cost Cash and cash equivalents (cash on hand excluded) 173,812,754 132,547,415 Receivables 38,783,086 32,292,914 Refundable deposits 2,749,691 2,708,823 Other financial assets 869,308 6,353,768 Total $ 249,895,008 $ 208,725,341 As of December 31, Financial Liabilities 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial liabilities at fair value through profit or loss $ 438,397 $ 1,019,362 Financial liabilities measured at amortized cost Short-term loans — 13,530,000 Payables 58,893,871 52,393,399 Guarantee deposits (current portion included) 30,757,001 41,599,386 Bonds payable (current portion included) 28,184,687 38,359,352 Long-term loans (current portion included) 19,279,342 22,883,344 Lease liabilities 5,737,095 5,393,187 Other financial liabilities 21,449,487 — Total $ 164,739,880 $ 175,178,030 (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. Furthermore, as net investments in foreign subsidiaries are for strategic purposes, they are not hedged by the Company. 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, 2021, 2022 and 2023 decreases/increases by NT$1,104 million, NT$1,305 million and NT$620 million, respectively. When RMB strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2021, 2022 and 2023 increases/decreases by NT$375 million and decreases/increases by NT$572 million, NT$582 million, respectively. When JPY strengthens/weakens against USD by 10%, the profit for the years ended December 31, 2021, 2022 and 2023 decreases/increases by NT$434 million, NT$538 million and NT$290 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(11), (13) and (14) 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, 2021, 2022 and 2023 to decrease/increase by NT$39 million, NT$19 million and NT$36 million, respectively. Equity price risk The Company’s listed and unlisted equity securities, investments in convertible bonds and exchange right of the exchangeable bonds issued 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 investments in convertible bonds which contain the right of conversion to equity instruments are classified as financial assets at fair value through profit or loss, and the exchange right of the exchangeable bonds issued is classified as financial liabilities at fair value through profit or loss as it does not satisfy the definition of an equity component. Please refer to Note 6(2), (3) and (12) for the relevant information. 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, 2021, 2022 and 2023 by NT$393 million, NT$285 million and NT$270 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 (loss) for the years ended December 31, 2021, 2022 and 2023 by NT$867 million, NT$579 million and NT$722 million, respectively. Please refer to Note 11(7) for sensitivity analysis information of other equity instruments or derivatives that are linked to such equity instruments whose fair value measurement is categorized under Level 3. (4) Credit risk management The Company only trades with approved and creditworthy third parties. Where the Company trades with third parties which have less credit, it will request collateral from them. It is the Company’s policy that all customers who wish to trade on credit terms are subject to credit verification procedures. In addition, notes and accounts receivable balances are monitored on an ongoing basis to decrease the Company’s exposure to credit risk. The Company mitigates the credit risks from financial institutions by limiting its counter parties to only reputable domestic or international financial institutions with good credit standing and spreading its holdings among various financial institutions. The Company’s exposure to credit risk arising from the default of counter-parties is limited to the carrying amount of these instruments. As of December 31, 2022 and 2023, accounts receivable from the top ten customers represent 56% and 67% of the total accounts receivable of the Company, respectively. The credit concentration risk of other accounts receivable is insignificant. (5) Liquidity risk management The Company’s objectives are to maintain a balance between continuity of funding and flexibility through the use of cash and cash equivalents, bank loans, bonds and lease. The table below summarizes the maturity profile of the Company’s financial liabilities based on the contractual undiscounted payments and contractual maturity: As of December 31, 2022 Less than 2 to 3 4 to 5 > 5 years Total NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Non-derivative Payables $ 58,767,584 $ — $ — $ — $ 58,767,584 Guarantee deposits 238,416 3,867,087 169,419 26,482,079 30,757,001 Bonds payable (Note) 322,155 8,742,481 10,593,656 4,151,128 23,809,420 Long-term loans 3,246,153 8,425,744 7,798,280 3,031,293 22,501,470 Lease liabilities 658,092 1,222,822 1,207,385 4,299,914 7,388,213 Other financial liabilities 17,233,129 4,308,513 — — 21,541,642 Total $ 80,465,529 $ 26,566,647 $ 19,768,740 $ 37,964,414 $ 164,765,330 As of December 31, 2023 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 $ 13,780,612 $ — $ — $ — $ 13,780,612 Payables 52,202,821 — — — 52,202,821 Guarantee deposits 1,476,430 3,556,179 25,955,654 10,611,123 41,599,386 Bonds payable (Note) 14,797,772 10,980,506 12,321,345 2,132,963 40,232,586 Long-term loans 2,872,168 14,406,101 5,071,743 2,940,524 25,290,536 Lease liabilities 649,879 1,311,239 1,223,724 3,712,729 6,897,571 Total $ 85,779,682 $ 30,254,025 $ 44,572,466 $ 19,397,339 $ 180,003,512 Note: UMC issued unsecured exchangeable bonds where the bondholders may exchange the bonds at any time on or after October 8, 2021 and prior to June 27, 2026 into NOVATEK common shares which UMC holds and accounts for as equity instruments investments measured at fair value through other comprehensive income. The balances of equity instruments investments measured at fair value through other comprehensive income were NT$3,213 million and NT$5,753 million as of December 31, 2022 and 2023, respectively. All or any portion of the bonds will be redeemable at put price at the option of bondholders on July 7, 2024 at 98.14% of the principal amount. (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. As of December 31, 2022 and 2023, all of these contracts have been settled. (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, 2022 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 $ 669,444 $ — $ 36,474 $ 705,918 Financial assets at fair value through profit or loss, noncurrent 6,626,088 468,164 10,690,399 17,784,651 Financial assets at fair value through other comprehensive income, current 3,213,057 — — 3,213,057 Financial assets at fair value through other comprehensive income, noncurrent 8,366,276 — 3,610,267 11,976,543 Financial liabilities: Financial liabilities at fair value through profit or loss, current — — 438,397 438,397 As of December 31, 2023 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 $ 443,601 $ — $ — $ 443,601 Financial assets at fair value through profit or loss, noncurrent 6,424,475 19,300 10,251,085 16,694,860 Financial assets at fair value through other comprehensive income, current 5,753,379 — — 5,753,379 Financial assets at fair value through other comprehensive income, noncurrent 8,693,193 — 3,237,388 11,930,581 Financial liabilities: Financial liabilities at fair value through profit or loss, current — — 1,019,362 1,019,362 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 year ended December 31, 2022, there was no transfers between Level 1 and Level 2 fair value measurements. During the year ended December 31, 2023, as the private placement ordinary shares held by the Company’s subsidiary became publicly listed on the over-the-counter Reconciliation 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 Convertible bonds 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, 2022 $ 3,584,326 $ 2,580,246 $ 3,464,652 $ 234,936 $ 9,864,160 $ 2,351,603 $ 151,859 $ 2,503,462 Recognized in profit (loss) (150,786 ) (328,602 ) 519,572 (53,225 ) (13,041 ) — — — Recognized in other comprehensive income (loss) — — — — — 1,076,117 30,688 1,106,805 Acquisition 192,258 485,256 625,542 — 1,303,056 — — — Disposal (186,579 ) (15,782 ) (194,572 ) (149,850 ) (546,783 ) — — — Return of capital — — (26,672 ) — (26,672 ) — — — Transfer out of Level 3 (326,577 ) — — — (326,577 ) — — — Exchange effect 86,166 144,140 237,811 4,613 472,730 — — — As of December 31, 2022 $ 3,198,808 $ 2,865,258 $ 4,626,333 $ 36,474 $ 10,726,873 $ 3,427,720 $ 182,547 $ 3,610,267 Financial liabilities at fair Derivatives NT$ (In Thousands) As of January 1, 2022 $ 2,380,599 Recognized in profit (loss) (1,433,405 ) Derecognition (508,797 ) As of December 31, 2022 $ 438,397 Financial assets at fair value through profit or loss Financial assets at fair value through Common stock Preferred stock Funds Convertible Others Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2023 $ 3,198,808 $ 2,865,258 $ 4,626,333 $ 36,474 $ — $ 10,726,873 $ 3,427,720 $ 182,547 $ 3,610,267 Recognized in profit (loss) (312,149 ) (277,994 ) (617,764 ) (8,828 ) — (1,216,735 ) — — — Recognized in other comprehensive income (loss) — — — — — — (365,395 ) (7,484 ) (372,879 ) Acquisition 610,153 294,046 294,245 — 154,761 1,353,205 — — — Disposal — (89,997 ) — (27,740 ) — (117,737 ) — — — Return of capital (1,384 ) — (36,346 ) — — (37,730 ) — — — Transfer out of Level 3 (461,403 ) — — — — (461,403 ) — — — Exchange effect 2,230 (4,679 ) 8,428 94 (1,461 ) 4,612 — — — As of December 31, 2023 $ 3,036,255 $ 2,786,634 $ 4,274,896 $ — $ 153,300 $ 10,251,085 $ 3,062,325 $ 175,063 $ 3,237,388 Financial liabilities at fair Derivatives NT$ (In Thousands) As of January 1, 2023 $ 438,397 Recognized in profit (loss) 580,965 As of December 31, 2023 $ 1,019,362 The total profit (loss) of NT$330 million, NT$(74) million and NT$(1,329) million for the years ended December 31, 2021, 2022 and 2023, were included in profit or loss that is attributable to the change in unrealized gains or losses relating to those financial assets without quoted market prices held at the end of the reporting period. The total profit (loss) of NT$(360) million, NT$829 million and NT$(581) million for the years ended December 31, 2021, 2022 and 2023, were included in profit or loss that is attributable to the change in unrealized gains or losses relating to those financial liabilities without quoted market prices held at the end of the reporting period. 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. Significant unobservable inputs of fair value measurement in Level 3 fair value hierarchy were as follows: As of December 31, 2022 Category Valuation technique Significant unobservable inputs Quantitative information Interrelationship between inputs and fair value Sensitivity analysis of interrelationship between inputs and fair value 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, 2022 by NT$273 million and NT$198 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2022 by NT$248 million. Embedded derivatives in exchangeable bonds Binomial tree valuation model Volatility 36.46% The higher the volatility, the higher the estimated fair value is determined. A change of 5% in the volatility could decrease/increase the Company’s profit (loss) for the year ended December 31, 2022 by NT$77 million and NT$67 million, respectively. As of December 31, 2023 Category Valuation technique Significant unobservable inputs Quantitative information Interrelationship between inputs and fair value Sensitivity analysis of interrelationship between inputs and fair value 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, 2023 by NT$261 million and NT$199 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2023 by NT$214 million. Embedded derivatives in exchangeable bonds Binomial tree valuation model Volatility 27.70% The higher the volatility, the higher the estimated fair value is determined. A change of 5% in the volatility could decrease/increase the Company’s profit (loss) for the year ended December 31, 2023 by NT$119 million and NT$131 million, respectively. b. Assets and liabilities not recorded at fair value but for which fair value is disclosed: The fair value of bonds payable is estimated by the market price or using a valuation model. The model uses market-based observable inputs including share price, exchange price, volatility, risk-free interest rates and risk discount rates. The fair value of long-term loans is determined using discounted cash flow model, based on the Company’s current incremental borrowing rates of similar loans. The fair values of the Company’s cash and cash equivalents, receivables, refundable deposits, other financial assets, short-term loans, payables and guarantee deposits approximate their carrying amount. As of December 31, 2022 Fair value measurements during reporting period Items Fair value Level 1 Level 2 Level 3 Carrying NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) Bonds payables (current portion included) $ 28,346,985 $ 22,916,330 $ 5,430,655 $ — $ 28,184,687 Long-term loans (current portion included) 19,279,342 — 19,279,342 — 19,279,342 As of December 31, 2023 Fair value measurements during reporting period Items Fair value Level 1 Level 2 Level 3 Carrying NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) Bonds payables (current portion included) $ 38,367,168 $ 32,827,211 $ 5,539,957 $ — $ 38,359,352 Long-term loans (current portion included) 22,883,344 — 22,883,344 — 22,883,344 |
Operating Segment Information
Operating Segment Information | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of operating segments [abstract] | |
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 only has wafer fabrication operating segment as the single reporting segment. 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. There was no material difference between the accounting policies of the operating segment and those described in Note 4. Please refer to the Company’s consolidated financial statements for the related segment revenue and operating results. (2) Geographic non-current As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Taiwan $ 130,812,383 $ 158,066,796 Singapore 29,080,766 55,322,448 China (includes Hong Kong) 37,213,538 33,424,815 Japan 10,736,562 13,415,669 Others 20,638 76,508 Total $ 207,863,887 $ 260,306,236 Non-current right-of-use (3) Major customers Individual customers accounting for at least 10% of operating revenues for the years ended December 31, 2021, 2022 and 2023 were as follows: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Customer A $ 21,935,208 $ 24,061,849 $ 16,615,745 Customer B $ 14,707,370 $ 22,226,167 $ 29,242,973 |
Capital Management
Capital Management | 12 Months Ended |
Dec. 31, 2023 | |
Capital Management [Abstract] | |
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 shareholders’ value. The Company also ensures its ability to operate continuously to provide returns to shareholders 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 shareholders, return capital to shareholders, 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, 2022 and 2023 were as follows: As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Total liabilities $ 201,834,635 $ 202,859,864 Less: Cash and cash equivalents (173,818,777 ) (132,553,615 ) Net debt 28,015,858 70,306,249 Total equity 322,810,948 343,716,968 Total capital $ 350,826,806 $ 414,023,217 Debt to capital ratios 7.99% 16.98% |
Summary of Material Accountin_2
Summary of Material Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of Summary Of Material Accounting Policies [Abstract] | |
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 shareholders 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, 2022 and 2023 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2022 2023 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED 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 KOREA CO., LTD. (UMC KOREA) 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. (USJC) Sales and manufacturing of integrated circuits 100.00 100.00 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 80.14 80.00 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 99.01 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 (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service — 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 — WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service 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 99.9985 99.9985 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) 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 71.86 100.00 |
Business Combinations and Goodwill | (4) Business Combinations and Goodwill Business combinations are accounted for using the acquisition method. The consideration transferred, the the 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 “Financial Instruments” (IFRS 9), 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 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 loss 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 NTD 30.62 on December 29, 2023 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 |
Current and Non-Current Distinction | (8) Current and Non-Current 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 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. 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 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 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 loss |
Inventories | (11) 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 | (12) 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 resulting in decrease in its stockholding percentage while maintaining its significant influence over that associate, the Company treats the transaction as deemed disposal and reclassifies to profit or loss or other appropriate account(s) the proportion of the gain or loss previously recognized in other comprehensive income relating to that reduction in ownership interest. 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 | (13) Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation and accumulated impairment losses, if any. The cost of an item of property, plant and equipment comprises the acquisition cost, the costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management, and the initial estimate of costs for dismantling, removing the item and restoring the site on which it is located. 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 depreciation of the assets is calculated mainly over the following estimated useful lives: buildings - 20 to 56 years; machinery and equipment - 6 years; transportation equipment - 6 years; furniture and fixtures - 6 years; leasehold improvement - the shorter of lease terms or useful lives. |
Lease | (14) Lease 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 | (15) 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 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 ( 5 10 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 | (16) Impairment of Non-Financial The Company assesses at each reporting date whether there is an indication that an asset in the scope of IAS 36 “Impairment of Assets” 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 | (17) Bonds Exchangeable bonds In accordance with IFRS 9, if the economic characteristics and risks of the embedded derivative are not closely related to the economic characteristics and risks of the host, the derivative financial instruments embedded in exchangeable bonds would be separated from the host and accounted for as financial assets or liabilities at fair value through profit or loss. UMC has issued exchangeable bonds where the bondholders may exchange the bonds into ordinary shares of certain public entities which UMC holds as financial assets (“reference shares”). When exchangeable bondholders exercise their right to exchange their bonds for reference shares, the carrying amount of the bonds and the related assets or liabilities accounts will be derecognized, and the difference will be recognized in profit or loss. Both the host and embedded derivative financial instrument in exchangeable bonds are classified as current liabilities as the bondholders have the right to demand settlement by exercising the exchange option of the bonds within 12 months. |
Post-Employment Benefits | (18) 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 | (19) 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. |
Provision | (20) Provision Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation and a reliable estimate can be made of the amount of the obligation. Where the Company expects some or all of a provision to be reimbursed, the reimbursement is recognized as a separate asset when, and only when it is virtually certain that reimbursement will be received. If the effect of the time value of money is material, provisions are discounted using a current pre-tax rate that reflects current market assessments of the time value of money and the risks specific to the liability. Where discounting is used, the increase in the provision due to the passage of time is recognized as a finance cost. Decommissioning Liabilities The amount of the decommissioning liability, arising from dismantling, removing the items of property, plant and equipment and restoring the site on which they are located, are provided at the present value of expected costs to settle the obligation using estimated cash flows, while the decommissioning costs are recognized as part of the cost of the particular items. The discount rate shall be a pre-tax Onerous contracts An onerous contract is a contract in which the unavoidable costs of meeting the obligations under the contract exceed the economic benefits expected to be received under it. The present obligation under the onerous contract shall be recognized and measured as a provision. The unavoidable costs under a contract reflect the least net cost of exiting from the contract, which is the lower of the cost of fulfilling it and any compensation or penalties arising from failure to fulfill it. The aforementioned cost of fulfilling a contract comprises the costs that relate directly to the contract, which includes the incremental costs of fulfilling that contract and the allocation of other costs that relate directly to fulfilling contracts. |
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 Equity-settled share-based payment transactions The compensation cost of equity-settled transactions between the Company and its employees is measured at the fair value of the equity instruments on the grant date, and is recognized as expense, together with a corresponding increase in equity, over the vesting period. When issuing restricted stocks for employees, the unvested restricted stocks issued on the grant date for employees are recognized in unearned employee compensation as a transitional contra equity account and such account shall be amortized as compensation expense over the vesting period. The cumulative expense recognized for equity-settled transactions at each reporting date until the vesting 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 movement in cumulative cost recognized at the beginning and end of the period is recognized through profit or loss for the period. No expense is recognized for awards that do not ultimately vest, except for equity-settled transactions where 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 Cash-settled share-based payment transactions The compensation cost of cash-settled share-based payment transactions between the Company and its employees is measured at the fair value of the liability incurred and recognized as expense with corresponding liability over the vesting period. The fair value of the liability is remeasured at the end of each reporting period and at the settlement date with the movement in fair value recognized through profit or loss for the period until the liability is settled. |
Revenue Recognition | (23) Revenue Recognition 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 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 shareholders 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 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 shareholders’ 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 that, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss and does not give rise to equal taxable and deductible temporary differences; 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 that, at the time of the transaction, affects neither the accounting profit nor taxable profit or loss and does not give rise to equal taxable and deductible temporary differences; 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. According to the temporary exception in the International Tax Reform – Pillar Two Model Rules (Amendments to IAS 12 “Income Taxes”), deferred tax assets and liabilities related to Pillar Two income tax will not be recognized nor disclosed. 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 number of shares outstanding is adjusted retroactively for stock dividends and employee stock compensation issues. |
Summary of Material Accountin_3
Summary of Material Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of Summary Of Material Accounting Policies [Abstract] | |
Consolidated Entities | b. The consolidated entities as of December 31, 2022 and 2023 were as follows: Percentage of ownership (%) Investor Subsidiary Business nature 2022 2023 UMC UMC GROUP (USA) IC Sales 100.00 100.00 UMC UNITED 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 KOREA CO., LTD. (UMC KOREA) 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. (USJC) Sales and manufacturing of integrated circuits 100.00 100.00 UMC and FORTUNE WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) Sales and manufacturing of integrated circuits 80.14 80.00 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 99.01 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 (CALIFORNIA) Research and development 100.00 100.00 OMNI ECP VITA PTE. LTD. Insurance 100.00 100.00 WAVETEK WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service — 100.00 WAVETEK WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) Investment holding 100.00 — WAVETEK-SAMOA WAVETEK MICROELECTRONICS CORPORATION (USA) Marketing service 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 99.9985 99.9985 HJ UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) 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 71.86 100.00 |
