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v3.23.1

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($)
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | $ 239,867,550 |  |  |
Additions | 75,800,574 | $ 2,466,664 | $ 74,417,541 | $ 59,024,201
Depreciation expense | 48,945,756 | 1,592,768 | 48,604,160 | 46,016,548
Ending balance | 268,234,618 | 8,728,754 | 239,867,550 |
Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 619,194,154 | 20,149,500 | 616,363,382 | 576,444,907
Additions | 75,800,574 | 2,466,664 | 74,417,541 | 59,024,201
Disposals | (9,832,977) | (319,979) | (13,839,233) | (15,730,635)
Disposal of subsidiaries |  |  | (48,138,060) | (8,127,308)
Reclassification | (103,009) | (3,353) | (4,807,434) | 538,074
Acquisitions through business combinations |  |  | 41,526 | 7,069,740
Effect of foreign currency exchange differences | 6,669,566 | 217,038 | (4,843,568) | (2,855,597)
Ending balance | 691,728,308 | 22,509,870 | 619,194,154 | 616,363,382
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 379,326,604 | 12,343,853 | 381,997,985 | 344,351,580
Depreciation expense | 48,945,756 | 1,592,768 | 48,604,160 | 46,016,548
Impairment losses recognized | 405,399 | 13,192 | 126,766 | 992,273
Disposals | (9,334,120) | (303,746) | (12,782,153) | (11,006,578)
Disposal of subsidiaries |  |  | (31,444,931) | (580,895)
Reclassification | 198,534 | 6,461 | (3,800,474) | 311,848
Acquisitions through business combinations |  |  | 3,760 | 4,187,020
Effect of foreign currency exchange differences | 3,951,517 | 128,588 | (3,378,509) | (2,273,811)
Ending balance | 423,493,690 | 13,781,116 | 379,326,604 | 381,997,985
Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 11,530,540 |  |  |
Ending balance | 13,006,893 | 423,264 | 11,530,540 |
Land [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 11,530,540 | 375,221 | 10,457,960 | 10,333,822
Additions | 1,453,816 | 47,309 | 1,126,012 |
Disposals | (63,446) | (2,064) | (2,400) |
Reclassification | 0 | 0 | 393 |
Acquisitions through business combinations |  |  |  | 167,136
Effect of foreign currency exchange differences | 85,983 | 2,798 | (51,425) | (42,998)
Ending balance | 13,006,893 | 423,264 | 11,530,540 | 10,457,960
Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 79,273,937 |  |  |
Ending balance | 91,623,291 | 2,981,558 | 79,273,937 |
Buildings and improvements [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 152,641,699 | 4,967,188 | 158,812,500 | 153,972,960
Additions | 302,092 | 9,831 | 2,718,507 | 86,409
Disposals | (1,129,046) | (36,741) | (659,833) | (365,758)
Disposal of subsidiaries |  |  | (12,344,067) | (3,665,811)
Reclassification | 19,150,796 | 623,195 | 5,038,562 | 7,367,875
Acquisitions through business combinations |  |  | 5,284 | 1,680,497
Effect of foreign currency exchange differences | 1,833,158 | 59,654 | (929,254) | (263,672)
Ending balance | 172,798,699 | 5,623,127 | 152,641,699 | 158,812,500
Buildings and improvements [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 73,367,762 | 2,387,496 | 75,998,643 | 68,563,380
Depreciation expense | 7,516,917 | 244,612 | 7,620,561 | 7,401,223
Impairment losses recognized | 244,719 | 7,963 | 15,915 |
Disposals | (1,081,082) | (35,180) | (565,551) | (300,832)
Disposal of subsidiaries |  |  | (5,369,867) | (153,002)
Reclassification | 198,534 | 6,461 | (3,924,490) | 3,462
Acquisitions through business combinations |  |  | 241 | 548,190
Effect of foreign currency exchange differences | 928,558 | 30,217 | (407,690) | (63,778)
Ending balance | 81,175,408 | 2,641,569 | 73,367,762 | 75,998,643
Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 128,202,516 |  |  |
Ending balance | 142,129,485 | 4,625,105 | 128,202,516 |
Machinery and equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 423,488,598 | 13,780,950 | 416,368,479 | 376,745,448
Additions | 1,514,563 | 49,286 | 1,332,497 | 695,561
Disposals | (7,457,317) | (242,672) | (10,999,274) | (12,818,849)
Disposal of subsidiaries |  |  | (33,309,236) | (3,223,448)
Reclassification | 51,716,057 | 1,682,917 | 53,856,444 | 52,980,977
Acquisitions through business combinations |  |  | 28,282 | 4,445,789
Effect of foreign currency exchange differences | 4,232,801 | 137,742 | (3,788,594) | (2,456,999)
Ending balance | 473,494,702 | 15,408,223 | 423,488,598 | 416,368,479
Machinery and equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 295,286,082 | 9,609,049 | 293,828,682 | 263,748,778
Depreciation expense | 39,819,816 | 1,295,796 | 39,147,076 | 36,373,712
Impairment losses recognized | 155,334 | 5,055 | 105,815 | 981,535
Disposals | (7,114,817) | (231,527) | (10,151,428) | (8,306,990)
Disposal of subsidiaries |  |  | (24,974,206) | (345,834)
Reclassification | 365,180 | 11,884 | 142,234 | 497,230
Acquisitions through business combinations |  |  | 1,067 | 3,049,895
Effect of foreign currency exchange differences | 2,853,622 | 92,861 | (2,813,158) | (2,169,644)
Ending balance | 331,365,217 | 10,783,118 | 295,286,082 | 293,828,682
Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 3,928,284 |  |  |
Ending balance | 3,401,543 | 110,691 | 3,928,284 |
Other equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 14,601,044 | 475,140 | 16,870,978 | 18,755,116
Additions | 137,208 | 4,465 | 135,439 | 47,137
Disposals | (1,176,897) | (38,298) | (2,144,766) | (2,419,423)
Disposal of subsidiaries |  |  | (1,247,326) | (445,506)
Reclassification | 560,828 | 18,250 | 1,181,455 | 222,066
Acquisitions through business combinations |  |  | 3,108 | 722,490
Effect of foreign currency exchange differences | 232,425 | 7,563 | (197,844) | (10,902)
Ending balance | 14,354,608 | 467,120 | 14,601,044 | 16,870,978
Other equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 10,672,760 | 347,308 | 12,170,660 | 12,039,422
Depreciation expense | 1,609,023 | 52,360 | 1,836,523 | 2,241,613
Impairment losses recognized | 5,346 | 174 | 5,036 | 10,738
Disposals | (1,138,221) | (37,039) | (2,065,174) | (2,398,756)
Disposal of subsidiaries |  |  | (1,100,858) | (82,059)
Reclassification | (365,180) | (11,884) | (18,218) | (188,844)
Acquisitions through business combinations |  |  | 2,452 | 588,935
Effect of foreign currency exchange differences | 169,337 | 5,510 | (157,661) | (40,389)
Ending balance | 10,953,065 | 356,429 | 10,672,760 | 12,170,660
Construction in progress and machinery under installation [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 16,932,273 |  |  |
Ending balance | 18,073,406 | 588,136 | 16,932,273 |
Construction in progress and machinery under installation [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 16,932,273 | 551,001 | 13,853,465 | 16,637,561
Additions | 72,392,895 | 2,355,773 | 69,105,086 | 58,195,094
Disposals | (6,271) | (204) | (32,960) | (126,605)
Disposal of subsidiaries |  |  | (1,237,431) | (792,543)
Reclassification | (71,530,690) | (2,327,715) | (64,884,288) | (60,032,844)
Acquisitions through business combinations |  |  | 4,852 | 53,828
Effect of foreign currency exchange differences | 285,199 | 9,281 | 123,549 | (81,026)
Ending balance | $ 18,073,406 | $ 588,136 | $ 16,932,273 | $ 13,853,465

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