Contents of Significant Accou_2
Contents of Significant Accounts (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Contents Of Significant Accounts [Line Items] | |
Cash and Cash Equivalents | (1) Cash and Cash Equivalents As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Cash on hand and petty cash $ 6,023 $ 6,200 Checking and savings accounts 42,422,443 50,322,942 Time deposits 125,467,386 80,276,114 Repurchase agreements collateralized by government bonds and corporate notes 5,922,925 1,948,359 Total $ 173,818,777 $ 132,553,615 |
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 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Common stock SILICON INTEGRATED SYSTEMS CORP. $ 2,316,197 $ — Common stock UNIMICRON HOLDING LIMITED 2,847,385 2,514,120 Common stock ITE TECH. INC. 1,023,266 2,100,977 Common stock CHIPBOND TECHNOLOGY CORPORATION 3,051,603 3,843,744 Common stock NOVATEK MICROELECTRONICS CORP. (NOVATEK) 5,188,267 8,501,851 Common stock SHIN-ETSU HANDOTAI TAIWAN CO., LTD. 580,335 548,205 Preferred stock MTIC HOLDINGS PTE. LTD. 182,547 175,063 |
Summary of Income Recognized in Profit or Loss from Equity Instruments Designated as Fair Value Through Other Comprehensive Income | b. Dividend income recognized in profit or loss from equity instruments designated as fair value through other comprehensive income were listed below: For the years 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Held at end of period $ 1,431,931 $ 1,052,336 Derecognized during the period — 142,535 Total $ 1,431,931 $ 1,194,871 |
Summary of Details on Derecognition of Such Investments | c. The Company reclassified its equity instrument investment in SIS as investments accounted for under the equity method. Details on derecognition of such investments are as follow: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Fair value on the date of disposal $ — $ — $ 3,035,999 Cumulative gains (losses) reclassified to retained earnings due to derecognition $ — $ — $ (1,628,388 ) |
Aging Analysis of Accounts Receivable | Aging analysis of accounts receivable: As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Neither past due $ 30,545,437 $ 25,707,008 Past due: ≤ 30 days 5,303,765 3,008,126 31 to 60 days 130,408 78,668 61 to 90 days 3,247 5,599 91 to 120 days 7,886 — ≥ 121 days 662,868 517,211 Subtotal 6,108,174 3,609,604 Total $ 36,653,611 $ 29,316,612 |
Movement of Loss Allowance | Movement of loss allowance for accounts receivable: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Beginning balance $ 194,491 $ 209,101 Net recognition (reversal) for the period 14,610 (130,039 ) Ending balance $ 209,101 $ 79,062 |
Inventories, Net | (6) Inventories, Net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Raw materials $ 6,335,428 $ 10,995,569 Supplies and spare parts 7,161,216 6,443,172 Work in process 14,897,926 15,560,517 Finished goods 2,675,390 2,713,300 Total $ 31,069,960 $ 35,712,558 |
Details of Investments Accounted for Under the Equity Method | (7) Investments Accounted for Under the Equity Method a. Details of investments accounted for under the equity method are as follows: As of December 31, 2022 2023 Investee companies Amount Percentage of Amount Percentage of NT$ NT$ (In Thousands) (In Thousands) Listed companies SILICON INTEGRATED SYSTEMS CORP. (SIS) (Note A) $ — — $ 2,373,060 19.02 FARADAY TECHNOLOGY CORP. (FARADAY) (Note B) 1,862,245 13.78 1,990,073 13.78 UNIMICRON TECHNOLOGY CORP. (UNIMICRON) (Note C) 13,285,169 13.27 13,644,560 13.05 Unlisted companies MTIC HOLDINGS PTE. LTD. (Note D) — 45.44 — 45.44 UNITECH CAPITAL INC. 426,070 42.00 625,667 42.00 TRIKNIGHT CAPITAL CORPORATION (TRIKNIGHT) (Note E) 2,117,678 40.00 2,109,906 40.00 HSUN CHIEH CAPITAL CORP. 210,690 40.00 235,098 40.00 PURIUMFIL INC. 14,622 40.00 11,474 40.00 HSUN CHIEH INVESTMENT CO., LTD. (HSUN CHIEH) (Note F) 2,980,984 36.49 4,126,878 36.49 YANN YUAN INVESTMENT CO., LTD. (YANN YUAN) 5,455,743 26.78 7,516,327 26.78 UNITED LED CORPORATION HONG KONG LIMITED 97,156 25.14 93,793 25.14 VSENSE CO., LTD. (Note D) — 23.98 — 23.98 TRANSLINK CAPITAL PARTNERS I, L.P. (Note G) 54,556 10.38 58,964 10.38 Total $ 26,504,913 $ 32,785,800 Note A: In August 2023, the board chairman of SIS changed and became the same person as the board chairman of UMC. After considering the comprehensive conditions, including ownership interest held and representation on Board of Directors of SIS, etc., the Company determines that it has significant influence over SIS and accounts for its investment in SIS as an associate. SIS was previously measured at fair value through other comprehensive income and reclassified as investments accounted for under the equity method. UMC’s share of the net fair value of SIS’s identifiable assets and liabilities was in excess of the fair value of the previously held investment in SIS at the acquisition date, and the difference was recognized as bargain purchase gain. Cumulative fair value change that was previously recognized in other comprehensive loss up to reclassification date was reclassified to retained earnings in the current period. Note B: Beginning from June 2015, the Company accounts for its investment in FARADAY as an associate given the fact that UMC obtained the ability to exercise significant influence over FARADAY through representation on its Board of Directors. Note C: Beginning from June 2020, the Company accounts for its investment in UNIMICRON as an associate given the fact that UMC obtained the ability to exercise significant influence over UNIMICRON through representation on its Board of Directors. On January 6, 2023, UNIMICRON issued new shares to merge with SUBTRON TECHNOLOGY CO., LTD. (SUBTRON) through share conversion. The share conversion ratio was 1 common share of SUBTRON to exchange 0.219 common shares of UNIMICRON. The 23 million shares of SUBTRON held by the Company were exchanged to 5 million common shares newly issued by UNIMICRON. Note D: When the Company’s share of losses of an associate equals or exceeds its interest in that associate, the Company discontinues recognizing its share of further losses. Additional losses and liabilities are recognized only to the extent that the Company has incurred legal or constructive obligations or made payments on behalf of that associate. Note E: TRIKNIGHT executed a capital reduction and refunded NT$400 million and NT$560 million based on UMC’s stockholding percentage in June and December 2023, respectively. UMC’s stockholding percentage remains unchanged. Note F: HSUN CHIEH executed a capital reduction and refunded NT$343 million based on UMC’s stockholding percentage in April 2023. UMC’s stockholding percentage remains unchanged. Note G: The Company follows international accounting practices in equity accounting for limited partnerships and uses the equity method to account for these investees. |
Property, Plant and Equipment | (8) Property, Plant and Equipment a. 2022 Assets Used by the Company: Cost: Land Buildings Machinery Transportation Furniture Leasehold Construction in Total NT$ 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, 2022 $ 1,491,343 $ 36,827,480 $ 897,806,699 $ 55,959 $ 7,305,174 $ 61,282 $ 22,856,033 $ 966,403,970 Additions — 325,943 — — — — 72,270,938 72,596,881 Disposals — (69,897 ) (6,391,003 ) — (27,782 ) (2,414 ) (69,640 ) (6,560,736 ) Transfers and reclassifications — 219,666 46,548,734 8,154 730,317 421 (39,772,778 ) 7,734,514 Exchange effect (21,127 ) 294,577 15,855,258 810 54,284 3,786 79,390 16,266,978 As of December 31, $ 1,470,216 $ 37,597,769 $ 953,819,688 $ 64,923 $ 8,061,993 $ 63,075 $ 55,363,943 $ 1,056,441,607 Accumulated Depreciation and Impairment: 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, 2022 $ — $ 21,184,969 $ 810,904,881 $ 47,108 $ 6,222,383 $ 55,125 $ — $ 838,414,466 Depreciation — 1,443,545 38,565,229 3,946 456,017 2,816 — 40,471,553 Disposals — (69,489 ) (6,331,532 ) — (27,421 ) (2,404 ) — (6,430,846 ) Transfers and reclassifications — 161 (4,913 ) — (176 ) — — (4,928 ) Exchange effect — 172,320 14,604,120 543 46,714 3,846 — 14,827,543 As of December 31, 2022 $ — $ 22,731,506 $ 857,737,785 $ 51,597 $ 6,697,517 $ 59,383 $ — $ 887,277,788 Net carrying amount: As of December 31, 2022 $ 1,470,216 $ 14,866,263 $ 96,081,903 $ 13,326 $ 1,364,476 $ 3,692 $ 55,363,943 $ 169,163,819 Assets Subject to Operating Leases: 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, 2022 $ 549,010 $ 2,422,389 $ — $ 1,312,703 $ 4,284,102 Disposals — — — (660 ) (660 ) Transfers and reclassifications — (1,226 ) 6,345 15,562 20,681 Exchange effect (3,223 ) 22,084 — 6,686 25,547 As of December 31, 2022 $ 545,787 $ 2,443,247 $ 6,345 $ 1,334,291 $ 4,329,670 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, 2022 $ — $ 1,095,113 $ — $ 1,236,790 $ 2,331,903 Depreciation — 94,644 — 60,229 154,873 Disposals — — — (660 ) (660 ) Transfers and reclassifications — (161 ) 6,345 211 6,395 Exchange effect — 13,216 — 5,696 18,912 As of December 31, 2022 $ — $ 1,202,812 $ 6,345 $ 1,302,266 $ 2,511,423 Net carrying amount: As of December 31, 2022 $ 545,787 $ 1,240,435 $ — $ 32,025 $ 1,818,247 b. 2023 Assets Used by the Company: 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, 2023 $ 1,470,216 $ 37,597,769 $ 953,819,688 $ 64,923 $ 8,061,993 $ 63,075 $ 55,363,943 $ 1,056,441,607 Additions — 223,177 — — — — 82,213,765 82,436,942 Disposals — (12,160 ) (6,475,636 ) — (112,396 ) — (33,581 ) (6,633,773 ) Transfers a — 902,122 77,170,979 7,104 953,582 3,379 (54,194,544 ) 24,842,622 Exchange effect (39,878 ) (341,045 ) (3,016,210 ) (315 ) (29,711 ) (631 ) (990,932 ) (4,418,722 ) As of December 31, 2023 $ 1,430,338 $ 38,369,863 $ 1,021,498,821 $ 71,712 $ 8,873,468 $ 65,823 $ 82,358,651 $ 1,152,668,676 Accumulated Depreciation and Impairment: 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, 2023 $ — $ 22,731,506 $ 857,737,785 $ 51,597 $ 6,697,517 $ 59,383 $ — $ 887,277,788 Depreciation — 1,416,727 35,031,869 4,924 490,468 4,149 — 36,948,137 Disposals — (12,160 ) (6,468,067 ) — (112,330 ) — — (6,592,557 ) Exchange effect — (107,933 ) (2,212,913 ) (264 ) (19,642 ) (494 ) — (2,341,246 ) As of December 31, 2023 $ — $ 24,028,140 $ 884,088,674 $ 56,257 $ 7,056,013 $ 63,038 $ — $ 915,292,122 Net carrying amount: As of December 31, 2023 $ 1,430,338 $ 14,341,723 $ 137,410,147 $ 15,455 $ 1,817,455 $ 2,785 $ 82,358,651 $ 237,376,554 Assets Subject to Operating Leases: 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, 2023 $ 545,787 $ 2,443,247 $ 6,345 $ 1,334,291 $ 4,329,670 Transfers and reclassifications — — — 54,469 54,469 Exchange effect (6,084 ) (2,330 ) — (3,020 ) (11,434 ) As of December 31, 2023 $ 539,703 $ 2,440,917 $ 6,345 $ 1,385,740 $ 4,372,705 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, 2023 $ — $ 1,202,812 $ 6,345 $ 1,302,266 $ 2,511,423 Depreciation — 94,944 — 23,395 118,339 Exchange effect — (688 ) — (3,063 ) (3,751 ) As of December 31, 2023 $ — $ 1,297,068 $ 6,345 $ 1,322,598 $ 2,626,011 Net carrying amount: As of December 31, 2023 $ 539,703 $ 1,143,849 $ — $ 63,142 $ 1,746,694 |
Summary of Interest Expense Capitalized | c. Details of interest expense capitalized were as follows: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Interest expense capitalized $ 1,661 $ 9,355 Interest rates applied 1.44% - 1.61% 1.48% - 1.65% |
Disclosure Of Detailed Information About Lease Right Of Use Assets Explanatory | a. The Company as a lessee (a) Right-of-use As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Land (including land use right) $ 5,714,166 $ 5,318,986 Buildings 124,420 156,483 Machinery and equipment 1,748,244 1,506,824 Transportation equipment 21,485 16,356 Other equipment 3,676 1,706 Net $ 7,611,991 $ 7,000,355 For the years ended December 31, 2022 2023 NT$ NT$ Depreciation (In Thousands) (In Thousands) Land (including land use right) $ 359,007 $ 377,593 Buildings 119,641 93,610 Machinery and equipment 206,445 203,606 Transportation equipment 12,287 13,267 Other equipment 4,568 3,004 Total $ 701,948 $ 691,080 i. For the years ended December 31, 2022 and 2023, the Company’s addition to right-of-use ii. Please refer to Note 8 for right-of-use (b) Lease Liabilities As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Current $ 537,314 $ 514,324 Non-current 5,199,781 4,878,863 Total $ 5,737,095 $ 5,393,187 Please refer to Note 6(24) for the interest expenses on the lease liabilities. |
Intangible Assets | (10) Intangible Assets 2022 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, 2022 $ 15,012 $ 4,845,037 $ 4,491,164 $ 3,348,071 $ 12,699,284 Additions — 2,713,534 — 480,880 3,194,414 Write-off — (1,857,289 ) (1,344,682 ) (869,940 ) (4,071,911 ) Reclassifications — (10,721 ) — — (10,721 ) Exchange effect — (20,774 ) 275,950 (5,027 ) 250,149 As of December 31, 2022 $ 15,012 $ 5,669,787 $ 3,422,432 $ 2,953,984 $ 12,061,215 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, 2022 $ 7,398 $ 2,913,824 $ 3,324,667 $ 2,808,462 $ 9,054,351 Amortization — 1,656,765 475,870 556,965 2,689,600 Write-off — (1,857,289 ) (1,344,682 ) (869,940 ) (4,071,911 ) Exchange effect — (23,903 ) 141,658 (3,780 ) 113,975 As of December 31, 2022 $ 7,398 $ 2,689,397 $ 2,597,513 $ 2,491,707 $ 7,786,015 Net carrying amount: As of December 31, 2022 $ 7,614 $ 2,980,390 $ 824,919 $ 462,277 $ 4,275,200 2023 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, 2023 $ 15,012 $ 5,669,787 $ 3,422,432 $ 2,953,984 $ 12,061,215 Additions — 1,399,699 346,896 999,510 2,746,105 Write-off — (1,498,642 ) (1,826,383 ) (632,860 ) (3,957,885 ) Reclassifications — (5,855 ) — — (5,855 ) Exchange effect — (98,912 ) (169,404 ) (9,993 ) (278,309 ) As of December 31, 2023 $ 15,012 $ 5,466,077 $ 1,773,541 $ 3,310,641 $ 10,565,271 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, 2023 $ 7,398 $ 2,689,397 $ 2,597,513 $ 2,491,707 $ 7,786,015 Amortization — 1,741,898 277,768 535,944 2,555,610 Write-off — (1,498,642 ) (1,826,383 ) (632,860 ) (3,957,885 ) Exchange effect — (41,822 ) (139,933 ) (9,269 ) (191,024 ) As of December 31, 2023 $ 7,398 $ 2,890,831 $ 908,965 $ 2,385,522 $ 6,192,716 Net carrying amount: As of December 31, 2023 $ 7,614 $ 2,575,246 $ 864,576 $ 925,119 $ 4,372,555 |
Amortization Amounts of Intangible Assets | The amortization amounts of intangible assets were as follows: For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Operating costs $ 1,329,850 $ 1,144,960 Operating expenses $ 1,359,750 $ 1,410,650 |
Details of Loans | (11) Short-Term Loans As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Unsecured bank loans $ — $ 13,530,000 As of December 31, 2022 2023 Interest rates applied — 1.69% - 2.65% |
Financial Liabilities at Fair Value Through Profit or Loss, Current | (12) Financial Liabilities at Fair Value through Profit or Loss, Current As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Embedded derivatives in exchangeable bonds $ 438,397 $ 1,019,362 |
Bonds Payable | (13) Bonds Payable As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Unsecured domestic bonds payable $ 23,100,000 $ 33,100,000 Unsecured exchangeable bonds payable 5,757,373 5,757,373 Less: Discounts on bonds payable (672,686 ) (498,021 ) Total 28,184,687 38,359,352 Less: Current or exchangeable portion due within one year (5,101,591 ) (13,779,701 ) Net $ 23,083,096 $ 24,579,651 |
Summary of Terms and Conditions of Bonds | a. UMC issued domestic unsecured corporate bonds. The terms and conditions of the bonds are as follows: Term Issuance date Issued amount Coupon rate Repayment 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 was paid annually and the principal was fully repaid in March 2022. 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 was paid annually and the principal was fully repaid in October 2022. 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. Five-year In late April 2021 NT$5,500 million 0.57% Interest will be paid annually and the principal will be repayable in April 2026 upon maturity. Seven-year In late April 2021 NT$2,000 million 0.63% Interest will be paid annually and the principal will be repayable in April 2028 upon maturity. Ten-year In late April 2021 NT$2,100 million 0.68% Interest will be paid annually and the principal will be repayable in April 2031 upon maturity. Five-year In mid-December NT$5,000 million 0.63% Interest will be paid annually and the principal will be repayable in December 2026 upon maturity. Five-year (Green bond) In mid-September 2023 NT$10,000 million 1.62% Interest will be paid annually and the principal will be repayable in September 2028 upon maturity. |
Defined Benefit Plan Recognized on the Consolidated Balance Sheets | iii. The defined benefit plan recognized on the consolidated balance sheets were as follows: As of December 31, 2022 2023 NT$ (In Thousands) NT$ (In Thousands) Present value of the defined benefit obligation $ (5,106,623 ) $ (4,665,498 ) Fair value of plan assets 2,237,221 2,460,413 Funded status (2,869,402 ) (2,205,085 ) Net defined benefit liabilities, noncurrent recognized on the consolidated balance sheets $ (2,869,402 ) $ (2,205,085 ) |
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, 2022 2023 Cash 20 % 21 % Equity instruments 47 % 46 % Debt instruments 22 % 23 % Others 11 % 10 % |
Principal Underlying Actuarial Assumptions | v. The principal underlying actuarial assumptions are as follows: As of December 31, 2022 2023 Discount rate 1.24 % 1.20 % Rate of future salary increase 4.25 % 3.50 % |
Expected Future Benefit Payments | vi. Expected future benefit payments are as follows: Year As of December 31, 2023 NT$ (In Thousands) 2024 $ 596,934 2025 529,837 2026 486,833 2027 465,919 2028 434,293 2029 and thereafter 2,511,716 Total $ 5,025,532 |
Sensitivity Analysis | vii. Sensitivity analysis: As of December 31, 2022 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 $ 172,801 $ (182,478 ) $ (151,050 ) $ 145,000 As of December 31, 2023 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 $ 137,615 $ (144,683 ) $ (117,784 ) $ 113,478 |
Deferred Government Grants | (16) Deferred Government Grants As of December 31, 2022 2023 NT$ (In Thousands) NT$ (In Thousands) Beginning balance $ 8,543,798 $ 4,677,444 Arising during the period 174,352 591,086 Recorded in profit or loss: Other operating income (4,164,189 ) (2,663,843 ) Exchange effect 123,483 (57,665 ) Ending balance $ 4,677,444 $ 2,547,022 Current (classified under other current liabilities) $ 2,681,842 $ 717,457 Non-current 1,995,602 1,829,565 Total $ 4,677,444 $ 2,547,022 |
Summary of Refund Liabilities (classified under other current liabilities) | (17) Refund Liabilities (classified under other current liabilities) As of December 31, 2022 2023 NT$ (In Thousands) NT$ (In Thousands) Refund liabilities $ 1,139,227 $ 3,033,576 |
Summary of Provisions | (18) Provisions As of December 31, 2022 2023 NT$ (In Thousands) NT$ (In Thousands) Onerous Contracts (classified under other current liabilities) $ 469,779 $ 57,800 Decommissioning Liabilities (classified under other noncurrent liabilities) 366,863 602,433 Total $ 836,642 $ 660,233 |
Summary of Information about Provisions of Liabilities | Onerous Decommissioning NT$ (In Thousands) NT$ (In Thousands) Balance as of January 1, 2023 $ 469,779 $ 366,863 Arising during the period 40,154 191,360 Unused provision reversed (450,968 ) — Discount rate adjustment and unwinding of discount from the passage of time — 47,880 Exchange effect (1,165 ) (3,670 ) Balance as of December 31, 2023 $ 57,800 $ 602,433 |
Summary of Stock Held by Associates | b. Details of UMC’s stock (thousand shares) held by the Company’s associates are as follows: As of December 31, 2022 2023 HSUN CHIEH 441,371 441,371 YANN YUAN 192,963 192,963 SUBTRON, the subsidiary of UNIMICRON (Note A) — 47 SIS (Note B) — 266,580 Total 634,334 900,961 |
Details of Distribution | The details of appropriation were as follows: Appropriation of earnings Cash dividend per share 2022 2023 2022 2023 Legal reserve $ 8,905,139 $ 6,255,736 Special reserve (2,180,156 ) (2,734,057 ) Cash dividends 45,017,096 37,587,102 $ 3.60 $ 3.00 |
Non-controlling Interests | d. Non-controlling For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Balance as of January 1 $ 113,356 $ 223,181 $ 343,679 Impact of retroactive applications — (66,089 ) — Adjusted balance as of January 1 113,356 157,092 343,679 Attributable to non-controlling Net income (loss) (668,245 ) 819,960 450,184 Other comprehensive income (loss) (19 ) 8 (14 ) Share-based payment transactions — 1,490 5,817 Changes in subsidiaries’ ownership (11,126 ) (1,339 ) 456 Non-controlling 23,430 5,456 4,187 Derecognition of the non-controlling 765,785 (638,988 ) (463,450 ) Ending balance $ 223,181 $ 343,679 $ 340,859 |
Summary of Assumptions Used for Compensation Cost for Cash-settled Share-based Payment Measured at Fair Value on Grant Date by using Black-Scholes Option Pricing Model | The compensation cost for the cash-settled share-based payment was measured at fair value initially by using Black-Scholes Option Pricing Model and will be remeasured at the end of each reporting period until settlement. As of December 31, 2023, the assumptions used are as follows: Granted in September 2020 Granted in June 2021 Share price of measurement date (NT$/ per share) $ 52.60 $ 52.60 Expected volatility 23.95% 23.21% - 28.72% Expected life 0.67 years 0.44 - 1.44 years Expected dividend yield 6.02% 6.02% Risk-free interest rate 1.06% 1.06% - 1.08% |
Summary of Disaggregation of Revenue by Product | (21) Operating Revenues a. Disaggregation of revenue i. By product For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Wafer $ 204,594,399 $ 265,600,173 $ 211,750,622 Others 8,416,619 13,105,091 10,782,378 Total $ 213,011,018 $ 278,705,264 $ 222,533,000 |
Summary of Disaggregation of Revenue by Geography | ii. By geography For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Taiwan $ 92,427,670 $ 105,213,451 $ 68,360,231 China (includes Hong Kong) 26,949,205 39,641,613 27,545,452 Japan 13,445,127 17,053,279 11,612,866 Korea 17,548,763 25,689,385 30,872,198 USA 46,914,605 67,352,671 59,103,051 Europe 15,708,303 23,711,284 24,932,099 Others 17,345 43,581 107,103 Total $ 213,011,018 $ 278,705,264 $ 222,533,000 |
Summary of Disaggregation of Revenue by the Timing of Revenue Recognition | iii. By the timing of revenue recognition For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) At a point in time $ 211,074,982 $ 276,175,120 $ 220,283,306 Over time 1,936,036 2,530,144 2,249,694 Total $ 213,011,018 $ 278,705,264 $ 222,533,000 |
Summary of Balances of Contract Assets and Contract Liabilities | b. Contract balances i. Contract assets, current As of January 1, As of December 31, 2022 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Sales of goods and services $ 677,326 $ 766,691 $ 1,132,477 Less: Loss allowance (357,705 ) (393,373 ) (392,949 ) Net $ 319,621 $ 373,318 $ 739,528 ii. Contract liabilities As of January 1, As of December 31, 2022 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Sales of goods and services $ 4,083,140 $ 3,985,003 $ 3,681,352 Current $ 3,441,754 $ 3,546,815 $ 3,250,712 Non-current 641,386 438,188 430,640 Total $ 4,083,140 $ 3,985,003 $ 3,681,352 The movement of contract liabilities is mainly caused by the timing difference of the satisfaction of a performance of obligation and the consideration received from customers. |
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, 2021 2022 2023 Operating Operating Total Operating Operating Total Operating Operating Total NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Employee benefit expenses Salaries $ 23,388,888 $ 11,806,207 $ 35,195,095 $ 30,074,528 $ 13,928,646 $ 44,003,174 $ 26,693,905 $ 12,002,205 $ 38,696,110 Labor and health insurance 1,183,315 458,179 1,641,494 1,368,803 471,788 1,840,591 1,502,553 557,543 2,060,096 Pension 1,259,044 399,879 1,658,923 1,489,076 424,752 1,913,828 1,240,577 460,079 1,700,656 Other employee benefit expenses 335,829 144,668 480,497 373,739 165,114 538,853 421,871 196,739 618,610 Depreciation 42,002,745 1,908,719 43,911,464 39,305,321 1,756,609 41,061,930 36,006,021 1,545,067 37,551,088 Amortization 834,384 2,060,558 2,894,942 1,470,912 1,370,422 2,841,334 1,277,920 1,448,561 2,726,481 |
Details of Distribution of Employees' Compensation and Directors' Compensation | The details of distribution were as follows: 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Employees’ compensation – Cash $ 4,770,909 $ 9,160,485 $ 5,439,059 Directors’ compensation 25,264 45,000 45,000 |
Net Other Operating Income and Expenses | (23) Net Other Operating Income and Expenses For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Government grants $ 5,269,412 $ 5,058,658 $ 3,862,001 Rental income from property, plant and equipment 187,166 192,833 202,082 Gain on disposal of property, plant and equipment 143,735 482,983 268,293 Others (373,482 ) (394,827 ) (330,050 ) Total $ 5,226,831 $ 5,339,647 $ 4,002,326 |
Non-Operating Income and Expenses | (24) Non-Operating a. Other gains and losses For the years ended December 31, 2021 2022 2023 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 $ 2,892,470 $ (1,247,962 ) $ (40,553 ) Gain (Loss) on disposal of investments accounted for under the equity method (16,388 ) 50,553 163,395 Others (2,009,952 ) 62,869 100,254 Total $ 866,130 $ (1,134,540 ) $ 223,096 b. Finance costs For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Interest expenses Bonds payable $ 437,055 $ 486,079 $ 444,424 Bank loans 1,285,708 1,100,840 833,548 Lease liabilities 145,187 166,928 179,367 Others 139 31,464 16,390 Financial expenses 94,841 81,018 96,645 Total $ 1,962,930 $ 1,866,329 $ 1,570,374 |
Components of Other Comprehensive Income (Loss) | (25) Components of Other Comprehensive Income (Loss) For the year ended December 31, 2021 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 $ (197,477 ) $ — $ (197,477 ) $ 39,495 $ (157,982 ) Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income 5,811,342 — 5,811,342 (360,061 ) 5,451,281 Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss 2,959,130 — 2,959,130 (96,510 ) 2,862,620 Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations (4,743,299 ) 2,283 (4,741,016 ) 23,175 (4,717,841 ) Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss (24,018 ) (394 ) (24,412 ) 6,763 (17,649 ) Total other comprehensive income (loss) $ 3,805,678 $ 1,889 $ 3,807,567 $ (387,138 ) $ 3,420,429 For the year ended December 31, 2022 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 $ 296,804 $ — $ 296,804 $ (59,361 ) $ 237,443 Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income (4,646,064 ) — (4,646,064 ) (71,121 ) (4,717,185 ) Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss (1,694,965 ) — (1,694,965 ) 123,483 (1,571,482 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations 9,292,308 — 9,292,308 883,238 10,175,546 Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss 91,442 — 91,442 (23,672 ) 67,770 Total other comprehensive income (loss) $ 3,339,525 $ — $ 3,339,525 $ 852,567 $ 4,192,092 For the year ended December 31, 2023 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 $ 402,234 $ — $ 402,234 $ (80,447 ) $ 321,787 Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income 5,530,359 — 5,530,359 (243,057 ) 5,287,302 Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss 1,610,116 — 1,610,116 (90,891 ) 1,519,225 Items that may be reclassified subsequently to profit or loss: Exchange differences on translation of foreign operations (2,386,278 ) — (2,386,278 ) 386,660 (1,999,618 ) Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss (73,005 ) (1,413 ) (74,418 ) 3,768 (70,650 ) Total other comprehensive income (loss) $ 5,083,426 $ (1,413 ) $ 5,082,013 $ (23,967 ) $ 5,058,046 |
Major Components of Income Tax Expense | (26) Income Tax a. The major components of income tax expense (benefit) for the years ended December 31, 2021, 2022 and 2023 were as follows: i. Income tax expense (benefit) recorded in profit or loss For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Current income tax expense (benefit): Current income tax charge $ 7,088,975 $ 17,582,039 $ 6,426,598 Adjustments in respect of current income tax of prior periods (150,260 ) (585,941 ) (217,891 ) Deferred income tax expense (benefit): Deferred income tax related to origination and reversal of temporary differences 407,280 2,276,015 2,239,309 Deferred income tax related to recognition and derecognition of tax losses and unused tax credits 723,270 60,178 — Adjustment of prior year’s deferred income tax (130,841 ) 8,611 (120,230 ) Deferred income tax arising from write-down or reversal of write-down of deferred tax assets (20,172 ) (14,007 ) (16,516 ) Income tax expense recorded in profit or loss $ 7,918,252 $ 19,326,895 $ 8,311,270 ii. Deferred 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, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Remeasurements of defined benefit pension plans $ 39,495 $ (59,361 ) $ (80,447 ) Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income (360,061 ) (71,121 ) (243,057 ) Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss (96,510 ) 123,483 (90,891 ) Income tax related to items that will not be reclassified subsequently to profit or loss $ (417,076 ) $ (6,999 ) $ (414,395 ) (ii) Items that may be reclassified subsequently to profit or loss: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Exchange differences on translation of foreign operations $ 23,175 $ 883,238 $ 386,660 Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss 6,763 (23,672 ) 3,768 Income tax related to items that may be reclassified subsequently to profit or loss $ 29,938 $ 859,566 $ 390,428 iii. Income tax charged directly to equity For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Current income tax expense (benefit): Disposal of parent company’s stock by subsidiary recognized as treasury stock transactions $ (203 ) $ — $ — Deferred income tax expense (benefit): Adjustments of changes in net assets of associates and joint ventures accounted for using equity method 22 (2,720 ) (1,117 ) Income tax charged directly to equity $ (181 ) $ (2,720 ) $ (1,117 ) |
Reconciliation Between Income Tax Expense and Income Before Tax at UMC's Applicable Tax Rate | b. A reconciliation between income tax expense (benefit) and income before tax at UMC’s applicable tax rate were as follows: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Income before tax $ 58,496,432 $ 109,625,660 $ 68,450,404 At UMC’s statutory income tax rate 11,699,286 21,925,132 13,690,081 Adjustments in respect of current income tax of prior periods (150,260 ) (585,941 ) (217,891 ) Net changes in loss carry-forward and investment tax credits (845,267 ) (465,152 ) (2,179,234 ) Adjustment of deferred tax assets/liabilities for write-downs/reversals and different jurisdictional tax rates 183,123 (281,319 ) 211,639 Tax effect of non-taxable non-deductible Tax exempt income (3,258,695 ) (4,384,566 ) (1,428,035 ) Investment loss (gain) (1,388,877 ) 1,827,822 (755,800 ) Dividend income (171,725 ) (423,027 ) (323,182 ) Others 6,463 (340,745 ) (145,520 ) Basic tax — — 43,506 Estimated income tax on unappropriated earnings 1,558,031 1,247,910 (1,160,324 ) Effect of different tax rates applicable to UMC and its subsidiaries 116,174 605,929 234,510 Taxes withheld in other jurisdictions 43,443 35,979 38,346 Others 126,556 164,873 303,174 Income tax expense recorded in profit or loss $ 7,918,252 $ 19,326,895 $ 8,311,270 |
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, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Deferred income tax assets Depreciation $ 2,056,568 $ 2,396,554 Pension 569,193 436,129 Refund liabilities 138,617 306,408 Allowance for inventory valuation losses 507,621 682,909 Investment loss 474,405 314,427 Unrealized profit on intercompany sales 906,793 689,124 Others 573,039 304,860 Total deferred income tax assets 5,226,236 5,130,411 Deferred income tax liabilities Depreciation (70,133 ) (2,085,916 ) Investment gain (2,648,989 ) (2,888,534 ) Amortizable assets (298,451 ) (283,405 ) Others (544,863 ) (374,109 ) Total deferred income tax liabilities (3,562,436 ) (5,631,964 ) Net deferred income tax assets (liabilities) $ 1,663,800 $ (501,553 ) |
Movement of Deferred Tax | d. Movement of deferred tax For the years ended December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Balance as of January 1 $ 3,154,352 $ 1,663,800 Amounts recognized in profit or loss during the period (2,330,797 ) (2,102,563 ) Amounts recognized in other comprehensive income (loss) 852,567 (23,967 ) Amounts recognized in equity (2,720 ) (1,117 ) Exchange adjustments (9,602 ) (37,706 ) Balance as of December 31 $ 1,663,800 $ (501,553 ) |
Earnings Per Share | (27) Earnings Per Share a. Earnings per share-basic For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Net income attributable to the parent company $ 51,246,425 $ 89,478,805 $ 59,688,950 Weighted-average number of ordinary shares for basic earnings per share (thousand shares) 12,005,126 12,095,312 12,137,954 Earnings per share-basic (NTD) $ 4.27 $ 7.40 $ 4.92 b. Earnings per share-diluted For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Net income attributable to the parent company $ 51,246,425 $ 89,478,805 $ 59,688,950 Weighted-average number of ordinary shares for basic earnings per share (thousand shares) 12,005,126 12,095,312 12,137,954 Effect of dilution Restricted stocks for employees 159,478 156,098 114,974 Employees’ compensation 80,243 238,242 129,196 Weighted-average number of ordinary shares after dilution (thousand shares) 12,244,847 12,489,652 12,382,124 Earnings per share-diluted (NTD) $ 4.19 $ 7.16 $ 4.82 |
Reconciliation of Liabilities Arising from Financing Activities | (28) Reconciliation of Liabilities Arising from Financing Activities For the year ended December 31, 2021 Non-cash Items As of January 1, Cash Flows Foreign Others As of December 31, NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Short-term loans $ 11,057,132 $ (8,974,216 ) $ (158,792 ) $ — $ 1,924,124 Long-term loans (current portion included) 33,066,106 4,088,537 (529,736 ) — 36,624,907 Bonds payable (current portion included) 18,690,384 23,703,692 — (1,857,418 (Note B ) ) 40,536,658 Guarantee deposits (current portion included) 235,992 14,219,408 (85,631 ) — 14,369,769 (Note C ) Lease liabilities 5,576,864 (699,680 ) (144,419 ) 335,989 5,068,754 Other financial liabilities (Note D) 20,746,624 — (163,387 ) 382,972 20,966,209 For the year ended December 31, 2022 Non-cash Items As of January 1, Cash Flows Foreign Others As of December 31, NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Short-term loans $ 1,924,124 $ (1,965,684 ) $ 41,560 $ — $ — Long-term loans (current portion included) 36,624,907 (18,816,259 ) 1,470,694 — 19,279,342 Bonds payable (current portion included) 40,536,658 (13,305,050 ) — 953,079 (Note B ) 28,184,687 Guarantee deposits (current portion included) 14,369,769 14,984,941 1,402,291 — 30,757,001 (Note C ) Lease liabilities 5,068,754 (712,854 ) 153,406 1,227,789 (Note E ) 5,737,095 Other financial liabilities 20,966,209 — 306,902 176,376 21,449,487 For the year ended December 31, 2023 Non-cash Items As of January 1, Cash Flows Foreign Others As of December 31, NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) Short-term loans $ — $ 13,530,000 $ — $ — $ 13,530,000 Long-term loans (current portion included) 19,279,342 3,857,704 (253,702 ) — 22,883,344 Bonds payable (current portion included) 28,184,687 9,989,245 — 185,420 (Note B ) 38,359,352 Guarantee deposits (current portion included) 30,757,001 10,423,345 419,040 — 41,599,386 (Note C ) Lease liabilities 5,737,095 (666,439 ) (24,106 ) 346,637 5,393,187 Other financial liabilities (Note D) 21,449,487 (21,209,443 ) (330,783 ) 90,739 — Note A: Other non-cash Note B: Please refer to Note 6(13) for the Company’s exchangeable bonds. Note C: Guarantee deposits mainly consisted of deposits of capacity reservation. Note D: Please refer to Note 9(6) for more details on other financial liabilities. Note E: Mainly due to the increase in land lease. |
Unused tax losses [member] | |
Contents Of Significant Accounts [Line Items] | |
Unused Tax Credits and Losses | As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Expiry period 1-5 $ 35,263,925 $ 15,395,514 6-10 1,995,256 22,128,180 Total $ 37,259,181 $ 37,523,694 |
Plan assets [member] | |
Contents Of Significant Accounts [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, 2022 2023 NT$ (In Thousands) NT$ (In Thousands) Beginning balance of fair value of plan assets $ 1,581,012 $ 2,237,221 Items recognized as profit or loss: Interest income on plan assets 9,802 27,742 Contribution by employer 745,066 307,556 Benefits paid (224,632 ) (121,305 ) Remeasurements recognized in other comprehensive income (loss): Return on plan assets, excluding amounts included in interest income 125,973 9,199 Fair value of plan assets at end of year $ 2,237,221 $ 2,460,413 |
Present value of defined benefit obligation [member] | |
Contents Of Significant Accounts [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, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Defined benefit obligation at beginning of year $ (5,458,333 ) $ (5,106,623 ) Items recognized as profit or loss: Service cost (9,911 ) (9,893 ) Interest cost (33,842 ) (63,322 ) Subtotal (43,753 ) (73,215 ) Remeasurements recognized in other comprehensive income (loss): Arising from changes in financial assumptions 227,790 166,401 Experience adjustments (56,959 ) 226,634 Subtotal 170,831 393,035 Benefits paid 224,632 121,305 Defined benefit obligation at end of year $ (5,106,623 ) $ (4,665,498 ) |
More than 1 year [member] | |
Contents Of Significant Accounts [Line Items] | |
Details of Loans | (14) Long-Term Loans a. Details of long-term loans as of December 31, 2022 and 2023 were as follows: As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Secured Long-Term Loan from Mega International Commercial Bank (1) $ 9,732 $ 4,866 Repayable quarterly from October 24, 2019 to October 24, 2024 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Mega International Commercial Bank (2) 18,000 13,765 Repayable quarterly from February 23, 2022 to February 22, 2027 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Mega International Commercial Bank (3) 60,500 46,265 Repayable quarterly from December 22, 2022 to February 23, 2027 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Taiwan Cooperative Bank (1) 35,676 23,784 Repayable quarterly from October 19, 2015 to October 19, 2025 with monthly interest payments. Interest-only payment for the first year. As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Secured Long-Term Loan from Taiwan Cooperative Bank (2) 4,375 — Repayable monthly from May 31, 2019 to May 31, 2023 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (3) 32,000 20,000 Repayable monthly from August 13, 2020 to August 13, 2025 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (4) 16,552 10,345 Repayable monthly from October 29, 2020 to August 29, 2025 with monthly interest payments. Secured Long-Term Loan from Taiwan Cooperative Bank (5) 84,166 58,916 Repayable monthly from April 15, 2021 to April 15, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Taiwan Cooperative Bank (6) — 34,400 Repayable quarterly from December 28, 2023 to December 28, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Syndicated Loans from China Development Bank and 6 others (1) 1,915,577 — Repayable semi-annually from October 20, 2016 to October 19, 2024 with semi-annually interest payments. Interest-only payment for the first and the second year. Secured Syndicated Loans from China Development Bank and 6 others (2) 12,415,200 11,766,832 Repayable semi-annually from March 19, 2021 to March 18, 2031 with semi-annually interest payments. Interest-only payment for the first and the second year. Secured Long-Term Loan from First Commercial Bank 47,000 35,668 Repayable monthly from December 2, 2021 to December 2, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from KGI Bank 21,000 21,000 Settlement due on December 25, 2026 with monthly interest payments. Secured Long-Term Loan from Shanghai Commercial Bank (1) 22,200 16,650 Repayable monthly from January 19, 2022 to December 15, 2026 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Shanghai Commercial Bank (2) — 4,980 Repayable quarterly from March 23, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from Shanghai Commercial Bank (3) — 45,000 Repayable quarterly from June 6, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. Secured Long-Term Loan from CTBC Bank — 131,750 Repayable semi-annually from September 25, 2023 to September 25, 2028 with monthly interest payments. Interest-only payment for the first and the second year. Unsecured Long-Term Loan from Bank of China 1,797,364 1,515,790 Repayable semi-annually from June 24, 2023 to June 24, 2026 with quarterly interest payments. Unsecured Long-Term Loan from Bank of Taiwan 2,000,000 1,333,333 Repayable quarterly from March 24, 2023 to December 24, 2025 with monthly interest payments. Unsecured Revolving Loan from First Commercial Bank (1) (Note A) 300,000 — Settlement due on February 25, 2026 with monthly interest payments. As of December 31, Lenders 2022 2023 Redemption NT$ NT$ (In Thousands) (In Thousands) Unsecured Revolving Loan from First Commercial Bank (2) (Note A) 300,000 — Settlement due on March 15, 2026 with monthly interest Unsecured Revolving Loan from First Commercial Bank (3) (Note A) 200,000 — Settlement due on June 15, 2026 with monthly interest Unsecured Revolving Loan from First Commercial Bank (4) (Note B) — 800,000 Settlement due on July 13, 2028 with monthly interest payments. Unsecured Revolving Loan from Yuanta Commercial Bank (Note C) — 3,000,000 Repayable annually from March 2, 2023 to March 2, 2026 with monthly interest payments. Unsecured Revolving Loan from CTBC Bank (Note D) — 4,000,000 Settlement due on July 20, 2025 with monthly interest payments. Subtotal 19,279,342 22,883,344 Less: Current portion (2,485,053 ) (2,227,096 ) Total $ 16,794,289 $ 20,656,248 As of December 31, 2022 2023 Interest rates applied 1.48% - 5.62% 1.67% - 6.56% Note A: First Commercial Bank approved the 1-year Note B: First Commercial Bank approved the 1-year Note C: UMC entered into a 5-year Note D: UMC entered into a 5-year |
Aggregated individually immaterial associates [member] | |
Contents Of Significant Accounts [Line Items] | |
Aggregate Amount of the Company's Share of its Individually Immaterial Associates | The aggregate amount of the Company’s share of all its individually immaterial associates that are accounted for using the equity method were as follows: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Profit from continuing operations $ 5,193,495 $ 1,626,103 $ 4,307,614 Other comprehensive income (loss) 2,965,202 (1,706,960 ) 1,540,436 Total comprehensive income (loss) $ 8,158,697 $ (80,857 ) $ 5,848,050 |
Trade receivables [member] | |
Contents Of Significant Accounts [Line Items] | |
Financial Assets | (5) Accounts Receivable, Net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Accounts receivable $ 36,653,611 $ 29,316,612 Less: loss allowance (209,101 ) (79,062 ) Net $ 36,444,510 $ 29,237,550 |
Financial assets at fair value through profit or loss [member] | |
Contents Of Significant Accounts [Line Items] | |
Financial Assets | (2) Financial Assets at Fair Value through Profit or Loss As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets mandatorily measured at fair value through profit or loss Common stocks $ 10,275,563 $ 9,170,230 Preferred stocks 2,939,939 2,862,119 Funds 5,044,702 4,472,097 Convertible bonds 230,365 480,715 Others — 153,300 Total $ 18,490,569 $ 17,138,461 Current $ 705,918 $ 443,601 Non-current 17,784,651 16,694,860 Total $ 18,490,569 $ 17,138,461 |
Financial assets at fair value through other comprehensive income [member] | |
Contents Of Significant Accounts [Line Items] | |
Financial Assets | (3) Financial Assets at Fair Value through Other Comprehensive Income As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Equity instruments Common stocks $ 15,007,053 $ 17,508,897 Preferred stocks 182,547 175,063 Total $ 15,189,600 $ 17,683,960 Current $ 3,213,057 $ 5,753,379 Non-current 11,976,543 11,930,581 Total $ 15,189,600 $ 17,683,960 |
Financial assets measured at amortized cost [member] | |
Contents Of Significant Accounts [Line Items] | |
Financial Assets | (4) Financial assets measured at amortized cost As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets measured at amortized cost Time deposits with original maturities over three months $ 849,308 $ 6,353,768 Bonds 20,000 — Total $ 869,308 $ 6,353,768 Current $ 861,817 $ 6,131,077 Non-current 7,491 222,691 Total $ 869,308 $ 6,353,768 |
Significant Related Party Tra_2
Significant Related Party Transactions (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Statement [Line Items] | |
Key Management Personnel Compensation | c. Key management personnel compensation For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Short-term employee benefits $ 562,117 $ 2,047,118 $ 1,462,964 Post-employment benefits 2,322 2,782 2,732 Share-based payment 1,035,401 719,786 500,391 Others 578 649 618 Total $ 1,600,418 $ 2,770,335 $ 1,966,705 |
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, 2021 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 48,440,369 Net 60 days UMC UMC-USA Accounts receivable 6,286,428 — UMC USCXM Sales 1,222,320 (Note C ) Net 30 days UMC USCXM Accounts receivable 29,012 — UMC UDS Sales 178,331 Net 30 days UMC UDS Accounts receivable 18,818 — USJC UMC-USA Sales 2,917,993 Net 60 days USJC UMC-USA Accounts receivable 428,363 — USCXM UMC-USA Sales 1,444,736 Net 60 days USCXM UMC-USA Accounts receivable 221,375 — WAVETEK UMC-USA Sales 545,785 Net 60 days WAVETEK UMC-USA Accounts receivable 126,580 — WAVETEK UMC Sales 110,620 Month-end HJ UMC-USA Sales 366,968 Net 60 days HJ UMC-USA Accounts receivable 60,147 — For the year ended December 31, 2022 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 68,554,072 Net 60 days UMC UMC-USA Accounts receivable 9,502,922 — UMC USCXM Sales 1,143,280 (Note C ) Net 30 days UMC USCXM Accounts receivable 16,774 — UMC UDS Sales 656,472 Net 30 days UMC UDS Accounts receivable 6,734 — UMC USJC Sales 164,855 Net 60 days UMC USJC Accounts receivable 151,430 — USJC UMC-USA Sales 4,272,900 Net 60 days USJC UMC-USA Accounts receivable 744,082 — USCXM UMC-USA Sales 1,565,670 Net 60 days USCXM UMC-USA Accounts receivable 310,431 — USCXM UMC Sales 1,035,407 Net 30 days USCXM UMC Accounts receivable 173 — USCXM UDS Sales 148,259 Month-end USCXM UDS Accounts receivable 171 — WAVETEK UMC-USA Sales 716,357 Net 60 days WAVETEK UMC-USA Accounts receivable 81,819 — WAVETEK UMC Sales 124,178 Month-end HJ UMC-USA Sales 551,913 Net 60 days HJ UMC-USA Accounts receivable 147,265 — HJ UDS Sales 311,972 Month-end HJ UDS Accounts receivable 9,500 — For the year ended December 31, 2023 Entity Counterparty Transactions (Note A) Account Amount Terms NT$ (In Thousands) UMC UMC-USA Sales $ 61,923,652 Net 60 days UMC UMC-USA Accounts receivable 5,827,800 — UMC USCXM Sales 1,127,275 (Note C ) Net 30 days UMC USCXM Accounts receivable 11,688 — UMC UDS Sales 364,948 Net 30 days UMC UDS Accounts receivable 10,800 — USJC UMC-USA Sales 3,487,292 Net 60 days USJC UMC-USA Accounts receivable 342,835 — USCXM UMC-USA Sales 1,208,630 Net 60 days USCXM UMC-USA Accounts receivable 17,816 — USCXM UMC Sales 134,303 Net 30 days USCXM UDS Sales 286,087 Month-end USCXM UDS Accounts receivable 362 — WAVETEK UMC-USA Sales 505,806 Net 60 days WAVETEK UMC-USA Accounts receivable 53,916 — HJ UMC-USA Sales 384,067 Net 60 days HJ UMC-USA Accounts receivable 43,863 — HJ UDS Sales 159,523 Month-end HJ UDS Accounts receivable 2,696 — Note A: The significant intercompany transactions listed above include downstream and upstream 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$0.35 billion, which was recognized as deferred revenue to be realized over time. |
Other related parties [member] | |
Statement [Line Items] | |
Significant Transactions Between the Company and Related Parties | b. Significant transactions between the Company and other related parties were as follows: (i) Name and Relationship of Related Parties Name of related parties Relationship with the Company FARADAY TECHNOLOGY CORP. and its Subsidiaries Associate UNIMICRON TECHNOLOGY CORP. Associate SILICON INTEGRATED SYSTEMS CORP. Associate (Note) PHOTRONICS DNP MASK CORPORATION Other related party XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. Directors and supervisors of subsidiaries FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP Directors of subsidiaries Note: Prior to August 2023, SIS held one board seat on UMC’s Board of Directors. Therefore, SIS was classified as other related party. Beginning from August 2023, the Company determines that it has significant influence over SIS and accounts for its investment in SIS as an associate. Please refer to Note 6(7) for the relevant information. (ii) Operating revenues For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Associates $ 2,778,544 $ 5,744,098 $ 3,018,171 Other related party 38,797 40,474 4,463 Total $ 2,817,341 $ 5,784,572 $ 3,022,634 (iii) Accounts receivable, net As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Associates FARADAY TECHNOLOGY CORP. and its Subsidiaries FARADAY TECHNOLOGY CORP. $ 441,963 $ 302,828 ARTERY TECHNOLOGY CORPORATION, LTD. 56,864 40,886 Others 30,698 3,602 Other associates — 648 Other related party 1,052 — Total $ 530,577 $ 347,964 The sales price to the above related parties was determined through mutual agreement in reference to market conditions. The collection periods for domestic sales to related parties were month-end 30 60 month-end 30 60 (iv) Refund liabilities (classified under other current liabilities) As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Associates $ 1,545 $ 636 Other related party 7 — Total $ 1,552 $ 636 (v) Significant asset transactions Acquisition of financial assets at fair value through profit or loss, noncurrent For the year ended December 31, 2021: Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 82 Stock of ARTERY TECHNOLOGY CORPORATION $ 13,929 For the years ended December 31, 2022 and 2023: None. Acquisition of subsidiaries’ ownership For the years ended December 31, 2021 and 2022: None. For the year ended December 31, 2023: Trading Capital Amount Transaction underlying Purchase price RMB¥ NT$ (In Thousands) (In Thousands) XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. 3,741,862 Ownership of $ 17,945,970 FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP 674,762 Ownership of 3,263,473 Total 4,416,624 $ 21,209,443 Please refer to Note 9(6) for the relevant information. Acquisition of investments accounted for under the equity method For the years ended December 31, 2021 and 2022: None. For the year ended December 31, 2023: Trading Volume Transaction underlying Purchase price NT$ (In Thousands) Associates 4,945 Stock of $ 608,224 Please refer to Note 6(7) for the relevant information. Acquisition of intangible assets Purchase price For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) FARADAY TECHNOLOGY CORP. $ 181,254 $ 266,053 $ 323,551 (vi) Others Mask expenditure For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Other related party $ 1,861,438 $ 2,581,409 $ 2,375,225 Other payables of mask expenditure As of December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Other related party $ 560,042 $ 812,185 $ 751,763 |
Assets Pledged as Collateral (T
Assets Pledged as Collateral (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure Of Assets Pledged As Collateral [Abstract] | |
Summary of Assets Pledged as Collateral | The following table lists assets of the Company pledged as collateral: As of December 31, 2022 2023 Party to which asset(s) was pledged Purpose of pledge NT$ NT$ (In Thousands) (In Thousands) Refundable Deposits (Time deposit) $ 812,248 $ 813,289 Customs Customs duty guarantee Refundable Deposits (Time deposit) 236,587 236,556 Science Park Bureau Collateral for land lease Refundable Deposits (Time deposit) 29,371 18,647 Science Park Bureau Collateral for dormitory lease Refundable Deposits (Time deposit) 64,950 64,950 National Property Administration, Ministry of Finance Guarantee for the application of national non-public Refundable Deposits (Time deposit) 8,118 8,118 Bureau of Land Administration, Tainan City Government Guarantee for the application of national non-public Refundable Deposits (Time deposit) 34,100 36,970 Liquefied Natural Gas Business Division, CPC Corporation, Taiwan Energy resources guarantee Refundable Deposits (Time deposit) 1,043,840 1,006,852 Bank of China and Agricultural Bank of China Bank performance guarantee Refundable Deposits (Time deposit) 459,750 459,900 CTBC Bank Singapore Branch Collateral for letter of credit Buildings 4,828,597 4,487,730 Taiwan Cooperative Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Machinery and equipment 14,066,044 6,627,761 Taiwan Cooperative Bank, Mega International Commercial Bank, KGI Bank, First Commercial Bank, Shanghai Commercial Bank, CTBC Bank and Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Transportation equipment 592 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Furniture and fixtures 46,823 — Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Right-of-use 278,230 266,650 Secured Syndicated Loans from China Development Bank and 6 others Collateral for long-term loans Total $ 21,909,250 $ 14,027,423 |
Financial Risk and Fair Value_2
Financial Risk and Fair Value Disclosures (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of detailed information about financial instruments [line items] | |
Categories of Financial Instruments | (1) Categories of financial instruments As of December 31, Financial Assets 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial assets at fair value through profit or loss $ 18,490,569 $ 17,138,461 Financial assets at fair value through other comprehensive income 15,189,600 17,683,960 Financial assets measured at amortized cost Cash and cash equivalents (cash on hand excluded) 173,812,754 132,547,415 Receivables 38,783,086 32,292,914 Refundable deposits 2,749,691 2,708,823 Other financial assets 869,308 6,353,768 Total $ 249,895,008 $ 208,725,341 As of December 31, Financial Liabilities 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Financial liabilities at fair value through profit or loss $ 438,397 $ 1,019,362 Financial liabilities measured at amortized cost Short-term loans — 13,530,000 Payables 58,893,871 52,393,399 Guarantee deposits (current portion included) 30,757,001 41,599,386 Bonds payable (current portion included) 28,184,687 38,359,352 Long-term loans (current portion included) 19,279,342 22,883,344 Lease liabilities 5,737,095 5,393,187 Other financial liabilities 21,449,487 — Total $ 164,739,880 $ 175,178,030 |
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, 2022 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 Payables $ 58,767,584 $ — $ — $ — $ 58,767,584 Guarantee deposits 238,416 3,867,087 169,419 26,482,079 30,757,001 Bonds payable (Note) 322,155 8,742,481 10,593,656 4,151,128 23,809,420 Long-term loans 3,246,153 8,425,744 7,798,280 3,031,293 22,501,470 Lease liabilities 658,092 1,222,822 1,207,385 4,299,914 7,388,213 Other financial liabilities 17,233,129 4,308,513 — — 21,541,642 Total $ 80,465,529 $ 26,566,647 $ 19,768,740 $ 37,964,414 $ 164,765,330 As of December 31, 2023 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 $ 13,780,612 $ — $ — $ — $ 13,780,612 Payables 52,202,821 — — — 52,202,821 Guarantee deposits 1,476,430 3,556,179 25,955,654 10,611,123 41,599,386 Bonds payable (Note) 14,797,772 10,980,506 12,321,345 2,132,963 40,232,586 Long-term loans 2,872,168 14,406,101 5,071,743 2,940,524 25,290,536 Lease liabilities 649,879 1,311,239 1,223,724 3,712,729 6,897,571 Total $ 85,779,682 $ 30,254,025 $ 44,572,466 $ 19,397,339 $ 180,003,512 |
Reconciliation for Fair Value Measurement in Level 3 Fair Value Hierarchy | Reconciliation 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 Convertible bonds 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, 2022 $ 3,584,326 $ 2,580,246 $ 3,464,652 $ 234,936 $ 9,864,160 $ 2,351,603 $ 151,859 $ 2,503,462 Recognized in profit (loss) (150,786 ) (328,602 ) 519,572 (53,225 ) (13,041 ) — — — Recognized in other comprehensive income (loss) — — — — — 1,076,117 30,688 1,106,805 Acquisition 192,258 485,256 625,542 — 1,303,056 — — — Disposal (186,579 ) (15,782 ) (194,572 ) (149,850 ) (546,783 ) — — — Return of capital — — (26,672 ) — (26,672 ) — — — Transfer out of Level 3 (326,577 ) — — — (326,577 ) — — — Exchange effect 86,166 144,140 237,811 4,613 472,730 — — — As of December 31, 2022 $ 3,198,808 $ 2,865,258 $ 4,626,333 $ 36,474 $ 10,726,873 $ 3,427,720 $ 182,547 $ 3,610,267 Financial assets at fair value through profit or loss Financial assets at fair value through Common stock Preferred stock Funds Convertible Others Total Common stock Preferred stock Total NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) (In Thousands) As of January 1, 2023 $ 3,198,808 $ 2,865,258 $ 4,626,333 $ 36,474 $ — $ 10,726,873 $ 3,427,720 $ 182,547 $ 3,610,267 Recognized in profit (loss) (312,149 ) (277,994 ) (617,764 ) (8,828 ) — (1,216,735 ) — — — Recognized in other comprehensive income (loss) — — — — — — (365,395 ) (7,484 ) (372,879 ) Acquisition 610,153 294,046 294,245 — 154,761 1,353,205 — — — Disposal — (89,997 ) — (27,740 ) — (117,737 ) — — — Return of capital (1,384 ) — (36,346 ) — — (37,730 ) — — — Transfer out of Level 3 (461,403 ) — — — — (461,403 ) — — — Exchange effect 2,230 (4,679 ) 8,428 94 (1,461 ) 4,612 — — — As of December 31, 2023 $ 3,036,255 $ 2,786,634 $ 4,274,896 $ — $ 153,300 $ 10,251,085 $ 3,062,325 $ 175,063 $ 3,237,388 |
Reconciliation for Fair Value Measurement in Level 3 Derivatives Financial Liabilities | Financial liabilities at fair Derivatives NT$ (In Thousands) As of January 1, 2022 $ 2,380,599 Recognized in profit (loss) (1,433,405 ) Derecognition (508,797 ) As of December 31, 2022 $ 438,397 Financial liabilities at fair Derivatives NT$ (In Thousands) As of January 1, 2023 $ 438,397 Recognized in profit (loss) 580,965 As of December 31, 2023 $ 1,019,362 |
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 follows: As of December 31, 2022 Category Valuation technique Significant unobservable inputs Quantitative information Interrelationship between inputs and fair value Sensitivity analysis of interrelationship between inputs and fair value 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, 2022 by NT$273 million and NT$198 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2022 by NT$248 million. Embedded derivatives in exchangeable bonds Binomial tree valuation model Volatility 36.46% The higher the volatility, the higher the estimated fair value is determined. A change of 5% in the volatility could decrease/increase the Company’s profit (loss) for the year ended December 31, 2022 by NT$77 million and NT$67 million, respectively. As of December 31, 2023 Category Valuation technique Significant unobservable inputs Quantitative information Interrelationship between inputs and fair value Sensitivity analysis of interrelationship between inputs and fair value 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, 2023 by NT$261 million and NT$199 million, respectively, and decrease/increase the Company’s other comprehensive income (loss) for the year ended December 31, 2023 by NT$214 million. Embedded derivatives in exchangeable bonds Binomial tree valuation model Volatility 27.70% The higher the volatility, the higher the estimated fair value is determined. A change of 5% in the volatility could decrease/increase the Company’s profit (loss) for the year ended December 31, 2023 by NT$119 million and NT$131 million, respectively. |
Recurring fair value measurement [member] | |
Disclosure of detailed information about financial instruments [line items] | |
Assets and Liabilities Measured and Recorded at Fair Value | a. Assets and liabilities measured and recorded at fair value on a recurring basis: As of December 31, 2022 Level 1 Level 2 Level 3 Total NT$ NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) (In Thousands) Financial assets: Financial assets at fair value through profit or loss, current $ 669,444 $ — $ 36,474 $ 705,918 Financial assets at fair value through profit or loss, noncurrent 6,626,088 468,164 10,690,399 17,784,651 Financial assets at fair value through other comprehensive income, current 3,213,057 — — 3,213,057 Financial assets at fair value through other comprehensive income, noncurrent 8,366,276 — 3,610,267 11,976,543 Financial liabilities: Financial liabilities at fair value through profit or loss, current — — 438,397 438,397 As of December 31, 2023 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 $ 443,601 $ — $ — $ 443,601 Financial assets at fair value through profit or loss, noncurrent 6,424,475 19,300 10,251,085 16,694,860 Financial assets at fair value through other comprehensive income, current 5,753,379 — — 5,753,379 Financial assets at fair value through other comprehensive income, noncurrent 8,693,193 — 3,237,388 11,930,581 Financial liabilities: Financial liabilities at fair value through profit or loss, current — — 1,019,362 1,019,362 |
Not measured at fair value in statement of financial position but for which fair value is disclosed [member] | |
Disclosure of detailed information about financial instruments [line items] | |
Assets and Liabilities Measured and Recorded at Fair Value | As of December 31, 2022 Fair value measurements during reporting period Items Fair value Level 1 Level 2 Level 3 Carrying NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) Bonds payables (current portion included) $ 28,346,985 $ 22,916,330 $ 5,430,655 $ — $ 28,184,687 Long-term loans (current portion included) 19,279,342 — 19,279,342 — 19,279,342 As of December 31, 2023 Fair value measurements during reporting period Items Fair value Level 1 Level 2 Level 3 Carrying NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) NT$ (In Thousands) Bonds payables (current portion included) $ 38,367,168 $ 32,827,211 $ 5,539,957 $ — $ 38,359,352 Long-term loans (current portion included) 22,883,344 — 22,883,344 — 22,883,344 |
Operating Segment Information (
Operating Segment Information (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Disclosure of operating segments [abstract] | |
Geographic Non-current Assets Information | As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Taiwan $ 130,812,383 $ 158,066,796 Singapore 29,080,766 55,322,448 China (includes Hong Kong) 37,213,538 33,424,815 Japan 10,736,562 13,415,669 Others 20,638 76,508 Total $ 207,863,887 $ 260,306,236 |
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, 2021, 2022 and 2023 were as follows: For the years ended December 31, 2021 2022 2023 NT$ NT$ NT$ (In Thousands) (In Thousands) (In Thousands) Customer A $ 21,935,208 $ 24,061,849 $ 16,615,745 Customer B $ 14,707,370 $ 22,226,167 $ 29,242,973 |
Capital Management (Tables)
Capital Management (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Capital Management [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, 2022 and 2023 were as follows: As of December 31, 2022 2023 NT$ NT$ (In Thousands) (In Thousands) Total liabilities $ 201,834,635 $ 202,859,864 Less: Cash and cash equivalents (173,818,777 ) (132,553,615 ) Net debt 28,015,858 70,306,249 Total equity 322,810,948 343,716,968 Total capital $ 350,826,806 $ 414,023,217 Debt to capital ratios 7.99% 16.98% |
Summary of Material Accountin_4
Summary of Material Accounting Policies - Consolidated Entities (Detail) | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
UMC GROUP (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | IC Sales | |
Percentage of ownership | 100% | 100% |
UNITED MICROELECTRONICS (EUROPE) B.V. (UME BV) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Marketing support activities | |
Percentage of ownership | 100% | 100% |
UMC CAPITAL CORP. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
GREEN EARTH LIMITED (GE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
TLC CAPITAL CO., LTD. (TLC) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Venture capital | |
Percentage of ownership | 100% | 100% |
UMC INVESTMENT (SAMOA) LIMITED [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
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% | 100% |
UMC KOREA CO., LTD. (UMC KOREA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Marketing support activities | |
Percentage of ownership | 100% | 100% |
OMNI GLOBAL LIMITED (OMNI) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
SINO PARAGON LIMITED [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
BEST ELITE INTERNATIONAL LIMITED (BE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
UNITED SEMICONDUCTOR JAPAN CO., LTD. (USJC) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | UMC | |
Business nature | Sales and manufacturing of integrated circuits | |
Percentage of ownership | 100% | 100% |
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% | 80.14% |
SOARING CAPITAL CORP. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | TLC | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
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% | 100% |
UNITED MICROCHIP CORPORATION [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | GE | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | FORTUNE | |
Business nature | Energy technical services | |
Percentage of ownership | 99.01% | 100% |
EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | TERA ENERGY | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
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% | 100% |
UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Research and development | |
Percentage of ownership | 100% | 100% |
ECP VITA PTE. LTD. [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | OMNI | |
Business nature | Insurance | |
Percentage of ownership | 100% | 100% |
WAVETEK MICROELECTRONICS CORPORATION (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | WAVETEK | |
Business nature | Marketing service | |
Percentage of ownership | 100% | 0% |
WAVETEK MICROELECTRONICS INVESTMENT (SAMOA) LIMITED (WAVETEK-SAMOA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | WAVETEK | |
Business nature | Investment holding | |
Percentage of ownership | 0% | 100% |
WAVETEK MICROELECTRONICS CORPORATION (USA) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | WAVETEK-SAMOA | |
Business nature | Marketing service | |
Percentage of ownership | 0% | 100% |
INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | BE | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
OAKWOOD ASSOCIATES LIMITED (OAKWOOD) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | INFOSHINE | |
Business nature | Investment holding | |
Percentage of ownership | 100% | 100% |
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 | 99.9985% | 99.9985% |
UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) [member] | ||
Disclosure of subsidiaries [line items] | ||
Investor | HJ | |
Business nature | Integrated circuits design services | |
Percentage of ownership | 100% | 100% |
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 | 100% | 71.86% |
Summary of Material Accountin_5
Summary of Material Accounting Policies - Additional Information (Detail) - Dec. 29, 2023 | USD ($) | Exchange_Rate |
Disclosure Of Initial Application Of Standards Or Interpretations [Abstract] | ||
Convenience translation into U.S. Dollars, rate of USD1.00 | 1 | 30.62 |
Summary of Material Accountin_6
Summary of Material Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Detail) | 12 Months Ended |
Dec. 31, 2023 | |
Buildings [member] | Bottom of range [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 20 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] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 6 years |
Transportation equipment [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 6 years |
Furniture and fixtures [member] | |
Disclosure of detailed information about property, plant and equipment [line items] | |
Estimated useful lives of the assets | 6 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 Material Accountin_7
Summary of Material Accounting Policies - Intangible Assets - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2023 | |
Software [member] | |
Disclosure of initial application of standards or interpretations [line items] | |
Estimated useful life of intangible assets | 3 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 |
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) |
Contents of Significant Accou_3
Contents of Significant Accounts - Cash and Cash Equivalents (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($) |
Cash And Cash Equivalents [Abstract] | ||||||
Cash on hand and petty cash | $ 6,200 | $ 6,023 | ||||
Checking and savings accounts | 50,322,942 | 42,422,443 | ||||
Time deposits | 80,276,114 | 125,467,386 | ||||
Repurchase agreements collateralized by government bonds and corporate notes | 1,948,359 | 5,922,925 | ||||
Total | $ 132,553,615 | $ 4,328,988 | $ 173,818,777 | $ 5,676,642 | $ 132,622,131 | $ 94,048,036 |
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, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of financial assets [line items] | |||
Total | $ 17,138,461 | $ 18,490,569 | |
Current | 443,601 | $ 14,487 | 705,918 |
Noncurrent | 16,694,860 | $ 545,227 | 17,784,651 |
Common stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 9,170,230 | 10,275,563 | |
Preferred stocks [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 2,862,119 | 2,939,939 | |
Funds [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 4,472,097 | 5,044,702 | |
Convertible bonds [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | 480,715 | 230,365 | |
Others [member] | |||
Disclosure of financial assets [line items] | |||
Financial assets mandatorily measured at fair value through profit or loss | $ 153,300 | $ 0 |
Contents of Significant Accou_5
Contents of Significant Accounts - Financial Assets at Fair Value through Other Comprehensive Income (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of financial assets [line items] | |||
Financial assets at fair value through other comprehensive income, current | $ 5,753,379 | $ 187,896 | $ 3,213,057 |
Financial assets at fair value through other comprehensive income, non-current | 11,930,581 | $ 389,634 | 11,976,543 |
Total | 17,683,960 | 15,189,600 | |
Common stocks [member] | |||
Disclosure of financial assets [line items] | |||
Total | 17,508,897 | 15,007,053 | |
Preferred stocks [member] | |||
Disclosure of financial assets [line items] | |||
Total | $ 175,063 | $ 182,547 |
Contents of Significant Accou_6
Contents of Significant Accounts - Summary of Fair Value of Each Investment in Equity Instrument (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
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 | $ 5,753,000 | $ 3,213,000 |
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 | 0 | 2,316,197 |
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 | 2,514,120 | 2,847,385 |
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 | 2,100,977 | 1,023,266 |
NOVATEK MICROELECTRONICS CORP. (NOVATEK) [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 | 8,501,851 | 5,188,267 |
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 | 548,205 | 580,335 |
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 | 175,063 | 182,547 |
CHIPBOND TECHNOLOGY CORPORATION [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 | $ 3,843,744 | $ 3,051,603 |
Contents of Significant Accou_7
Contents of Significant Accounts - Summary of Income Recognized in Profit or Loss from Equity Instruments Designated as Fair Value Through Other Comprehensive Income (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Dividend Income [Abstract] | ||
Held at end of period | $ 1,052,336 | $ 1,431,931 |
Derecognized during the period | 142,535 | 0 |
Total | $ 1,194,871 | $ 1,431,931 |
Contents of Significant Accou_8
Contents of Significant Accounts - Summary of Details on Derecognition of Such Investments (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disposed and Derecognized Investments Designated as Fair Value Through Other Comprehensive Income [Abstract] | |||
Fair value on the date of disposal | $ 3,035,999 | $ 0 | $ 0 |
Cumulative gains (losses) reclassified to retained earnings due to derecognition | $ (1,628,388) | $ 0 | $ 0 |
Contents of Significant Accou_9
Contents of Significant Accounts - Financial Assets Measured at Amortized Cost (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Financial Assets Measured At Amortized Cost [Abstract] | |||
Time deposits with original maturities over three months | $ 6,353,768 | $ 849,308 | |
Bonds | 0 | 20,000 | |
Total | 6,353,768 | 869,308 | |
Current | 6,131,077 | $ 200,231 | 861,817 |
Non-current | $ 222,691 | $ 7,273 | $ 7,491 |
Contents of Significant Acco_10
Contents of Significant Accounts - Accounts Receivable, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of financial assets [line items] | |||
Accounts receivable | $ 29,237,550 | $ 954,851 | $ 36,444,510 |
Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 29,316,612 | 36,653,611 | |
Loss Allowance [member] | |||
Disclosure of financial assets [line items] | |||
Less: loss allowance | $ (79,062) | $ (209,101) |
Contents of Significant Acco_11
Contents of Significant Accounts - Aging Analysis of Accounts Receivable (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of financial assets [line items] | |||
Accounts receivable | $ 29,237,550 | $ 954,851 | $ 36,444,510 |
Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 29,316,612 | 36,653,611 | |
Neither past due [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 25,707,008 | 30,545,437 | |
Past due [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 3,609,604 | 6,108,174 | |
Past due [member] | Less than or equal to 30 days [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 3,008,126 | 5,303,765 | |
Past due [member] | 31 to 60 days [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 78,668 | 130,408 | |
Past due [member] | 61 to 90 days [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 5,599 | 3,247 | |
Past due [member] | 91 to 120 days [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | 0 | 7,886 | |
Past due [member] | Greater than or equal to 121 days [member] | Cost [member] | |||
Disclosure of financial assets [line items] | |||
Accounts receivable | $ 517,211 | $ 662,868 |
Contents of Significant Acco_12
Contents of Significant Accounts - Movement of Loss Allowance (Detail) - Accounts receivable [member] - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure of financial assets [line items] | ||
Beginning balance | $ 209,101 | $ 194,491 |
Net recognition (reversal) for the period | (130,039) | 14,610 |
Ending balance | $ 79,062 | $ 209,101 |
Contents of Significant Acco_13
Contents of Significant Accounts - Accounts Receivable, Net - Additional Information (Detail) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 |
Top of range [member] | |||
Disclosure of financial assets [line items] | |||
Expected credit loss rate | 0.20% | 0.20% | 0.20% |
Contents of Significant Acco_14
Contents of Significant Accounts - Inventories, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Classes Of Inventories [Abstract] | |||
Raw materials | $ 10,995,569 | $ 6,335,428 | |
Supplies and spare parts | 6,443,172 | 7,161,216 | |
Work in process | 15,560,517 | 14,897,926 | |
Finished goods | 2,713,300 | 2,675,390 | |
Total | $ 35,712,558 | $ 1,166,315 | $ 31,069,960 |
Contents of Significant Acco_15
Contents of Significant Accounts - Inventories, Net - Additional Information (Detail) - TWD ($) | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Classes Of Inventories [Abstract] | |||
Inventories recognized in operating costs | $ 136,902,000,000 | $ 145,979,000,000 | $ 135,856,000,000 |
Write-down of inventories | 1,148,000,000 | 98,000,000 | |
Inventories pledged | $ 0 | $ 0 | |
Reversal of write-down of inventories | $ 426,000,000 |
Contents of Significant Acco_16
Contents of Significant Accounts - Details of Investments Accounted for Under the Equity Method (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2023 USD ($) | |
Investments in associates and joint ventures [line items] | |||
Amount | $ 32,785,800 | $ 26,504,913 | $ 1,070,731 |
SILICON INTEGRATED SYSTEMS CORP. (SIS) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 2,373,060 | $ 0 | |
Percentage of ownership or voting rights, Associates | 19.02% | 0% | |
FARADAY TECHNOLOGY CORP. (FARADAY) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 1,990,073 | $ 1,862,245 | |
Percentage of ownership or voting rights, Associates | 13.78% | 13.78% | |
UNIMICRON TECHNOLOGY CORP. (UNIMICRON) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 13,644,560 | $ 13,285,169 | |
Percentage of ownership or voting rights, Associates | 13.05% | 13.27% | |
MTIC HOLDINGS PTE. LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 0 | $ 0 | |
Percentage of ownership or voting rights, Associates | 45.44% | 45.44% | |
UNITECH CAPITAL INC. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 625,667 | $ 426,070 | |
Percentage of ownership or voting rights, Associates | 42% | 42% | |
TRIKNIGHT CAPITAL CORPORATION (TRIKNIGHT) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 2,109,906 | $ 2,117,678 | |
Percentage of ownership or voting rights, Associates | 40% | 40% | |
HSUN CHIEH CAPITAL CORP. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 235,098 | $ 210,690 | |
Percentage of ownership or voting rights, Associates | 40% | 40% | |
PURIUMFIL INC. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 11,474 | $ 14,622 | |
Percentage of ownership or voting rights, Associates | 40% | 40% | |
HSUN CHIEH INVESTMENT CO., LTD. (HSUN CHIEH) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 4,126,878 | $ 2,980,984 | |
Percentage of ownership or voting rights, Associates | 36.49% | 36.49% | |
YANN YUAN INVESTMENT CO., LTD. (YANN YUAN) [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 7,516,327 | $ 5,455,743 | |
Percentage of ownership or voting rights, Associates | 26.78% | 26.78% | |
UNITED LED CORPORATION HONG KONG LIMITED [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 93,793 | $ 97,156 | |
Percentage of ownership or voting rights, Associates | 25.14% | 25.14% | |
VSENSE CO., LTD. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 0 | $ 0 | |
Percentage of ownership or voting rights, Associates | 23.98% | 23.98% | |
TRANSLINK CAPITAL PARTNERS I, L.P. [member] | |||
Investments in associates and joint ventures [line items] | |||
Amount | $ 58,964 | $ 54,556 | |
Percentage of ownership or voting rights, Associates | 10.38% | 10.38% |
Contents of Significant Acco_17
Contents of Significant Accounts - Investments Accounted For Under the Equity Method - Additional Information (Detail) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended | |||||||
Jan. 06, 2023 shares | Dec. 31, 2023 TWD ($) | Jun. 30, 2023 TWD ($) | Apr. 30, 2023 TWD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2023 USD ($) | |
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | $ 32,785,800 | $ 32,785,800 | $ 26,504,913 | $ 1,070,731 | |||||
Proceeds from capital reduction of investments accounted for under the equity method | 1,303,106 | $ 42,557 | 0 | $ 0 | |||||
HSUN CHIEH INVESTMENT CO., LTD. (HSUN CHIEH) [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | 4,126,878 | 4,126,878 | 2,980,984 | ||||||
Proceeds from capital reduction of investments accounted for under the equity method | $ 343,000 | ||||||||
TRIKNIGHT CAPITAL CORPORATION (TRIKNIGHT) [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | 2,109,906 | 2,109,906 | 2,117,678 | ||||||
Proceeds from capital reduction of investments accounted for under the equity method | 560,000 | $ 400,000 | |||||||
UNIMICRON TECHNOLOGY CORP. (UNIMICRON) [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | 13,644,560 | 13,644,560 | 13,285,169 | ||||||
UNIMICRON TECHNOLOGY CORP. (UNIMICRON) [member] | SUBTRON TECHNOLOGY CO., LTD. (SUBTRON) [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Number of shares exchanged | shares | 23,000,000 | ||||||||
Number of shares allotted | shares | 5,000,000 | ||||||||
Share exchange description | 1 common share of SUBTRON to exchange 0.219 common shares of UNIMICRON | ||||||||
Aggregated individually immaterial associates [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Exchange differences arising from translation of the foreign entity | (3,000) | 103,000 | $ (30,000) | ||||||
Investments with published price quotations [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | 18,008,000 | 18,008,000 | 15,147,000 | ||||||
Investments with published price quotations [member] | Fair value [member] | |||||||||
Investments in associates [Line Items] | |||||||||
Investments accounted for using equity method for which there are published price quotations | $ 53,726,000 | $ 53,726,000 | $ 28,416,000 |
Contents of Significant Acco_18
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, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Disclosure of associates [line items] | ||||
Profit from continuing operations | $ 4,307,614 | $ 140,680 | $ 1,626,103 | $ 5,193,495 |
Aggregated individually immaterial associates [member] | ||||
Disclosure of associates [line items] | ||||
Profit from continuing operations | 4,307,614 | 1,626,103 | 5,193,495 | |
Other comprehensive income (loss) | 1,540,436 | (1,706,960) | 2,965,202 | |
Total comprehensive income (loss) | $ 5,848,050 | $ (80,857) | $ 8,158,697 |
Contents of Significant Acco_19
Contents of Significant Accounts - Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | $ 170,982,066 | |||
Depreciation | 37,757,556 | $ 1,233,101 | $ 41,328,374 | $ 44,179,632 |
Ending balance | 239,123,248 | $ 7,809,381 | 170,982,066 | |
Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 169,163,819 | |||
Ending balance | 237,376,554 | 169,163,819 | ||
Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,818,247 | |||
Ending balance | 1,746,694 | 1,818,247 | ||
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 | 1,056,441,607 | 966,403,970 | ||
Additions | 82,436,942 | 72,596,881 | ||
Disposals | 6,633,773 | 6,560,736 | ||
Transfers and reclassifications | 24,842,622 | 7,734,514 | ||
Exchange effect | (4,418,722) | 16,266,978 | ||
Ending balance | 1,152,668,676 | 1,056,441,607 | 966,403,970 | |
Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 4,329,670 | 4,284,102 | ||
Disposals | 660 | |||
Transfers and reclassifications | 54,469 | 20,681 | ||
Exchange effect | (11,434) | 25,547 | ||
Ending balance | 4,372,705 | 4,329,670 | 4,284,102 | |
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 | (887,277,788) | (838,414,466) | ||
Depreciation | 36,948,137 | 40,471,553 | ||
Disposals | (6,592,557) | (6,430,846) | ||
Transfers and reclassifications | (4,928) | |||
Exchange effect | (2,341,246) | 14,827,543 | ||
Ending balance | (915,292,122) | (887,277,788) | (838,414,466) | |
Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | (2,511,423) | (2,331,903) | ||
Depreciation | 118,339 | 154,873 | ||
Disposals | (660) | |||
Transfers and reclassifications | 6,395 | |||
Exchange effect | (3,751) | 18,912 | ||
Ending balance | (2,626,011) | (2,511,423) | (2,331,903) | |
Land [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,470,216 | |||
Ending balance | 1,430,338 | 1,470,216 | ||
Land [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 545,787 | |||
Ending balance | 539,703 | 545,787 | ||
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 | 1,470,216 | 1,491,343 | ||
Additions | 0 | |||
Disposals | 0 | |||
Transfers and reclassifications | 0 | |||
Exchange effect | (39,878) | (21,127) | ||
Ending balance | 1,430,338 | 1,470,216 | 1,491,343 | |
Land [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 545,787 | 549,010 | ||
Transfers and reclassifications | 0 | |||
Exchange effect | (6,084) | (3,223) | ||
Ending balance | 539,703 | 545,787 | 549,010 | |
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 | |||
Disposals | 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 | 0 | ||
Depreciation | 0 | |||
Exchange effect | 0 | |||
Ending balance | 0 | 0 | 0 | |
Buildings [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 14,866,263 | |||
Ending balance | 14,341,723 | 14,866,263 | ||
Buildings [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,240,435 | |||
Ending balance | 1,143,849 | 1,240,435 | ||
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 | 37,597,769 | 36,827,480 | ||
Additions | 223,177 | 325,943 | ||
Disposals | 12,160 | 69,897 | ||
Transfers and reclassifications | 902,122 | 219,666 | ||
Exchange effect | (341,045) | 294,577 | ||
Ending balance | 38,369,863 | 37,597,769 | 36,827,480 | |
Buildings [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 2,443,247 | 2,422,389 | ||
Transfers and reclassifications | 0 | (1,226) | ||
Exchange effect | (2,330) | 22,084 | ||
Ending balance | 2,440,917 | 2,443,247 | 2,422,389 | |
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 | (22,731,506) | (21,184,969) | ||
Depreciation | 1,416,727 | 1,443,545 | ||
Disposals | (12,160) | (69,489) | ||
Transfers and reclassifications | 161 | |||
Exchange effect | (107,933) | 172,320 | ||
Ending balance | (24,028,140) | (22,731,506) | (21,184,969) | |
Buildings [member] | Accumulated depreciation, amortisation and impairment [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | (1,202,812) | (1,095,113) | ||
Depreciation | 94,944 | 94,644 | ||
Transfers and reclassifications | (161) | |||
Exchange effect | (688) | 13,216 | ||
Ending balance | (1,297,068) | (1,202,812) | (1,095,113) | |
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] | ||||
Beginning balance | 96,081,903 | |||
Ending balance | 137,410,147 | 96,081,903 | ||
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] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 953,819,688 | 897,806,699 | ||
Additions | 0 | |||
Disposals | 6,475,636 | 6,391,003 | ||
Transfers and reclassifications | 77,170,979 | 46,548,734 | ||
Exchange effect | (3,016,210) | 15,855,258 | ||
Ending balance | 1,021,498,821 | 953,819,688 | 897,806,699 | |
Machinery and equipment [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 6,345 | 0 | ||
Transfers and reclassifications | 0 | 6,345 | ||
Exchange effect | 0 | |||
Ending balance | 6,345 | 6,345 | 0 | |
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 | (857,737,785) | (810,904,881) | ||
Depreciation | 35,031,869 | 38,565,229 | ||
Disposals | (6,468,067) | (6,331,532) | ||
Transfers and reclassifications | (4,913) | |||
Exchange effect | (2,212,913) | 14,604,120 | ||
Ending balance | (884,088,674) | (857,737,785) | (810,904,881) | |
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 | (6,345) | 0 | ||
Depreciation | 0 | |||
Transfers and reclassifications | 6,345 | |||
Exchange effect | 0 | |||
Ending balance | (6,345) | (6,345) | 0 | |
Transportation equipment [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 13,326 | |||
Ending balance | 15,455 | 13,326 | ||
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 | 64,923 | 55,959 | ||
Additions | 0 | |||
Disposals | 0 | |||
Transfers and reclassifications | 7,104 | 8,154 | ||
Exchange effect | (315) | 810 | ||
Ending balance | 71,712 | 64,923 | 55,959 | |
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 | (51,597) | (47,108) | ||
Depreciation | 4,924 | 3,946 | ||
Disposals | 0 | |||
Exchange effect | (264) | 543 | ||
Ending balance | (56,257) | (51,597) | (47,108) | |
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] | ||||
Beginning balance | 1,364,476 | |||
Ending balance | 1,817,455 | 1,364,476 | ||
Furniture and fixtures [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 32,025 | |||
Ending balance | 63,142 | 32,025 | ||
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 | 8,061,993 | 7,305,174 | ||
Additions | 0 | |||
Disposals | 112,396 | 27,782 | ||
Transfers and reclassifications | 953,582 | 730,317 | ||
Exchange effect | (29,711) | 54,284 | ||
Ending balance | 8,873,468 | 8,061,993 | 7,305,174 | |
Furniture and fixtures [member] | Cost [member] | Operating Leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 1,334,291 | 1,312,703 | ||
Disposals | 660 | |||
Transfers and reclassifications | 54,469 | 15,562 | ||
Exchange effect | (3,020) | 6,686 | ||
Ending balance | 1,385,740 | 1,334,291 | 1,312,703 | |
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 | (6,697,517) | (6,222,383) | ||
Depreciation | 490,468 | 456,017 | ||
Disposals | (112,330) | (27,421) | ||
Transfers and reclassifications | (176) | |||
Exchange effect | (19,642) | 46,714 | ||
Ending balance | (7,056,013) | (6,697,517) | (6,222,383) | |
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 | (1,302,266) | (1,236,790) | ||
Depreciation | 23,395 | 60,229 | ||
Disposals | (660) | |||
Transfers and reclassifications | 211 | |||
Exchange effect | (3,063) | 5,696 | ||
Ending balance | (1,322,598) | (1,302,266) | (1,236,790) | |
Leasehold improvement [member] | Property, plant and equipment not subject to operating leases [member] | ||||
Disclosure of detailed information about property, plant and equipment [line items] | ||||
Beginning balance | 3,692 | |||
Ending balance | 2,785 | 3,692 | ||
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 | 63,075 | 61,282 | ||
Additions | 0 | |||
Disposals | 0 | 2,414 | ||
Transfers and reclassifications | 3,379 | 421 | ||
Exchange effect | (631) | 3,786 | ||
Ending balance | 65,823 | 63,075 | 61,282 | |
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 | (59,383) | (55,125) | ||
Depreciation | 4,149 | 2,816 | ||
Disposals | 0 | (2,404) | ||
Exchange effect | (494) | 3,846 | ||
Ending balance | (63,038) | (59,383) | (55,125) | |
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] | ||||
Beginning balance | 55,363,943 | |||
Ending balance | 82,358,651 | 55,363,943 | ||
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 | 55,363,943 | 22,856,033 | ||
Additions | 82,213,765 | 72,270,938 | ||
Disposals | 33,581 | 69,640 | ||
Transfers and reclassifications | (54,194,544) | (39,772,778) | ||
Exchange effect | (990,932) | 79,390 | ||
Ending balance | 82,358,651 | 55,363,943 | $ 22,856,033 | |
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 | 0 | |||
Depreciation | 0 | |||
Disposals | 0 | |||
Exchange effect | 0 | |||
Ending balance | $ 0 | $ 0 |
Contents of Significant Acco_20
Contents of Significant Accounts - Summary of Interest Expense Capitalized (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure Of Detailed Information About Interest Expense Capitalized [Line Items] | ||
Interest expense capitalized | $ 9,355 | $ 1,661 |
Bottom of range [member] | ||
Disclosure Of Detailed Information About Interest Expense Capitalized [Line Items] | ||
Interest rates applied | 1.48% | 1.44% |
Top of range [member] | ||
Disclosure Of Detailed Information About Interest Expense Capitalized [Line Items] | ||
Interest rates applied | 1.65% | 1.61% |
Contents of Significant Acco_21
Contents of Significant Accounts - Leases (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2023 USD ($) | |
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | $ 691,080 | $ 701,948 | |
Right-of-use assets | 7,000,355 | 7,611,991 | $ 228,620 |
Current | 514,324 | 537,314 | 16,797 |
Noncurrent | 4,878,863 | 5,199,781 | $ 159,336 |
Total | 5,393,187 | 5,737,095 | |
Land [member] | |||
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | 377,593 | 359,007 | |
Right-of-use assets | 5,318,986 | 5,714,166 | |
Buildings [member] | |||
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | 93,610 | 119,641 | |
Right-of-use assets | 156,483 | 124,420 | |
Machinery and equipment [member] | |||
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | 203,606 | 206,445 | |
Right-of-use assets | 1,506,824 | 1,748,244 | |
Transportation equipment [member] | |||
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | 13,267 | 12,287 | |
Right-of-use assets | 16,356 | 21,485 | |
Other property, plant and equipment [member] | |||
Disclosure Of Lease By Lessee [Line Items] | |||
Depreciation | 3,004 | 4,568 | |
Right-of-use assets | $ 1,706 | $ 3,676 |
Contents of Significant Acco_22
Contents of Significant Accounts - Leases - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosures Of Leases [Abstract] | ||
Addition to right of use assets | $ 206 | $ 1,130 |
Contents of Significant Acco_23
Contents of Significant Accounts - Intangible Assets (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | $ 4,275,200 | ||
Ending balance | 4,372,555 | $ 142,801 | $ 4,275,200 |
Net carrying amount: | |||
Intangible assets | 4,372,555 | 4,275,200 | |
Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 12,061,215 | 12,699,284 | |
Additions | 2,746,105 | 3,194,414 | |
Write-off | (3,957,885) | (4,071,911) | |
Reclassifications | (5,855) | (10,721) | |
Exchange effect | (278,309) | 250,149 | |
Ending balance | 10,565,271 | 12,061,215 | |
Net carrying amount: | |||
Intangible assets | 10,565,271 | 12,061,215 | |
Accumulated amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | (7,786,015) | (9,054,351) | |
Amortization | 2,555,610 | 2,689,600 | |
Write-off | (3,957,885) | (4,071,911) | |
Exchange effect | (191,024) | 113,975 | |
Ending balance | (6,192,716) | (7,786,015) | |
Net carrying amount: | |||
Intangible assets | (6,192,716) | (7,786,015) | |
Goodwill [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 7,614 | ||
Ending balance | 7,614 | 7,614 | |
Net carrying amount: | |||
Intangible assets | 7,614 | 7,614 | |
Goodwill [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 15,012 | 15,012 | |
Additions | 0 | ||
Write-off | 0 | ||
Reclassifications | 0 | ||
Exchange effect | 0 | ||
Ending balance | 15,012 | 15,012 | |
Net carrying amount: | |||
Intangible assets | 15,012 | 15,012 | |
Goodwill [member] | Accumulated amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | (7,398) | (7,398) | |
Amortization | 0 | ||
Write-off | 0 | ||
Exchange effect | 0 | ||
Ending balance | (7,398) | (7,398) | |
Net carrying amount: | |||
Intangible assets | (7,398) | (7,398) | |
Software [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 2,980,390 | ||
Ending balance | 2,575,246 | 2,980,390 | |
Net carrying amount: | |||
Intangible assets | 2,575,246 | 2,980,390 | |
Software [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 5,669,787 | 4,845,037 | |
Additions | 1,399,699 | 2,713,534 | |
Write-off | (1,498,642) | (1,857,289) | |
Reclassifications | (5,855) | (10,721) | |
Exchange effect | (98,912) | (20,774) | |
Ending balance | 5,466,077 | 5,669,787 | |
Net carrying amount: | |||
Intangible assets | 5,466,077 | 5,669,787 | |
Software [member] | Accumulated amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | (2,689,397) | (2,913,824) | |
Amortization | 1,741,898 | 1,656,765 | |
Write-off | (1,498,642) | (1,857,289) | |
Exchange effect | (41,822) | (23,903) | |
Ending balance | (2,890,831) | (2,689,397) | |
Net carrying amount: | |||
Intangible assets | (2,890,831) | (2,689,397) | |
Patent and technology license fee [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 824,919 | ||
Ending balance | 864,576 | 824,919 | |
Net carrying amount: | |||
Intangible assets | 864,576 | 824,919 | |
Patent and technology license fee [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 3,422,432 | 4,491,164 | |
Additions | 346,896 | 0 | |
Write-off | (1,826,383) | (1,344,682) | |
Reclassifications | 0 | ||
Exchange effect | (169,404) | 275,950 | |
Ending balance | 1,773,541 | 3,422,432 | |
Net carrying amount: | |||
Intangible assets | 1,773,541 | 3,422,432 | |
Patent and technology license fee [member] | Accumulated amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | (2,597,513) | (3,324,667) | |
Amortization | 277,768 | 475,870 | |
Write-off | (1,826,383) | (1,344,682) | |
Exchange effect | (139,933) | 141,658 | |
Ending balance | (908,965) | (2,597,513) | |
Net carrying amount: | |||
Intangible assets | (908,965) | (2,597,513) | |
Others [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 462,277 | ||
Ending balance | 925,119 | 462,277 | |
Net carrying amount: | |||
Intangible assets | 925,119 | 462,277 | |
Others [member] | Cost [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | 2,953,984 | 3,348,071 | |
Additions | 999,510 | 480,880 | |
Write-off | (632,860) | (869,940) | |
Reclassifications | 0 | ||
Exchange effect | (9,993) | (5,027) | |
Ending balance | 3,310,641 | 2,953,984 | |
Net carrying amount: | |||
Intangible assets | 3,310,641 | 2,953,984 | |
Others [member] | Accumulated amortisation and impairment [member] | |||
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] | |||
Beginning balance | (2,491,707) | (2,808,462) | |
Amortization | 535,944 | 556,965 | |
Write-off | (632,860) | (869,940) | |
Exchange effect | (9,269) | (3,780) | |
Ending balance | (2,385,522) | (2,491,707) | |
Net carrying amount: | |||
Intangible assets | $ (2,385,522) | $ (2,491,707) |
Contents of Significant Acco_24
Contents of Significant Accounts - Amortization Amounts of Intangible Assets (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Operating costs [member] | ||
Disclosure Of Intangible Assets [Line Items] | ||
Amortization amounts of intangible assets | $ 1,144,960 | $ 1,329,850 |
Operating expenses [member] | ||
Disclosure Of Intangible Assets [Line Items] | ||
Amortization amounts of intangible assets | $ 1,410,650 | $ 1,359,750 |
Contents of Significant Acco_25
Contents of Significant Accounts - Short-Term Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of detailed information about borrowings [line items] | |||
Short-term loans | $ 13,530,000 | $ 441,868 | $ 0 |
Interest rates applied | 0% | ||
Bottom of range [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Interest rates applied | 1.69% | 1.69% | |
Top of range [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Interest rates applied | 2.65% | 2.65% | |
Unsecured bank loans [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Short-term loans | $ 13,530,000 | $ 0 |
Contents of Significant Acco_26
Contents of Significant Accounts - Financial Liabilities at Fair Value through Profit or Loss, Current (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Current Financial Liabilities At Fair Value Through Profit Or Loss [Line Items] | |||
Financial liabilities at fair value through profit or loss, current | $ 1,019,362 | $ 33,291 | $ 438,397 |
Embedded derivatives in exchangeable bonds [Member] | |||
Current Financial Liabilities At Fair Value Through Profit Or Loss [Line Items] | |||
Financial liabilities at fair value through profit or loss, current | $ 1,019,362 | $ 438,397 |
Contents of Significant Acco_27
Contents of Significant Accounts - Bonds Payable (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | $ 38,359,352 | $ 28,184,687 | |
Less: Current or exchangeable portion due within one year | (13,779,701) | (5,101,591) | |
Net | 24,579,651 | $ 802,732 | 23,083,096 |
Less: Discounts on bonds payable [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | (498,021) | (672,686) | |
Unsecured domestic bonds payable [member] | Cost [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | 33,100,000 | 23,100,000 | |
Unsecured exchangeable bonds payable [member] | Cost [member] | |||
Disclosure of detailed information about bonds [Line Items] | |||
Bonds payable | $ 5,757,373 | $ 5,757,373 |
Contents of Significant Acco_28
Contents of Significant Accounts - Summary of Terms and Conditions of Bonds (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure of detailed information about bonds [Line Items] | ||
Issued amount | $ 38,359,352 | $ 28,184,687 |
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 was paid annually and the principal was fully repaid in March 2022. | |
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 was paid annually and the principal was fully repaid in October 2022. | |
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. | |
Domestic unsecured corporate bonds maturing in April 2026 [Member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year | |
Issuance date | In late April 2021 | |
Issued amount | $ 5,500,000 | |
Coupon rate | 0.57% | |
Repayment | Interest will be paid annually and the principal will be repayable in April 2026 upon maturity. | |
Domestic unsecured corporate bonds maturing in April 2028 [Member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Seven-year | |
Issuance date | In late April 2021 | |
Issued amount | $ 2,000,000 | |
Coupon rate | 0.63% | |
Repayment | Interest will be paid annually and the principal will be repayable in April 2028 upon maturity. | |
Domestic unsecured corporate bonds maturing in April 2031 [Member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Ten-year (Green bond) | |
Issuance date | In late April 2021 | |
Issued amount | $ 2,100,000 | |
Coupon rate | 0.68% | |
Repayment | Interest will be paid annually and the principal will be repayable in April 2031 upon maturity. | |
Domestic unsecured corporate bonds maturing in December 2026 [member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year | |
Issuance date | In mid-December 2021 | |
Issued amount | $ 5,000,000 | |
Coupon rate | 0.63% | |
Repayment | Interest will be paid annually and the principal will be repayable in December 2026 upon maturity. | |
Domestic Unsecured Corporate Bonds Maturing In September 2028 [Member] | ||
Disclosure of detailed information about bonds [Line Items] | ||
Term | Five-year (Green bond) | |
Issuance date | In mid-September 2023 | |
Issued amount | $ 10,000,000 | |
Coupon rate | 1.62% | |
Repayment | Interest will be paid annually and the principal will be repayable in September 2028 upon maturity. |
Contents of Significant Acco_29
Contents of Significant Accounts - Bonds Payable - Additional Information (Detail) | 12 Months Ended | |||||||
Jul. 07, 2026 | Jul. 07, 2024 | Jul. 07, 2021 USD ($) TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2023 TWD ($) $ / shares | Dec. 31, 2022 TWD ($) | Jul. 07, 2021 $ / shares | |
Disclosure of detailed information about bonds [Line Items] | ||||||||
Bonds issued amount | $ 38,359,352,000 | $ 28,184,687,000 | ||||||
Bonds repurchased and cancelled value | $ 0 | $ 187,100,000 | ||||||
Currency linked zero coupon exchangeable bonds maturing on July 7, 2026 [member] | ||||||||
Disclosure of detailed information about bonds [Line Items] | ||||||||
Bonds issued amount | $ 400,000,000 | |||||||
Per annum interest rate related to early redemption of bonds | (0.625%) | |||||||
Early Redemption Price, fixed exchange rate | 27.902 | |||||||
Percentage of principal amount, bond will be redeemable for early redemption | 98.14% | |||||||
Percentage of principal amount to redeem bonds on maturity date | 96.92% | |||||||
Effective rate of the host bonds | 3.49% | |||||||
Currency linked zero coupon exchangeable bonds maturing on July 7, 2026 [member] | Bottom of range [member] | ||||||||
Disclosure of detailed information about bonds [Line Items] | ||||||||
Percentage of closing stock price to quotient of early redemption amount multiplied by then exchange price divided by principal amount of bonds | 130% | |||||||
Percentage of the bonds that have been previously redeemed, repurchased and cancelled or exchanged, where issuer may redeem the outstanding bonds | 90% | |||||||
Currency linked zero coupon exchangeable bonds maturing on July 7, 2026 [member] | Common Shares of Novatek [Member] | ||||||||
Disclosure of detailed information about bonds [Line Items] | ||||||||
Exchange price per share | $ / shares | $ 533.8 | $ 731.25 |
Contents of Significant Acco_30
Contents of Significant Accounts - Details of Long-term Loans (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | |
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 22,883,344 | $ 19,279,342 | |
Less: Current portion | (2,227,096) | (2,485,053) | |
Total | 20,656,248 | $ 674,600 | 16,794,289 |
Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 22,883,344 | $ 19,279,342 | |
Bottom of range [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Interest rates applied | 1.67% | 1.67% | 1.48% |
Top of range [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Interest rates applied | 6.56% | 6.56% | 5.62% |
Secured Long-Term Loan from Mega International Commercial Bank (1) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable quarterly from October 24, 2019 to October 24, 2024 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Mega International Commercial Bank (1) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 4,866 | $ 9,732 | |
Secured Long-Term Loan from Mega International Commercial Bank (2) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable quarterly from February 23, 2022 to February 22, 2027 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Mega International Commercial Bank (2) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 13,765 | 18,000 | |
Secured Long-Term Loan from Taiwan Cooperative Bank (1) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable quarterly from October 19, 2015 to October 19, 2025 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Taiwan Cooperative Bank (1) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 23,784 | 35,676 | |
Secured Long-Term Loan from Taiwan Cooperative Bank (2) [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 (2) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 0 | 4,375 | |
Secured Long-Term Loan from Taiwan Cooperative Bank (3) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable monthly from August 13, 2020 to August 13, 2025 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 | $ 20,000 | 32,000 | |
Secured Long-Term Loan from Taiwan Cooperative Bank (4) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable monthly from October 29, 2020 to August 29, 2025 with monthly interest payments. | ||
Secured Long-Term Loan from Taiwan Cooperative Bank (4) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 10,345 | 16,552 | |
Secured Long-Term Loan from Taiwan Cooperative Bank (5) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable monthly from April 15, 2021 to April 15, 2026 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Taiwan Cooperative Bank (5) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 58,916 | 84,166 | |
Secured Syndicated Loans from China Development Bank and 6 others (1) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable semi-annually from October 20, 2016 to October 19, 2024 with semi-annually interest payments. Interest-only payment for the first and the second year. | ||
Secured Syndicated Loans from China Development Bank and 6 others (1) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 0 | 1,915,577 | |
Secured Syndicated Loans from China Development Bank and 6 others (2) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable semi-annually from March 19, 2021 to March 18, 2031 with semi-annually interest payments. Interest-only payment for the first and the second year. | ||
Secured Syndicated Loans from China Development Bank and 6 others (2) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 11,766,832 | 12,415,200 | |
Secured Long-Term Loan from First Commercial Bank [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable monthly from December 2, 2021 to December 2, 2026 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from First Commercial Bank [Member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 35,668 | 47,000 | |
Secured Long-Term Loan from KGI Bank [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Settlement due on December 25, 2026 with monthly interest payments. | ||
Secured Long-Term Loan from KGI Bank [Member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 21,000 | 21,000 | |
Secured Long-Term Loan from Shanghai Commercial Bank(1) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable monthly from January 19, 2022 to December 15, 2026 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Shanghai Commercial Bank(1) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 16,650 | 22,200 | |
Unsecured Long-Term Loan from Bank of China [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable semi-annually from June 24, 2023 to June 24, 2026 with quarterly interest payments. | ||
Unsecured Long-Term Loan from Bank of China [Member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 1,515,790 | 1,797,364 | |
Unsecured Long-Term Loan from Bank of Taiwan [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable quarterly from March 24, 2023 to December 24, 2025 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 | $ 1,333,333 | 2,000,000 | |
Unsecured Revolving Loan from First Commercial Bank (1) (Note A) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Settlement due on February 25, 2026 with monthly interest payments. | ||
Unsecured Revolving Loan from First Commercial Bank (1) (Note A) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 0 | 300,000 | |
Unsecured Revolving Loan from First Commercial Bank (2) (Note A) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Settlement due on March 15, 2026 with monthly interestpayments. | ||
Unsecured Revolving Loan from First Commercial Bank (2) (Note A) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 0 | 300,000 | |
Unsecured Revolving Loan from First Commercial Bank (3) (Note A) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Settlement due on June 15, 2026 with monthly interestpayments. | ||
Unsecured Revolving Loan from First Commercial Bank (3) (Note A) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 0 | 200,000 | |
Unsecured Revolving Loan from First Commercial Bank (4) (Note B) [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 800,000 | 0 | |
Redemption | Settlement due on July 13, 2028 with monthly interest payments. | ||
Secured Long-Term Loan from CTBC Bank [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 131,750 | 0 | |
Redemption | Repayable semi-annually from September 25, 2023 to September 25, 2028 with monthly interest payments. Interest-only payment for the first and the second year. | ||
Secured Long-Term Loan from Taiwan Cooperative Bank (6) [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 34,400 | 0 | |
Redemption | Repayable quarterly from December 28, 2023 to December 28, 2028 with monthly interest payments. Interest-only payment for the first year. | ||
Unsecured Revolving Loan from CTBC Bank (Note D) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Settlement due on July 20, 2025 with monthly interest payments. | ||
Unsecured Revolving Loan from CTBC Bank (Note D) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 4,000,000 | 0 | |
Secured Long-Term Loan from Shanghai Commercial Bank (3) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | 0 | ||
Redemption | Repayable quarterly from June 6, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Shanghai Commercial Bank (3) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 45,000 | ||
Secured Long-Term Loan from Shanghai Commercial Bank (2) [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | 0 | ||
Redemption | Repayable quarterly from March 23, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Shanghai Commercial Bank (2) [member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 4,980 | ||
Secured Long-Term Loan from Mega International Commercial Bank (3) [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable quarterly from December 22, 2022 to February 23, 2027 with monthly interest payments. Interest-only payment for the first year. | ||
Secured Long-Term Loan from Mega International Commercial Bank (3) [Member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 46,265 | 60,500 | |
Unsecured Revolving Loan from Yuanta Commercial Bank (Note C) [Member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Redemption | Repayable annually from March 2, 2023 to March 2, 2026 with monthly interest payments. | ||
Unsecured Revolving Loan from Yuanta Commercial Bank (Note C) [Member] | Cost [member] | |||
Disclosure of detailed information about borrowings [line items] | |||
Long-term loans | $ 3,000,000 | $ 0 |
Contents of Significant Acco_31
Contents of Significant Accounts - Long-Term Loans - Additional Information (Detail) - TWD ($) $ in Millions | Apr. 25, 2023 | Apr. 14, 2022 | Dec. 24, 2021 | Mar. 03, 2021 | Dec. 31, 2023 | Dec. 31, 2022 |
Secured syndicated loans from China development bank [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | $ 9,946 | $ 7,878 | ||||
Secured syndicated loans from China development bank [member] | HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 1,686 | 2,407 | ||||
Secured syndicated loans from China development bank [member] | Top of range [member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Endorsement | 10,351 | 17,876 | ||||
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 | 2,934 | 7,547 | ||||
Yuanta Commercial Bank [Member] | Unsecured Revolving Loan [Member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Debt maturity period | 5-year | |||||
Debt maximum borrowing capacity | $ 4,000 | |||||
Unused line of credit | 0 | 4,000 | ||||
CTBC Bank [Member] | Unsecured Revolving Loan [Member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Debt maturity period | 5-year | |||||
Debt maximum borrowing capacity | $ 4,000 | |||||
Unused line of credit | 0 | 4,000 | ||||
First Commercial Bank [Member] | Unsecured Revolving Loan [Member] | ||||||
Disclosure of detailed information about borrowings [line items] | ||||||
Debt maturity period | 1-year | 1-year | ||||
Debt maximum borrowing capacity | $ 2,000 | $ 2,000 | ||||
Unused line of credit | $ 1,200 | $ 1,200 |
Contents of Significant Acco_32
Contents of Significant Accounts - Post-Employment Benefits - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of defined benefit plans and defined contribution plans [Line Items] | |||
Actual returns on plan assets | $ 37 | $ 136 | |
Expected pension fund contribution in 2024 | $ 700 | ||
Weighted-average durations of defined benefit obligation | 6 years | 7 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% | 2% | 2% |
Pension expenses | $ 45 | $ 34 | $ 23 |
Defined contribution plan [member] | |||
Disclosure of defined benefit plans and defined contribution plans [Line Items] | |||
Percentage of employees' monthly salary or wages as monthly contributions to defined contribution plan | 6% | 6% | 6% |
Pension expenses | $ 1,655 | $ 1,880 | $ 1,636 |
Contents of Significant Acco_33
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, 2023 | Dec. 31, 2022 | |
Present value of defined benefit obligation [member] | ||
Disclosure of net defined benefit liability (asset) [line items] | ||
Beginning balance | $ (5,106,623) | $ (5,458,333) |
Service cost | (9,893) | (9,911) |
Interest income (cost) | (63,322) | (33,842) |
Subtotal | (73,215) | (43,753) |
Arising from changes in financial assumptions | 166,401 | 227,790 |
Experience adjustments | 226,634 | (56,959) |
Subtotal | 393,035 | 170,831 |
Benefits paid | 121,305 | 224,632 |
Ending balance | (4,665,498) | (5,106,623) |
Plan assets [member] | ||
Disclosure of net defined benefit liability (asset) [line items] | ||
Beginning balance | 2,237,221 | 1,581,012 |
Interest income (cost) | 27,742 | 9,802 |
Contribution by employer | 307,556 | 745,066 |
Benefits paid | (121,305) | (224,632) |
Return on plan assets, excluding amounts included in interest income | 9,199 | 125,973 |
Ending balance | $ 2,460,413 | $ 2,237,221 |
Contents of Significant Acco_34
Contents of Significant Accounts - Defined Benefit Plan Recognized on the Consolidated Balance Sheets (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure Of Defined Benefit Plans [Abstract] | |||
Present value of the defined benefit obligation | $ (4,665,498) | $ (5,106,623) | |
Fair value of plan assets | 2,460,413 | 2,237,221 | |
Funded status | (2,205,085) | (2,869,402) | |
Net defined benefit liabilities, noncurrent recognized on the consolidated balance sheets | $ (2,205,085) | $ (72,014) | $ (2,869,402) |
Contents of Significant Acco_35
Contents of Significant Accounts - Major Categories of Plan Assets as a Percentage of Fair Value of the Total Plan Assets (Detail) | Dec. 31, 2023 | Dec. 31, 2022 |
Disclosure Of Fair Value Of Plan Assets [Abstract] | ||
Cash | 21% | 20% |
Equity instruments | 46% | 47% |
Debt instruments | 23% | 22% |
Others | 10% | 11% |
Contents of Significant Acco_36
Contents of Significant Accounts - Principal Underlying Actuarial Assumptions (Detail) | Dec. 31, 2023 | Dec. 31, 2022 |
Disclosure Of Defined Benefit Plans [Abstract] | ||
Discount rate | 1.20% | 1.24% |
Rate of future salary increase | 3.50% | 4.25% |
Contents of Significant Acco_37
Contents of Significant Accounts - Expected Future Benefit Payments (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2023 TWD ($) | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | $ 5,025,532 |
Not later than one year [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 596,934 |
Later than one year and not later than two years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 529,837 |
Later than two years and not later than three years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 486,833 |
Later than three years and not later than four years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 465,919 |
Later than four years and not later than five years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | 434,293 |
Later than five years [member] | |
Disclosure of defined benefit plans [line items] | |
Expected future benefit payments | $ 2,511,716 |
Contents of Significant Acco_38
Contents of Significant Accounts - Sensitivity Analysis (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Discount rate [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
Decrease (increase) in defined benefit obligation due to 0.5% increase in actuarial assumptions | $ 137,615 | $ 172,801 |
Decrease (increase) in defined benefit obligation due to 0.5% decrease in actuarial assumptions | $ (144,683) | $ (182,478) |
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Rate of future salary increase [member] | ||
Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
Decrease (increase) in defined benefit obligation due to 0.5% increase in actuarial assumptions | $ (117,784) | $ (151,050) |
Decrease (increase) in defined benefit obligation due to 0.5% decrease in actuarial assumptions | $ 113,478 | $ 145,000 |
Percentage increase in actuarial assumptions | 0.50% | 0.50% |
Percentage decrease in actuarial assumptions | 0.50% | 0.50% |
Contents of Significant Acco_39
Contents of Significant Accounts - Deferred Government Grants (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Miscellaneous Liabilities [Abstract] | ||
Beginning balance | $ 4,677,444 | $ 8,543,798 |
Arising during the period | 591,086 | 174,352 |
Other operating income | (2,663,843) | (4,164,189) |
Exchange effect | (57,665) | 123,483 |
Ending balance | 2,547,022 | 4,677,444 |
Current (classified under other current liabilities) | 717,457 | 2,681,842 |
Non-current (classified under other noncurrent liabilities) | 1,829,565 | 1,995,602 |
Total | $ 2,547,022 | $ 4,677,444 |
Contents of Significant Acco_40
Contents of Significant Accounts - Refund Liabilities - Summary of Refund Liabilities (classified under other current liabilities) (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Disclosure Of Refund Liability [Abstract] | ||
Refund liabilities | $ 3,033,576 | $ 1,139,227 |
Contents of Significant Acco_41
Contents of Significant Accounts - Summary of Provisions (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Contents Of Significant Accounts [Abstract] | ||
Onerous Contracts (classified under other current liabilities) | $ 57,800 | $ 469,779 |
Decommissioning Liabilities (classified under other noncurrent liabilities) | 602,433 | 366,863 |
Total | $ 660,233 | $ 836,642 |
Contents of Significant Acco_42
Contents of Significant Accounts - Summary of Information about Provisions of Liabilities (Detail) $ in Thousands | 12 Months Ended |
Dec. 31, 2023 TWD ($) | |
Onerous Contracts [member] | |
Disclosure of other provisions [line items] | |
Balance as of January 1, 2023 | $ 469,779 |
Arising during the period | 40,154 |
Unused provision reversed | (450,968) |
Discount rate adjustment and unwinding of discount from the passage of time | 0 |
Exchange effect | (1,165) |
Balance as of December 31, 2023 | 57,800 |
Decommissioning Liabilities [member] | |
Disclosure of other provisions [line items] | |
Balance as of January 1, 2023 | 366,863 |
Arising during the period | 191,360 |
Unused provision reversed | 0 |
Discount rate adjustment and unwinding of discount from the passage of time | 47,880 |
Exchange effect | (3,670) |
Balance as of December 31, 2023 | $ 602,433 |
Contents of Significant Acco_43
Contents of Significant Accounts - Equity - Additional Information (Detail) | 12 Months Ended | |||
Dec. 05, 2023 shares $ / shares | Dec. 05, 2022 shares $ / shares | Dec. 31, 2023 shares $ / shares | Dec. 31, 2022 shares $ / shares | |
Disclosure of classes of share capital [line items] | ||||
Shares authorized | 26,000,000,000 | 26,000,000,000 | ||
Shares issued | 12,529,822,000 | 12,504,749,000 | ||
Shares par value | $ / shares | $ 10 | $ 10 | ||
Number of common shares represented by 1 ADS | 5 | |||
Percentage of legal reserve | 10% | |||
Cash dividends | $ / shares | $ 3.60046348 | |||
American depositary shares [member] | ||||
Disclosure of classes of share capital [line items] | ||||
Number of American Depositary Shares traded on NYSE | 121,000,000 | 135,000,000 | ||
Number of common shares represented by issued American Depositary Shares | 607,000,000 | 674,000,000 | ||
Bottom of range [member] | ||||
Disclosure of classes of share capital [line items] | ||||
Percentage of cash dividend on dividend distribution | 20% | |||
Percentage of stock dividend on dividend distribution | 0% | |||
Top of range [member] | ||||
Disclosure of classes of share capital [line items] | ||||
Percentage of cash dividend on dividend distribution | 100% | |||
Percentage of stock dividend on dividend distribution | 80% | |||
Restricted Stocks [member] | ||||
Disclosure of classes of share capital [line items] | ||||
Shares par value | $ / shares | $ 10 | $ 10 | ||
Number of other equity instruments granted in share-based payment arrangement | 27,000,000 | 23,000,000 | ||
Number of other equity instruments recalled and cancelled in share-based payment arrangement | 2,000,000 | 2,000,000 |
Contents of Significant Acco_44
Contents of Significant Accounts - Summary of Stock Held by Associates (Detail) - shares shares in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure Of Stock Held By Associates [Line Items] | |||
Number of shares in entity held by its subsidiaries or associates | 900,961 | 634,334 | |
HSUN CHIEH [member] | |||
Disclosure Of Stock Held By Associates [Line Items] | |||
Number of shares in entity held by its subsidiaries or associates | 441,371 | 441,371 | |
YANN YUAN [member] | |||
Disclosure Of Stock Held By Associates [Line Items] | |||
Number of shares in entity held by its subsidiaries or associates | 192,963 | 192,963 | |
SUBTRON, the subsidiary of UNIMICRON [member] | |||
Disclosure Of Stock Held By Associates [Line Items] | |||
Number of shares in entity held by its subsidiaries or associates | [1] | 47 | 0 |
SIS [member] | |||
Disclosure Of Stock Held By Associates [Line Items] | |||
Number of shares in entity held by its subsidiaries or associates | [2] | 266,580 | 0 |
[1]Beginning from January 2023, SUBTRON becomes an associate of the Company.[2]Beginning from August 2023, SIS becomes an associate of the Company. |
Contents of Significant Acco_45
Contents of Significant Accounts - Details of Distribution (Detail) - TWD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of equity [Line Items] | |||
Appropriation of earnings, Cash dividends | $ 45,017,096 | $ 19,875,842 | |
Cash dividends | $ 3 | $ 3.6 | |
Legal Reserve [Member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings | $ 6,255,736 | $ 8,905,139 | |
Special Reserve [member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings | (2,734,057) | (2,180,156) | |
Cash dividends [member] | |||
Disclosure of equity [Line Items] | |||
Appropriation of earnings, Cash dividends | $ 37,587,102 | $ 45,017,096 |
Contents of Significant Acco_46
Contents of Significant Accounts - Non-controlling Interests (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Equity [abstract] | ||||
Beginning balance | $ 343,679 | $ 223,181 | $ 113,356 | |
Impact of retroactive applications | 0 | (66,089) | 0 | |
Adjusted beginning balance | 343,679 | 157,092 | 113,356 | |
Net income (loss) | 450,184 | $ 14,702 | 819,960 | (668,245) |
Other comprehensive income (loss) | (14) | 8 | (19) | |
Share-based payment transactions | 5,817 | 1,490 | 0 | |
Changes in subsidiaries' ownership | 456 | (1,339) | (11,126) | |
Non-Controlling Interests | 4,187 | 5,456 | 23,430 | |
Derecognition of the non-controlling interests | (463,450) | (638,988) | 765,785 | |
Ending balance | $ 340,859 | $ 11,132 | $ 343,679 | $ 223,181 |
Contents of Significant Acco_47
Contents of Significant Accounts - Share-Based Payment - Additional Information (Detail) $ / shares in Units, shares in Millions, Right in Millions, $ in Millions | 1 Months Ended | 12 Months Ended | ||||||||||||
Dec. 05, 2023 $ / shares shares | Dec. 05, 2022 $ / shares shares | May 27, 2022 shares | Jun. 30, 2021 | Jun. 09, 2021 $ / shares shares | Sep. 30, 2020 | Sep. 01, 2020 $ / shares shares | Jun. 10, 2020 shares | Jun. 30, 2021 Right | Sep. 30, 2020 Right | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 | |
Restricted Stock Plan For Employees [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||||||||||||
Compensation expenses | $ | $ 1,025 | $ 1,352 | $ 1,520 | |||||||||||
Compensation plan description | UMC is authorized to issue restricted stocks in one tranche or in installments, under the custody of trust institution, within two years from the date of receiving the effective declaration from the competent authority. | UMC is authorized to issue restricted stocks in one tranche or in installments, under the custody of trust institution, within one year from the date of receiving the effective declaration from the competent authority. | ||||||||||||
Eligibility terms to vested restricted stocks | Beginning from the end of two years since the date of grant, those employees who fulfill both service period and performance conditions set by UMC are gradually eligible to the vested restricted stocks at certain percentage and time frame. | |||||||||||||
Maximum shares to be issued under compensation plan | shares | shares | 50 | 233 | ||||||||||||
Shares of restricted stock for employees issued | shares | shares | 27 | 23 | 1 | 200 | ||||||||||
Life of plan | 4 years | 4 years | 4 years | 4 years | ||||||||||
Grant date quoted market price per share | $ / shares | $ / shares | $ 48.9 | $ 44.4 | $ 53 | $ 21.8 | ||||||||||
Stock Appreciation Right Plan For Employees [Member] | ||||||||||||||
Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||||||||||||
Compensation expenses | $ | $ 105 | 210 | $ 271 | |||||||||||
Stock Appreciation Right Plan For Employees Description | One unit of stock appreciation right to employees represents a right to the intrinsic value of one common share of UMC. | |||||||||||||
Life of plan | 4 years | 4 years | ||||||||||||
Liabilities for stock appreciation right recognized | $ 207 | $ 340 | ||||||||||||
Unit of cash-settled stock appreciation right | Right | 1 | 26 |
Contents of Significant Acco_48
Contents of Significant Accounts - Summary of Assumptions Used for Compensation Cost for Cash-settled Share-based Payment Measured at Fair Value on Grant Date by using Black-Scholes Option Pricing Model (Detail) - Stock Appreciation Right Plan For Employees [Member] | 12 Months Ended |
Dec. 31, 2023 yr $ / shares | |
Granted in September 2020 [Member] | |
Statement [Line Items] | |
Share price of measurement date (NT$/ per share) | $ / shares | $ 52.6 |
Expected volatility | 23.95% |
Expected life | 0.67 |
Expected dividend yield | 6.02% |
Risk-free interest rate | 1.06% |
Granted in June 2021 [Member] | |
Statement [Line Items] | |
Share price of measurement date (NT$/ per share) | $ / shares | $ 52.6 |
Expected dividend yield | 6.02% |
Bottom of range [member] | Granted in June 2021 [Member] | |
Statement [Line Items] | |
Expected volatility | 23.21% |
Expected life | 0.44 |
Risk-free interest rate | 1.06% |
Top of range [member] | Granted in June 2021 [Member] | |
Statement [Line Items] | |
Expected volatility | 28.72% |
Expected life | 1.44 |
Risk-free interest rate | 1.08% |
Contents of Significant Acco_49
Contents of Significant Accounts - Summary of Disaggregation of Revenue by Geography (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | $ 222,533,000 | $ 278,705,264 | $ 213,011,018 |
Taiwan [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 68,360,231 | 105,213,451 | 92,427,670 |
China (includes Hong Kong) [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 27,545,452 | 39,641,613 | 26,949,205 |
Japan [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 11,612,866 | 17,053,279 | 13,445,127 |
Korea [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 30,872,198 | 25,689,385 | 17,548,763 |
USA [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 59,103,051 | 67,352,671 | 46,914,605 |
Europe [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | 24,932,099 | 23,711,284 | 15,708,303 |
Others [member] | |||
Disclosure of Geographical Areas [Line Items] | |||
Revenue from contracts with customers | $ 107,103 | $ 43,581 | $ 17,345 |
Contents of Significant Acco_50
Contents of Significant Accounts - Summary of Disaggregation of Revenue by Product (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure Of Products [Line Items] | |||
Revenue from contracts with customers | $ 222,533,000 | $ 278,705,264 | $ 213,011,018 |
Wafer [member] | |||
Disclosure Of Products [Line Items] | |||
Revenue from contracts with customers | 211,750,622 | 265,600,173 | 204,594,399 |
Other products [member] | |||
Disclosure Of Products [Line Items] | |||
Revenue from contracts with customers | $ 10,782,378 | $ 13,105,091 | $ 8,416,619 |
Contents of Significant Acco_51
Contents of Significant Accounts - Summary of Disaggregation of Revenue by The Timing of Revenue Recognition (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
Revenue from contracts with customers | $ 222,533,000 | $ 278,705,264 | $ 213,011,018 |
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 | 220,283,306 | 276,175,120 | 211,074,982 |
Goods or services transferred over time [member] | |||
Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
Revenue from contracts with customers | $ 2,249,694 | $ 2,530,144 | $ 1,936,036 |
Contents of Significant Acco_52
Contents of Significant Accounts - Summary of Balances of Contract Assets and Contract Liabilities (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Jan. 01, 2022 TWD ($) |
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | $ 739,528 | $ 373,318 | $ 319,621 | |
Contract liabilities, current | 3,250,712 | $ 106,163 | 3,546,815 | 3,441,754 |
Contract liabilities, non-current | 430,640 | $ 14,064 | 438,188 | 641,386 |
Contract liabilities | 3,681,352 | 3,985,003 | 4,083,140 | |
Sales of Goods and Services [member] | ||||
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | 1,132,477 | 766,691 | 677,326 | |
Contract liabilities | 3,681,352 | 3,985,003 | 4,083,140 | |
Loss allowance [member] | ||||
Disclosure of balances of contract assets and contract liabilities [line items] | ||||
Contract assets, current | $ (392,949) | $ (393,373) | $ (357,705) |
Contents of Significant Acco_53
Contents of Significant Accounts - Operating Revenues - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure of additional information about revenue [Abstract] | ||
Revenue that was included in contract liability balance at beginning of period | $ 2,871 | $ 3,112 |
Transaction price allocated to unsatisfied performance obligations | 195 | 223 |
Asset recognized from the cost to fulfill a contract with customer | $ 877 | $ 721 |
Contents of Significant Acco_54
Contents of Significant Accounts - Operating Costs and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | $ 38,696,110 | $ 44,003,174 | $ 35,195,095 | |
Labor and health insurance | 2,060,096 | 1,840,591 | 1,641,494 | |
Pension | 1,700,656 | 1,913,828 | 1,658,923 | |
Other employee benefit expenses | 618,610 | 538,853 | 480,497 | |
Depreciation | 37,551,088 | 41,061,930 | 43,911,464 | |
Amortization | 2,726,481 | $ 89,043 | 2,841,334 | 2,894,942 |
Operating costs [member] | ||||
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | 26,693,905 | 30,074,528 | 23,388,888 | |
Labor and health insurance | 1,502,553 | 1,368,803 | 1,183,315 | |
Pension | 1,240,577 | 1,489,076 | 1,259,044 | |
Other employee benefit expenses | 421,871 | 373,739 | 335,829 | |
Depreciation | 36,006,021 | 39,305,321 | 42,002,745 | |
Amortization | 1,277,920 | 1,470,912 | 834,384 | |
Operating expenses [member] | ||||
Disclosure Of Operating Costs And Expenses [Line Items] | ||||
Salaries | 12,002,205 | 13,928,646 | 11,806,207 | |
Labor and health insurance | 557,543 | 471,788 | 458,179 | |
Pension | 460,079 | 424,752 | 399,879 | |
Other employee benefit expenses | 196,739 | 165,114 | 144,668 | |
Depreciation | 1,545,067 | 1,756,609 | 1,908,719 | |
Amortization | $ 1,448,561 | $ 1,370,422 | $ 2,060,558 |
Contents of Significant Acco_55
Contents of Significant Accounts - Operating Costs and Expenses - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2023 | |
Bottom of range [member] | |
Disclosure Of Operating Costs And Expenses [Line Items] | |
Allocated profit percentage for employees' compensation | 5% |
Top of range [member] | |
Disclosure Of Operating Costs And Expenses [Line Items] | |
Allocated profit percentage for directors' compensation | 0.20% |
Contents of Significant Acco_56
Contents of Significant Accounts - Details of Distribution of Employees' Compensation and Directors' Compensation (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Analysis of income and expense [abstract] | |||
Employees' compensation – Cash | $ 5,439,059 | $ 9,160,485 | $ 4,770,909 |
Directors' compensation | $ 45,000 | $ 45,000 | $ 25,264 |
Contents of Significant Acco_57
Contents of Significant Accounts - Net Other Operating Income and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Analysis of income and expense [abstract] | ||||
Government grants | $ 3,862,001 | $ 5,058,658 | $ 5,269,412 | |
Rental income from property, plant and equipment | 202,082 | 192,833 | 187,166 | |
Gain on disposal of property, plant and equipment | 268,293 | $ 8,762 | 482,983 | 143,735 |
Others | (330,050) | (394,827) | (373,482) | |
Total | $ 4,002,326 | $ 130,709 | $ 5,339,647 | $ 5,226,831 |
Contents of Significant Acco_58
Contents of Significant Accounts - Non-Operating Income and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
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 | $ (40,553) | $ (1,247,962) | $ 2,892,470 | |
Gain (Loss) on disposal of investments accounted for under the equity method | 163,395 | 50,553 | (16,388) | |
Others | 100,254 | 62,869 | (2,009,952) | |
Total other gains and losses | 223,096 | $ 7,286 | (1,134,540) | 866,130 |
Interest expenses, bonds payable | 444,424 | 486,079 | 437,055 | |
Interest expenses, bank loans | 833,548 | 1,100,840 | 1,285,708 | |
Interest expenses, lease liabilities | 179,367 | 166,928 | 145,187 | |
Interest expenses, others | 16,390 | 31,464 | 139 | |
Financial expenses | 96,645 | 81,018 | 94,841 | |
Total finance costs | $ 1,570,374 | $ 51,286 | $ 1,866,329 | $ 1,962,930 |
Contents of Significant Acco_59
Contents of Significant Accounts - Components of Other Comprehensive Income (Loss) (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Statement of changes in equity [abstract] | ||||
Remeasurements of defined benefit pension plans, Arising during the period | $ 402,234 | $ 13,136 | $ 296,804 | $ (197,477) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Arising during the period | 5,530,359 | 180,612 | (4,646,064) | 5,811,342 |
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 | 1,610,116 | 52,584 | (1,694,965) | 2,959,130 |
Exchange differences on translation of foreign operations, Arising during the period | (2,386,278) | 9,292,308 | (4,743,299) | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Arising during the period | (73,005) | 91,442 | (24,018) | |
Total other comprehensive income (loss), Arising during the period | 5,083,426 | 3,339,525 | 3,805,678 | |
Exchange differences on translation of foreign operations, Reclassification adjustments during the period | 0 | 0 | 2,283 | |
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 | (1,413) | 0 | (394) | |
Total other comprehensive income (loss), Reclassification adjustments during the period | (1,413) | 0 | 1,889 | |
Remeasurements of defined benefit pension plans, Before tax | 402,234 | 13,136 | 296,804 | (197,477) |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Before tax | 5,530,359 | (4,646,064) | 5,811,342 | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Before tax | 1,610,116 | 52,584 | (1,694,965) | 2,959,130 |
Exchange differences on translation of foreign operations, Before tax | (2,386,278) | (77,932) | 9,292,308 | (4,741,016) |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Before tax | (74,418) | (2,430) | 91,442 | (24,412) |
Total other comprehensive income (loss), Before tax | 5,082,013 | 3,339,525 | 3,807,567 | |
Remeasurements of defined benefit pension plans, Income tax effect | (80,447) | (59,361) | 39,495 | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Income tax effect | (243,057) | (71,121) | (360,061) | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Income tax effect | (90,891) | 123,483 | (96,510) | |
Exchange differences on translation of foreign operations, Income tax effect | 386,660 | 883,238 | 23,175 | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Income tax effect | 3,768 | (23,672) | 6,763 | |
Total other comprehensive income (loss), Income tax effect | (23,967) | 852,567 | (387,138) | |
Remeasurements of defined benefit pension plans, Net of tax | 321,787 | 237,443 | (157,982) | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income, Net of tax | 5,287,302 | (4,717,185) | 5,451,281 | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss, Net of tax | 1,519,225 | (1,571,482) | 2,862,620 | |
Exchange differences on translation of foreign operations, Net of tax | (1,999,618) | 10,175,546 | (4,717,841) | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss, Net of tax | (70,650) | 67,770 | (17,649) | |
Total other comprehensive income (loss) | $ 5,058,046 | $ 165,188 | $ 4,192,092 | $ 3,420,429 |
Contents of Significant Acco_60
Contents of Significant Accounts - Major Components of Income Tax Expense (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Current income tax expense (benefit): | ||||
Current income tax charge | $ 6,426,598 | $ 17,582,039 | $ 7,088,975 | |
Adjustments in respect of current income tax of prior periods | (217,891) | (585,941) | (150,260) | |
Deferred income tax expense (benefit): | ||||
Deferred income tax related to origination and reversal of temporary differences | 2,239,309 | 2,276,015 | 407,280 | |
Deferred income tax related to recognition and derecognition of tax losses and unused tax credits | 0 | 60,178 | 723,270 | |
Adjustment of prior year's deferred income tax | (120,230) | 8,611 | (130,841) | |
Deferred income tax arising from write-down or reversal of write-down of deferred tax assets | (16,516) | (14,007) | (20,172) | |
Income tax expense recorded in profit or loss | 8,311,270 | $ 271,433 | 19,326,895 | 7,918,252 |
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 | (80,447) | (59,361) | 39,495 | |
Unrealized gains or losses from equity instruments investments measured at fair value through other comprehensive income | (243,057) | (71,121) | (360,061) | |
Share of other comprehensive income (loss) of associates and joint ventures which will not be reclassified subsequently to profit or loss | (90,891) | 123,483 | (96,510) | |
Income tax related to items that will not be reclassified subsequently to profit or loss | (414,395) | (13,533) | (6,999) | (417,076) |
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 | 386,660 | 883,238 | 23,175 | |
Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss | 3,768 | (23,672) | 6,763 | |
Income tax related to items that may be reclassified subsequently to profit or loss | 390,428 | $ 12,751 | 859,566 | 29,938 |
Income tax charged directly to equity | ||||
Disposal of parent company's stock by subsidiary recognized as treasury stock transactions | 0 | (203) | ||
Adjustments of changes in net assets of associates and joint ventures accounted for using equity method | (1,117) | (2,720) | 22 | |
Income tax charged directly to equity | $ (1,117) | $ (2,720) | $ (181) |
Contents of Significant Acco_61
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, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] | ||||
Income before tax | $ 68,450,404 | $ 2,235,480 | $ 109,625,660 | $ 58,496,432 |
At UMC's statutory income tax rate | 13,690,081 | 21,925,132 | 11,699,286 | |
Adjustments in respect of current income tax of prior periods | (217,891) | (585,941) | (150,260) | |
Net changes in loss carry-forward and investment tax credits | (2,179,234) | (465,152) | (845,267) | |
Adjustment of deferred tax assets/liabilities for write-downs/reversals and different jurisdictional tax rates | 211,639 | (281,319) | 183,123 | |
Tax effect of non-taxable income and non-deductible expenses: | ||||
Tax exempt income | (1,428,035) | (4,384,566) | (3,258,695) | |
Investment loss (gain) | (755,800) | 1,827,822 | (1,388,877) | |
Dividend income | (323,182) | (423,027) | (171,725) | |
Others | (145,520) | (340,745) | 6,463 | |
Basic tax | 43,506 | 0 | 0 | |
Estimated income tax on unappropriated earnings | (1,160,324) | 1,247,910 | 1,558,031 | |
Effect of different tax rates applicable to UMC and its subsidiaries | 234,510 | 605,929 | 116,174 | |
Taxes withheld in other jurisdictions | 38,346 | 35,979 | 43,443 | |
Others | 303,174 | 164,873 | 126,556 | |
Income tax expense recorded in profit or loss | $ 8,311,270 | $ 271,433 | $ 19,326,895 | $ 7,918,252 |
Contents of Significant Acco_62
Contents of Significant Accounts - Significant Components of Deferred Income Tax Assets and Liabilities (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) |
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | $ 5,130,411 | $ 167,551 | $ 5,226,236 | |
Deferred income tax liabilities | (5,631,964) | $ (183,931) | (3,562,436) | |
Net deferred income tax assets (liabilities) | (501,553) | 1,663,800 | $ 3,154,352 | |
Depreciation [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 2,396,554 | 2,056,568 | ||
Deferred income tax liabilities | (2,085,916) | (70,133) | ||
Pension [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 436,129 | 569,193 | ||
Refund liabilities [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 306,408 | 138,617 | ||
Allowance for inventory valuation losses [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 682,909 | 507,621 | ||
Investment loss [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 314,427 | 474,405 | ||
Unrealized profit on intercompany sales [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 689,124 | 906,793 | ||
Others [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax assets | 304,860 | 573,039 | ||
Deferred income tax liabilities | (374,109) | (544,863) | ||
Investment gain [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | (2,888,534) | (2,648,989) | ||
Amortizable assets [member] | ||||
Disclosure Of Deferred Taxes [Line Items] | ||||
Deferred income tax liabilities | $ (283,405) | $ (298,451) |
Contents of Significant Acco_63
Contents of Significant Accounts - Movement of Deferred Tax (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Changes in deferred tax assets and liabilities [Line Items] | |||
Beginning Balance | $ 1,663,800 | $ 3,154,352 | |
Amounts recognized in profit or loss during the period | (2,102,563) | (2,330,797) | |
Amounts recognized in other comprehensive income (loss) | (23,967) | 852,567 | $ (387,138) |
Amounts recognized in equity | (1,117) | (2,720) | |
Exchange adjustments | (37,706) | (9,602) | |
Ending Balance | $ (501,553) | $ 1,663,800 | $ 3,154,352 |
Contents of Significant Acco_64
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, 2023 | Dec. 31, 2022 |
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 | $ 37,523,694 | $ 37,259,181 |
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 | 15,395,514 | 35,263,925 |
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 | $ 22,128,180 | $ 1,995,256 |
Contents of Significant Acco_65
Contents of Significant Accounts - Income Tax - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Taxable temporary differences of unrecognized deferred tax liabilities associated with investments in subsidiaries | $ 20,389 | $ 21,658 |
Deductible temporary differences for which no deferred income tax assets have been recognized | $ 3,410 | $ 3,001 |
USJC [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Effective tax rate | 27.70% | |
Accounting profit | $ 3,408 | |
UMC KOREA [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Effective tax rate | 3.55% | |
Accounting profit | $ 2 | |
UME BV [Member] | ||
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
Effective tax rate | 20.12% | |
Accounting profit | $ 10 |
Contents of Significant Acco_66
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, 2023 TWD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 TWD ($) $ / shares shares | Dec. 31, 2021 TWD ($) $ / shares shares | |
Earnings per share-basic | ||||
Net income attributable to the parent company | $ 59,688,950 | $ 1,949,345 | $ 89,478,805 | $ 51,246,425 |
Weighted-average number of ordinary shares for basic earnings per share (thousand shares) | 12,137,954 | 12,137,954 | 12,095,312 | 12,005,126 |
Earnings per share-basic (NTD) | (per share) | $ 4.92 | $ 0.16 | $ 7.4 | $ 4.27 |
Earnings per share-diluted | ||||
Net income attributable to the parent company | $ 59,688,950 | $ 1,949,345 | $ 89,478,805 | $ 51,246,425 |
Weighted-average number of ordinary shares for basic earnings per share (thousand shares) | 12,137,954 | 12,137,954 | 12,095,312 | 12,005,126 |
Effect of dilution | ||||
Restricted stocks for employees | 114,974 | 114,974 | 156,098 | 159,478 |
Employees' compensation | 129,196 | 129,196 | 238,242 | 80,243 |
Weighted-average number of ordinary shares after dilution (thousand shares) | 12,382,124 | 12,382,124 | 12,489,652 | 12,244,847 |
Earnings per share-diluted (NTD) | (per share) | $ 4.82 | $ 0.16 | $ 7.16 | $ 4.19 |
Contents of Significant Acco_67
Contents of Significant Accounts - Reconciliation of Liabilities Arising from Financing Activities (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |||||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | ||||
Short-term loans [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | $ 0 | $ 1,924,124 | $ 11,057,132 | |||
Cash Flows | 13,530,000 | (1,965,684) | (8,974,216) | |||
Non-cash changes,Foreign exchange | 0 | 41,560 | (158,792) | |||
Non-cash changes,Others | [1] | 0 | 0 | 0 | ||
Ending Balance | 13,530,000 | 0 | 1,924,124 | |||
Long-term loans (current portion included) [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | 19,279,342 | 36,624,907 | 33,066,106 | |||
Cash Flows | 3,857,704 | (18,816,259) | 4,088,537 | |||
Non-cash changes,Foreign exchange | (253,702) | 1,470,694 | (529,736) | |||
Non-cash changes,Others | [1] | 0 | 0 | |||
Ending Balance | 22,883,344 | 19,279,342 | 36,624,907 | |||
Bonds payable (current portion included) [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | 28,184,687 | 40,536,658 | 18,690,384 | |||
Cash Flows | 9,989,245 | (13,305,050) | 23,703,692 | |||
Non-cash changes,Foreign exchange | 0 | |||||
Non-cash changes,Others | [1],[2] | 185,420 | 953,079 | (1,857,418) | ||
Ending Balance | 38,359,352 | 28,184,687 | 40,536,658 | |||
Guarantee deposits (current portion included) [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | 30,757,001 | [3] | 14,369,769 | [3] | 235,992 | |
Cash Flows | 10,423,345 | 14,984,941 | 14,219,408 | |||
Non-cash changes,Foreign exchange | 419,040 | 1,402,291 | (85,631) | |||
Non-cash changes,Others | [1] | 0 | 0 | |||
Ending Balance | [3] | 41,599,386 | 30,757,001 | 14,369,769 | ||
Lease liabilities [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | 5,737,095 | 5,068,754 | 5,576,864 | |||
Cash Flows | (666,439) | (712,854) | (699,680) | |||
Non-cash changes,Foreign exchange | (24,106) | 153,406 | (144,419) | |||
Non-cash changes,Others | [1] | 346,637 | 1,227,789 | [4] | 335,989 | |
Ending Balance | 5,393,187 | 5,737,095 | 5,068,754 | |||
Other financial liabilities [member] | ||||||
Disclosure of reconciliation of liabilities arising from financing activities [line items] | ||||||
Beginning balance | [5] | 21,449,487 | 20,966,209 | 20,746,624 | ||
Cash Flows | [5] | (21,209,443) | ||||
Non-cash changes,Foreign exchange | [5] | (330,783) | 306,902 | (163,387) | ||
Non-cash changes,Others | [1],[5] | 90,739 | 176,376 | 382,972 | ||
Ending Balance | [5] | $ 0 | $ 21,449,487 | $ 20,966,209 | ||
[1]Other non-cash changes mainly consisted of discount amortization measured by the effective interest method.[2]Please refer to Note 6(13) for the Company’s exchangeable bonds.[3]Guarantee deposits mainly consisted of deposits of capacity reservation.[4]Mainly due to the increase in land lease.[5]Please refer to Note 9(6) for more details on other financial liabilities. |
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, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | |
Disclosure of transactions between related parties [line items] | ||||||
Amount of downstream transaction | $ 350 | $ 350 | $ 350 | |||
UMC GROUP (USA) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 61,923,652 | $ 68,554,072 | $ 48,440,369 | |||
Accounts receivable | $ 5,827,800 | $ 9,502,922 | $ 6,286,428 | |||
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 | Net 60 days |
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 1,127,275 | $ 1,143,280 | $ 1,222,320 | |||
Accounts receivable | $ 11,688 | $ 16,774 | $ 29,012 | |||
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 | Net 30 days |
UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 364,948 | $ 656,472 | $ 178,331 | |||
Accounts receivable | $ 10,800 | $ 6,734 | $ 18,818 | |||
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 | Net 30 days |
WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) (WTK) [member] | UMC GROUP (USA) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 505,806 | $ 716,357 | $ 545,785 | |||
Accounts receivable | $ 53,916 | $ 81,819 | $ 126,580 | |||
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 | Net 60 days |
WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) (WTK) [member] | UMC [Member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 124,178 | $ 110,620 | ||||
Explanation of terms and conditions of outstanding balances for related party transaction | Month-end 30 days | Month-end 30 days | Month-end 30 days | Month-end 30 days | ||
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | UMC GROUP (USA) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 384,067 | $ 551,913 | $ 366,968 | |||
Accounts receivable | $ 43,863 | $ 147,265 | $ 60,147 | |||
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 | Net 60 days |
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HJ) [member] | UDS [Member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 159,523 | $ 311,972 | ||||
Accounts receivable | $ 2,696 | $ 9,500 | ||||
Explanation of terms and conditions of outstanding balances for related party transaction | Month-end 30 days | Month-end 30 days | Month-end 30 days | Month-end 30 days | ||
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | UMC GROUP (USA) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 1,208,630 | $ 1,565,670 | $ 1,444,736 | |||
Accounts receivable | $ 17,816 | $ 310,431 | $ 221,375 | |||
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 | Net 60 days |
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. (UDS) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 286,087 | $ 148,259 | ||||
Accounts receivable | $ 362 | $ 171 | ||||
Explanation of terms and conditions of outstanding balances for related party transaction | Month-end 30 days | Month-end 30 days | Month-end 30 days | Month-end 30 days | ||
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | UMC [Member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 134,303 | $ 1,035,407 | ||||
Accounts receivable | $ 173 | |||||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 30 days - Net 45 days | Net 30 days - Net 45 days | Net 30 days - Net 45 days | Net 30 days - Net 45 days | ||
UNITED SEMICONDUCTOR JAPAN CO., LTD. (USJC) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 164,855 | |||||
Accounts receivable | $ 151,430 | |||||
Explanation of terms and conditions of outstanding balances for related party transaction | Net 60 days | Net 60 days | ||||
UNITED SEMICONDUCTOR JAPAN CO., LTD. (USJC) [member] | UMC GROUP (USA) [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Sales | $ 3,487,292 | $ 4,272,900 | $ 2,917,993 | |||
Accounts receivable | $ 342,835 | $ 744,082 | $ 428,363 | |||
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 | Net 60 days |
Significant Related Party Tra_4
Significant Related Party Transactions - Significant Transactions between Company and Other Related Parties (Detail) ¥ in Thousands, shares in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended | |||||
Dec. 31, 2023 TWD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) shares | Dec. 31, 2023 USD ($) | Dec. 31, 2023 CNY (¥) | |
Disclosure of transactions between related parties [line items] | ||||||
Accounts receivable-related parties, net | $ 347,964 | $ 530,577 | $ 11,364 | |||
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | 16,694,860 | 17,784,651 | 545,227 | |||
Acquisition of investments accounted for under the equity method, Purchase price | 32,785,800 | 26,504,913 | $ 1,070,731 | |||
Acquisition of intangible assets | 2,546,516 | $ 83,165 | 2,756,155 | $ 1,924,924 | ||
Trading Capital Amount | ¥ | ¥ 4,416,624 | |||||
Purchase price | 21,209,443 | |||||
FARADAY TECHNOLOGY CORP. [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Acquisition of investments accounted for under the equity method, Purchase price | 1,990,073 | 1,862,245 | ||||
Acquisition of intangible assets | 323,551 | 266,053 | 181,254 | |||
ARTERY TECHNOLOGY CORPORATION, LTD. [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Accounts receivable-related parties, net | 40,886 | 56,864 | ||||
FARADAY TECHNOLOGY CORP. [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Accounts receivable-related parties, net | 302,828 | 441,963 | ||||
Associates [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Operating revenues | 3,018,171 | 5,744,098 | 2,778,544 | |||
Refund liability, classified under other current liabilities | 636 | 1,545 | ||||
Associates [member] | Stock of Artery Technology Corporation [Member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Acquisition of financial assets at fair value through profit or loss – noncurrent, Purchase price | $ 13,929 | |||||
Acquisition of shares, noncurrent financial assets at fair value through profit or loss, Trading Volume | shares | 82 | |||||
Associates [member] | Stock Of UNIMICRON [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Acquisition of investments accounted for under the equity method, Purchase price | $ 608,224 | |||||
Acquisition of investments accounted for under the equity method, Trading Volume | shares | 4,945 | 4,945 | ||||
Other related party [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Operating revenues | $ 4,463 | 40,474 | $ 38,797 | |||
Accounts receivable-related parties, net | 0 | 1,052 | ||||
Refund liability, classified under other current liabilities | 0 | 7 | ||||
Mask expenditure | 2,375,225 | 2,581,409 | 1,861,438 | |||
Other payables of mask expenditure | 751,763 | 812,185 | 560,042 | |||
All other related parties [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Operating revenues | 3,022,634 | 5,784,572 | $ 2,817,341 | |||
Refund liability, classified under other current liabilities | 636 | 1,552 | ||||
Others [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Accounts receivable-related parties, net | 3,602 | 30,698 | ||||
Other Associates [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Accounts receivable-related parties, net | 648 | $ 0 | ||||
XIAMEN JINYUAN INDUSTRIAL DEVELOPMENT CO., LTD. [member] | Increase of ownership stake in the subsidiary company USCXM [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Trading Capital Amount | ¥ | 3,741,862 | |||||
Purchase price | 17,945,970 | |||||
FUJIAN ELECTRONICS & INFORMATION INDUSTRY ENTREPRENEURSHIP INVESTMENT LIMITED PARTNERSHIP [member] | Increase of ownership stake in the subsidiary company USCXM [member] | ||||||
Disclosure of transactions between related parties [line items] | ||||||
Trading Capital Amount | ¥ | ¥ 674,762 | |||||
Purchase price | $ 3,263,473 |
Significant Related Party Tra_5
Significant Related Party Transactions - Additional Information (Detail) | 12 Months Ended |
Dec. 31, 2023 | |
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 | month-end 30 days |
Overseas [member] | Top of range [member] | |
Disclosure of transactions between related parties [line items] | |
Collection periods for accounts receivables | month-end 60 days |
Significant Related Party Tra_6
Significant Related Party Transactions - Key Management Personnel Compensation (Detail) - TWD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of transactions between related parties [abstract] | |||
Short-term employee benefits | $ 1,462,964 | $ 2,047,118 | $ 562,117 |
Post-employment benefits | 2,732 | 2,782 | 2,322 |
Share-based payment | 500,391 | 719,786 | 1,035,401 |
Others | 618 | 649 | 578 |
Total | $ 1,966,705 | $ 2,770,335 | $ 1,600,418 |
Assets Pledged as Collateral -
Assets Pledged as Collateral - Summary of Assets Pledged as Collateral (Detail) - TWD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 14,027,423 | $ 21,909,250 |
Refundable deposits time deposit [member] | Customs [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 813,289 | 812,248 |
Purpose of pledge | Customs duty guarantee | |
Refundable deposits time deposit [member] | Science Park Bureau [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 236,556 | 236,587 |
Purpose of pledge | Collateral for land lease | |
Refundable deposits time deposit [member] | Science Park Bureau [member] | Dormitory Lease [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 18,647 | 29,371 |
Purpose of pledge | Collateral for dormitory lease | |
Refundable deposits time deposit [member] | National Property Administration, Ministry of Finance [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 64,950 | 64,950 |
Purpose of pledge | Guarantee for the application of national non-public use land for development | |
Refundable deposits time deposit [member] | Bureau of Land Administration, Tainan City Government [Member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 8,118 | 8,118 |
Purpose of pledge | Guarantee for the application of national non-public use land for development | |
Refundable deposits time deposit [member] | Liquefied Natural Gas Business Division, CPC Corporation, Taiwan [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 36,970 | 34,100 |
Purpose of pledge | Energy resources guarantee | |
Refundable deposits time deposit [member] | Bank of China and Agricultural Bank of China [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 1,006,852 | 1,043,840 |
Purpose of pledge | Bank performance guarantee | |
Refundable deposits time deposit [member] | CTBC Bank Singapore Branch [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 459,900 | 459,750 |
Purpose of pledge | Collateral for letter of credit | |
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 | $ 4,487,730 | 4,828,597 |
Purpose of pledge | Collateral for long-term loans | |
Machinery and equipment [member] | Taiwan Cooperative Bank, Mega International Commercial Bank, KGI Bank, First Commercial Bank, Shanghai Commercial Bank, CTBC Bank and Secured Syndicated Loans from China Development Bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 6,627,761 | 14,066,044 |
Purpose of pledge | Collateral for long-term loans | |
Transportation equipment [member] | Secured Syndicated Loans from China Development Bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 0 | 592 |
Purpose of pledge | Collateral for long-term loans | |
Furniture and fixtures [member] | Secured Syndicated Loans from China Development Bank and 6 others [member] | ||
Assets Pledged As Collateral [Line Items] | ||
Assets pledged as collateral | $ 0 | 46,823 |
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 | $ 266,650 | $ 278,230 |
Purpose of pledge | Collateral for long-term loans |
Significant Contingencies and_2
Significant Contingencies and Unrecognized Contract Commitments - Additional Information (Detail) ¥ in Millions, $ in Millions, $ in Millions | Jan. 27, 2022 TWD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 CNY (¥) | Jul. 31, 2023 CNY (¥) | Jul. 31, 2023 USD ($) |
Disclosure of contingent liabilities [line items] | |||||
Amounts available under unused letters of credit | $ 33,200 | ||||
Litigations, electricity supply and customs tax guarantee | 2,200 | ||||
Patent license agreements and development contracts of intellectual property, contract amount | 3,800 | ||||
Royalties and development fees not yet recognized | 1,200 | ||||
Construction contracts, amount | 70,600 | ||||
Construction contracts not yet recognized | $ 38,400 | ||||
Final Decision By The Authority [Member] | Micron Technology [Member] | Intellecutal Property And Commercial Court [Member] | |||||
Disclosure of contingent liabilities [line items] | |||||
Amount of fine | $ 20 | ||||
Probation period | 2 years | ||||
UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. (USCXM) [member] | |||||
Disclosure of contingent liabilities [line items] | |||||
Amount of investment in subsidiaries | ¥ | ¥ 8,300 | ||||
Repurchase from the other investors of their investments | ¥ | ¥ 4,900 | ||||
Investments in subsidiaries by entity | ¥ 4,120 | $ 660 | |||
Additional Investment by entity subsidiary | 740 | $ 120 | |||
Cumulative investment in subsidiary by group | ¥ | ¥ 4,900 |
Significant Subsequent Events -
Significant Subsequent Events - Additional Information (Detail) ¥ in Millions, $ in Millions, $ in Millions | Apr. 02, 2024 CNY (¥) | Mar. 22, 2024 TWD ($) | Apr. 30, 2024 USD ($) | Feb. 27, 2024 USD ($) |
Purchase Of Interests In Associates [member] | FARADAY TECHNOLOGY CORP. [member] | ||||
Disclosure of subsidiaries [line items] | ||||
Purchase of interests in associates | $ 534 | |||
7V AI CAPITAL LLC [member] | Authorization to contribute additional capital to the subsidiary company [member] | Top of range [member] | UMC Capital Corp. [Member] | ||||
Disclosure of subsidiaries [line items] | ||||
The amount the parent company participate in the capital increase of a subsidiary | $ 22 | |||
7V AI CAPITAL LLC [member] | Authorization to contribute capital to the investee company [member] | Top of range [member] | UMC Capital Corp. [Member] | ||||
Disclosure of subsidiaries [line items] | ||||
The amount the Board of Directors of a subsidiary approved an investment in a company | $ 20 | |||
HEJIAN TECHNOLOGY (SUZHOU) CO., LTD [member] | Disposal of major subsidiary [member] | UNITEDDS SEMICONDUCTOR (SHANDONG) CO., LTD. [member] | ||||
Disclosure of subsidiaries [line items] | ||||
Disposal of ownership interest in the subsidiary percentage | 100% | |||
Consideration Receivable On Disposal Of Subsidiary | ¥ | ¥ 77 |
Financial Risk and Fair Value_3
Financial Risk and Fair Value Disclosures - Categories of Financial Instruments (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of detailed information about financial instruments [abstract] | |||
Financial assets at fair value through profit or loss | $ 17,138,461 | $ 18,490,569 | |
Financial assets at fair value through other comprehensive income | 17,683,960 | 15,189,600 | |
Financial assets measured at amortized cost | |||
Cash and cash equivalents (cash on hand excluded) | 132,547,415 | 173,812,754 | |
Receivables | 32,292,914 | 38,783,086 | |
Refundable deposits | 2,708,823 | $ 88,466 | 2,749,691 |
Other financial assets | 6,353,768 | 869,308 | |
Total | 208,725,341 | 249,895,008 | |
Financial liabilities at fair value through profit or loss | 1,019,362 | 438,397 | |
Financial liabilities measured at amortized cost | |||
Short-term loans | 13,530,000 | $ 441,868 | 0 |
Payables | 52,393,399 | 58,893,871 | |
Guarantee deposits (current portion included) | 41,599,386 | 30,757,001 | |
Bonds payable (current portion included) | 38,359,352 | 28,184,687 | |
Long-term loans (current portion included) | 22,883,344 | 19,279,342 | |
Lease liabilities | 5,393,187 | 5,737,095 | |
Other financial liabilities | 0 | 21,449,487 | |
Total | $ 175,178,030 | $ 164,739,880 |
Financial Risk and Fair Value_4
Financial Risk and Fair Value Disclosures - Additional Information (Detail) - TWD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Accounts receivables from the top ten customers | 67% | 56% | |
Profit or loss attributable to change in unrealized gains or losses for financial assets without quoted market prices held at end of period | $ (1,329) | $ (74) | $ 330 |
Profit or loss attributable to change in unrealized gains or losses for financial liabilities without quoted market prices held at end of period | (581) | 829 | (360) |
Interest rate risk [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Increase (decrease) in profit due to percentage increase in market risk | 36 | 19 | 39 |
Increase (decrease) in profit due to percentage decrease in market risk | $ (36) | $ (19) | $ (39) |
Equity price risk [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Percentage increase in market risk | 5% | 5% | 5% |
Increase (decrease) in profit due to percentage increase in market risk | $ 270 | $ 285 | $ 393 |
Percentage decrease in market risk | 5% | 5% | 5% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (270) | $ (285) | $ (393) |
Increase (decrease) in other comprehensive income due to percentage increase in market risk | 722 | 579 | 867 |
Increase (decrease) in other comprehensive income due to percentage decrease in market risk | $ (722) | $ (579) | $ (867) |
Taiwan, New Dollars [member] | Currency risk [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Percentage increase in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage increase in market risk | $ 620 | $ 1,305 | $ 1,104 |
Percentage decrease in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (620) | $ (1,305) | $ (1,104) |
China, Yuan Renminbi [member] | Currency risk [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Percentage increase in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage increase in market risk | $ 582 | $ 572 | $ 375 |
Percentage decrease in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (582) | $ (572) | $ (375) |
Japan, Yen [member] | Currency risk [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Percentage increase in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage increase in market risk | $ 290 | $ 538 | $ 434 |
Percentage decrease in market risk | 10% | 10% | 10% |
Increase (decrease) in profit due to percentage decrease in market risk | $ (290) | $ (538) | $ (434) |
Financial assets at fair value through profit or loss, category [member] | |||
Disclosure of nature and extent of risks arising from financial instruments [line items] | |||
Financial assets transfer from level two to level one | $ 655 |
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, 2023 | Dec. 31, 2022 |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | $ 13,780,612 | |
Payables | 52,202,821 | $ 58,767,584 |
Guarantee deposits | 41,599,386 | 30,757,001 |
Bonds payable | 40,232,586 | 23,809,420 |
Long-term loans | 25,290,536 | 22,501,470 |
Lease liabilities | 6,897,571 | 7,388,213 |
Other financial liabilities | 21,541,642 | |
Total | 180,003,512 | 164,765,330 |
Not later than one year [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 13,780,612 | |
Payables | 52,202,821 | 58,767,584 |
Guarantee deposits | 1,476,430 | 238,416 |
Bonds payable | 14,797,772 | 322,155 |
Long-term loans | 2,872,168 | 3,246,153 |
Lease liabilities | 649,879 | 658,092 |
Other financial liabilities | 17,233,129 | |
Total | 85,779,682 | 80,465,529 |
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 | |
Payables | 0 | 0 |
Guarantee deposits | 3,556,179 | 3,867,087 |
Bonds payable | 10,980,506 | 8,742,481 |
Long-term loans | 14,406,101 | 8,425,744 |
Lease liabilities | 1,311,239 | 1,222,822 |
Other financial liabilities | 4,308,513 | |
Total | 30,254,025 | 26,566,647 |
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 | |
Payables | 0 | 0 |
Guarantee deposits | 25,955,654 | 169,419 |
Bonds payable | 12,321,345 | 10,593,656 |
Long-term loans | 5,071,743 | 7,798,280 |
Lease liabilities | 1,223,724 | 1,207,385 |
Other financial liabilities | 0 | |
Total | 44,572,466 | 19,768,740 |
Later than five years [member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Short-term loans | 0 | |
Payables | 0 | 0 |
Guarantee deposits | 10,611,123 | 26,482,079 |
Bonds payable | 2,132,963 | 4,151,128 |
Long-term loans | 2,940,524 | 3,031,293 |
Lease liabilities | 3,712,729 | 4,299,914 |
Other financial liabilities | 0 | |
Total | $ 19,397,339 | $ 37,964,414 |
Financial Risk and Fair Value_6
Financial Risk and Fair Value Disclosures - Maturity Profile of Financial Liabilities Based on Contractual Undiscounted Payments and Contractual Maturity (Parenthetical) (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Investments in equity instruments designated at fair value through other comprehensive income | $ 5,753 | $ 3,213 |
Unsecured Exchangeable Bonds [Member] | ||
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [Line Items] | ||
Redemption of bonds at put price at the option of bondholders, date | Jul. 07, 2024 | |
Redemption of bonds at put price at the option of bondholders percentage of principal amount | 98.14% |
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, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) |
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | $ 443,601 | $ 14,487 | $ 705,918 |
Financial assets at fair value through profit or loss, noncurrent | 16,694,860 | 545,227 | 17,784,651 |
Financial assets at fair value through other comprehensive income, current | 5,753,379 | 187,896 | 3,213,057 |
Financial assets at fair value through other comprehensive income, noncurrent | 11,930,581 | 389,634 | 11,976,543 |
Financial liabilities at fair value through profit or loss, current | 1,019,362 | $ 33,291 | 438,397 |
Level 1 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 443,601 | 669,444 | |
Financial assets at fair value through profit or loss, noncurrent | 6,424,475 | 6,626,088 | |
Financial assets at fair value through other comprehensive income, current | 5,753,379 | 3,213,057 | |
Financial assets at fair value through other comprehensive income, noncurrent | 8,693,193 | 8,366,276 | |
Financial liabilities at fair value through profit or loss, current | 0 | 0 | |
Level 2 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 0 | 0 | |
Financial assets at fair value through profit or loss, noncurrent | 19,300 | 468,164 | |
Financial assets at fair value through other comprehensive income, current | 0 | 0 | |
Financial assets at fair value through other comprehensive income, noncurrent | 0 | 0 | |
Financial liabilities at fair value through profit or loss, current | 0 | 0 | |
Level 3 [member] | |||
Disclosure of detailed information about financial instruments [line items] | |||
Financial assets at fair value through profit or loss, current | 0 | 36,474 | |
Financial assets at fair value through profit or loss, noncurrent | 10,251,085 | 10,690,399 | |
Financial assets at fair value through other comprehensive income, current | 0 | 0 | |
Financial assets at fair value through other comprehensive income, noncurrent | 3,237,388 | 3,610,267 | |
Financial liabilities at fair value through profit or loss, current | $ 1,019,362 | $ 438,397 |
Financial Risk and Fair Value_8
Financial Risk and Fair Value Disclosures - Reconciliation for Fair Value Measurement in Level 3 Fair Value Hierarchy (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | |
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | $ 524,645,583 | ||
Ending balance | 546,576,832 | $ 17,850,321 | $ 524,645,583 |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 10,726,873 | 9,864,160 | |
Recognized in profit (loss) | (1,216,735) | (13,041) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 1,353,205 | 1,303,056 | |
Disposal | (117,737) | (546,783) | |
Return of capital | (37,730) | (26,672) | |
Transfer out of Level 3 | (461,403) | (326,577) | |
Exchange effect | 4,612 | 472,730 | |
Ending balance | 10,251,085 | 10,726,873 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Common stock [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 3,198,808 | 3,584,326 | |
Recognized in profit (loss) | (312,149) | (150,786) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 610,153 | 192,258 | |
Disposal | 0 | (186,579) | |
Return of capital | (1,384) | 0 | |
Transfer out of Level 3 | (461,403) | (326,577) | |
Exchange effect | 2,230 | 86,166 | |
Ending balance | 3,036,255 | 3,198,808 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Preferred stocks [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 2,865,258 | 2,580,246 | |
Recognized in profit (loss) | (277,994) | (328,602) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 294,046 | 485,256 | |
Disposal | (89,997) | (15,782) | |
Return of capital | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | (4,679) | 144,140 | |
Ending balance | 2,786,634 | 2,865,258 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Funds [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 4,626,333 | 3,464,652 | |
Recognized in profit (loss) | (617,764) | 519,572 | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 294,245 | 625,542 | |
Disposal | 0 | (194,572) | |
Return of capital | (36,346) | (26,672) | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 8,428 | 237,811 | |
Ending balance | 4,274,896 | 4,626,333 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Convertible bonds [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 36,474 | 234,936 | |
Recognized in profit (loss) | (8,828) | (53,225) | |
Recognized in other comprehensive income (loss) | 0 | 0 | |
Acquisition | 0 | 0 | |
Disposal | (27,740) | (149,850) | |
Return of capital | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 94 | 4,613 | |
Ending balance | 0 | 36,474 | |
Level 3 [member] | Financial assets at fair value through profit or loss [member] | Others [Member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Recognized in profit (loss) | 0 | ||
Recognized in other comprehensive income (loss) | 0 | ||
Acquisition | 154,761 | ||
Disposal | 0 | ||
Return of capital | 0 | ||
Transfer out of Level 3 | 0 | ||
Exchange effect | (1,461) | ||
Ending balance | 153,300 | ||
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 3,610,267 | 2,503,462 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | (372,879) | 1,106,805 | |
Acquisition | 0 | 0 | |
Disposal | 0 | 0 | |
Return of capital | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | 3,237,388 | 3,610,267 | |
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | Common stock [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 3,427,720 | 2,351,603 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | (365,395) | 1,076,117 | |
Acquisition | 0 | 0 | |
Disposal | 0 | 0 | |
Return of capital | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | 3,062,325 | 3,427,720 | |
Level 3 [member] | Financial assets at fair value through other comprehensive income [member] | Preferred stocks [member] | |||
Disclosure of fair value measurement of assets [line items] | |||
Beginning balance | 182,547 | 151,859 | |
Recognized in profit (loss) | 0 | 0 | |
Recognized in other comprehensive income (loss) | (7,484) | 30,688 | |
Acquisition | 0 | 0 | |
Disposal | 0 | 0 | |
Return of capital | 0 | 0 | |
Transfer out of Level 3 | 0 | 0 | |
Exchange effect | 0 | 0 | |
Ending balance | $ 175,063 | $ 182,547 |
Financial Risk and Fair Value_9
Financial Risk and Fair Value Disclosures - Reconciliation for Fair Value Measurement in Level 3 Derivatives Financial Liabilities (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | |
Disclosure of fair value measurement of liabilities [line items] | |||
Beginning balance | $ 201,834,635 | ||
Ending balance | 202,859,864 | $ 6,625,077 | $ 201,834,635 |
Derivatives [member] | Financial liabilities at fair value through profit or loss, category [member] | Level 3 [member] | |||
Disclosure of fair value measurement of liabilities [line items] | |||
Beginning balance | 438,397 | 2,380,599 | |
Recognized in profit (loss) | 580,965 | (1,433,405) | |
Derecognition | (508,797) | ||
Ending balance | $ 1,019,362 | $ 438,397 |
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 (Detail) | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Embedded Derivatives In Exchangeable Bonds [Member] | Binomial Tree Valuation Model [Member] | Historical volatility for shares, measurement input [member] | ||
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Significant unobservable input entity own equity instruments volatility | 27.70% | 36.46% |
Bottom of range [member] | Equity price risk [member] | Unlisted equity securities [member] | Discount for lack of marketability [member] | Market approach [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% | 0% |
Top of range [member] | Equity price risk [member] | Unlisted equity securities [member] | Discount for lack of marketability [member] | Market approach [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% | 50% |
Financial Risk and Fair Valu_11
Financial Risk and Fair Value Disclosures - Summary of Significant Unobservable Inputs of Fair Value Measurement in Level 3 Fair Value Hierarchy (Parenthetical) (Detail) - TWD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Embedded Derivatives In Exchangeable Bonds [Member] | Binomial Tree Valuation Model [Member] | Derivative Price Risk [Member] | Historical volatility for shares, measurement input [member] | ||
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Percentage of decrease in volatility | 5% | 5% |
Percentage of increase in volatility | 5% | 5% |
Increase (decrease) in profit or loss due to percentage decrease in volatility | $ 131 | $ 67 |
Increase (decrease) in profit or loss due to percentage increase in volatility | $ (119) | $ (77) |
Unlisted equity securities [member] | Discount for lack of marketability [member] | Market approach [member] | Equity price risk [member] | ||
Disclosure of significant unobservable inputs used in fair value measurement of equity [line items] | ||
Percentage increase in the discount for lack of marketability | 5% | 5% |
Percentage decrease in the discount for lack of marketability | 5% | 5% |
Increase (decrease) in other comprehensive income due to percentage increase in the discount for lack of marketability | $ (214) | $ (248) |
Increase (decrease) in other comprehensive income due to percentage decrease in the discount for lack of marketability | 214 | 248 |
Increase (decrease) in profit or loss due to percentage increase in the discount for lack of marketability | (261) | (273) |
Increase (decrease) in profit or loss due to percentage decrease in the discount for lack of marketability | $ 199 | $ 198 |
Financial Risk and Fair Valu_12
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, 2023 | Dec. 31, 2022 |
Disclosure of fair value measurement of liabilities [line items] | ||
Bonds payables (current portion included) | $ 38,359,352 | $ 28,184,687 |
Long-term loans (current portion included) | 22,883,344 | 19,279,342 |
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) | 38,367,168 | 28,346,985 |
Long-term loans (current portion included) | 22,883,344 | 19,279,342 |
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) | 32,827,211 | 22,916,330 |
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) | 5,539,957 | 5,430,655 |
Long-term loans (current portion included) | 22,883,344 | 19,279,342 |
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 - Geographic Non-current Assets Information (Detail) - TWD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | $ 260,306,236 | $ 207,863,887 |
Taiwan [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 158,066,796 | 130,812,383 |
Singapore [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 55,322,448 | 29,080,766 |
China (includes Hong Kong) [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 33,424,815 | 37,213,538 |
Japan [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | 13,415,669 | 10,736,562 |
Others [member] | ||
Disclosure of Geographical Areas [Line Items] | ||
Non-current assets | $ 76,508 | $ 20,638 |
Operating Segment Information_2
Operating Segment Information - Individual Customers Accounting for at least 10% of Operating Revenues (Detail) $ in Thousands, $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | |
Disclosure of Major Customers [Line Items] | ||||
Operating revenues | $ 222,533,000 | $ 7,267,570 | $ 278,705,264 | $ 213,011,018 |
Customer concentration risk [member] | Wafer fabrication [member] | Customer A [member] | ||||
Disclosure of Major Customers [Line Items] | ||||
Operating revenues | 16,615,745 | 24,061,849 | 21,935,208 | |
Customer concentration risk [member] | Wafer fabrication [member] | Customer B [member] | ||||
Disclosure of Major Customers [Line Items] | ||||
Operating revenues | $ 29,242,973 | $ 22,226,167 | $ 14,707,370 |
Capital Management - Debt to Ca
Capital Management - Debt to Capital Ratios (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($) |
Disclosure Of Capital Management [Abstract] | ||||||
Total liabilities | $ 202,859,864 | $ 6,625,077 | $ 201,834,635 | |||
Less: Cash and cash equivalents | (132,553,615) | (4,328,988) | (173,818,777) | $ (5,676,642) | $ (132,622,131) | $ (94,048,036) |
Net debt | 70,306,249 | 28,015,858 | ||||
Total equity | 343,716,968 | $ 11,225,244 | 322,810,948 | $ 264,375,047 | $ 223,139,562 | |
Total capital | $ 414,023,217 | $ 350,826,806 | ||||
Debt to capital ratios | 16.98% | 16.98% | 7.99% | 7.99% |