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v3.22.1

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($) | Dec. 31, 2019 TWD ($)
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | $ 234,365,397 |  |  |
Depreciation expense | 48,604,160 | $ 1,752,133 | $ 46,016,548 | $ 45,240,667
Additions | 74,417,541 | 2,682,681 | 59,024,201 | 63,073,887
Ending balance | 239,867,550 | 8,646,992 | 234,365,397 |
Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 616,363,382 | 22,219,299 | 576,444,907 | 535,004,044
Additions | 74,417,541 | 2,682,681 | 59,024,201 | 63,073,887
Disposals | (13,839,233) | (498,890) | (15,730,635) | (22,630,764)
Disposal of subsidiaries | (48,138,060) | (1,735,330) | (8,127,308) |
Reclassification | (4,807,434) | (173,304) | 538,074 | 745,331
Acquisition through business combinations | 41,526 | 1,497 | 7,069,740 | 7,034,875
Effect of foreign currency exchange differences | (4,843,568) | (174,606) | (2,855,597) | (6,782,466)
Ending balance | 619,194,154 | 22,321,347 | 616,363,382 | 576,444,907
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 381,997,985 | 13,770,655 | 344,351,580 | 320,688,535
Depreciation expense | 48,604,160 | 1,752,133 | 46,016,548 | 45,240,667
Impairment losses recognized | 126,766 | 4,571 | 992,273 | 201,006
Disposals | (12,782,153) | (460,784) | (11,006,578) | (22,024,853)
Disposal of subsidiaries | (31,444,931) | (1,133,560) | (580,895) |
Reclassification | (3,800,474) | (137,004) | 311,848 | 294,232
Acquisition through business combinations | 3,760 | 137 | 4,187,020 | 4,465,048
Effect of foreign currency exchange differences | (3,378,509) | (121,793) | (2,273,811) | (4,513,055)
Ending balance | 379,326,604 | 13,674,355 | 381,997,985 | 344,351,580
Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 10,457,960 |  |  |
Ending balance | 11,530,540 | 415,665 | 10,457,960 |
Land [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 10,457,960 | 376,999 | 10,333,822 | 10,165,969
Additions | 1,126,012 | 40,592 |  |
Disposals | (2,400) | (86) |  |
Reclassification | 393 | 14 |  |
Acquisition through business combinations |  |  | 167,136 | 189,111
Effect of foreign currency exchange differences | (51,425) | (1,854) | (42,998) | (21,258)
Ending balance | 11,530,540 | 415,665 | 10,457,960 | 10,333,822
Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 82,813,857 |  |  |
Ending balance | 79,273,937 | 2,857,748 | 82,813,857 |
Buildings and improvements [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 158,812,500 | 5,725,036 | 153,972,960 | 141,708,011
Additions | 2,718,507 | 98,000 | 86,409 | 806,844
Disposals | (659,833) | (23,786) | (365,758) | (983,690)
Disposal of subsidiaries | (12,344,067) | (444,992) | (3,665,811) |
Reclassification | 5,038,562 | 181,635 | 7,367,875 | 13,601,469
Acquisition through business combinations | 5,284 | 190 | 1,680,497 | 1,044,383
Effect of foreign currency exchange differences | (929,254) | (33,499) | (263,672) | (2,204,057)
Ending balance | 152,641,699 | 5,502,584 | 158,812,500 | 153,972,960
Buildings and improvements [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 75,998,643 | 2,739,677 | 68,563,380 | 62,744,074
Depreciation expense | 7,620,561 | 274,714 | 7,401,223 | 6,989,392
Impairment losses recognized | 15,915 | 574 |  | 78,562
Disposals | (565,551) | (20,388) | (300,832) | (881,149)
Disposal of subsidiaries | (5,369,867) | (193,579) | (153,002) |
Reclassification | (3,924,490) | (141,474) | 3,462 | 210,558
Acquisition through business combinations | 241 | 9 | 548,190 | 445,682
Effect of foreign currency exchange differences | (407,690) | (14,697) | (63,778) | (1,023,739)
Ending balance | 73,367,762 | 2,644,836 | 75,998,643 | 68,563,380
Machinery and equipment1 [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 122,539,797 |  |  |
Ending balance | 128,202,516 | 4,621,577 | 122,539,797 |
Machinery and equipment1 [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 416,368,479 | 15,009,678 | 376,745,448 | 353,838,390
Additions | 1,332,497 | 48,035 | 695,561 | 413,008
Disposals | (10,999,274) | (396,513) | (12,818,849) | (19,139,634)
Disposal of subsidiaries | (33,309,236) | (1,200,765) | (3,223,448) |
Reclassification | 53,856,444 | 1,941,473 | 52,980,977 | 41,302,651
Acquisition through business combinations | 28,282 | 1,020 | 4,445,789 | 5,507,315
Effect of foreign currency exchange differences | (3,788,594) | (136,575) | (2,456,999) | (5,176,282)
Ending balance | 423,488,598 | 15,266,353 | 416,368,479 | 376,745,448
Machinery and equipment1 [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 293,828,682 | 10,592,238 | 263,748,778 | 245,750,420
Depreciation expense | 39,147,076 | 1,411,214 | 36,373,712 | 35,747,308
Impairment losses recognized | 105,815 | 3,815 | 981,535 | 102,056
Disposals | (10,151,428) | (365,949) | (8,306,990) | (18,640,266)
Disposal of subsidiaries | (24,974,206) | (900,296) | (345,834) |
Reclassification | 142,234 | 5,127 | 497,230 | 83,777
Acquisition through business combinations | 1,067 | 39 | 3,049,895 | 4,000,338
Effect of foreign currency exchange differences | (2,813,158) | (101,412) | (2,169,644) | (3,294,855)
Ending balance | 295,286,082 | 10,644,776 | 293,828,682 | 263,748,778
Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 4,700,318 |  |  |
Ending balance | 3,928,284 | 141,610 | 4,700,318 |
Other equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 16,870,978 | 608,182 | 18,755,116 | 18,380,122
Additions | 135,439 | 4,883 | 47,137 | 76,671
Disposals | (2,144,766) | (77,317) | (2,419,423) | (2,507,440)
Disposal of subsidiaries | (1,247,326) | (44,965) | (445,506) |
Reclassification | 1,181,455 | 42,590 | 222,066 | 3,062,838
Acquisition through business combinations | 3,108 | 112 | 722,490 | 43,611
Effect of foreign currency exchange differences | (197,844) | (7,132) | (10,902) | (300,686)
Ending balance | 14,601,044 | 526,353 | 16,870,978 | 18,755,116
Other equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 12,170,660 | 438,740 | 12,039,422 | 12,194,041
Depreciation expense | 1,836,523 | 66,205 | 2,241,613 | 2,503,967
Impairment losses recognized | 5,036 | 182 | 10,738 | 20,388
Disposals | (2,065,174) | (74,447) | (2,398,756) | (2,503,438)
Disposal of subsidiaries | (1,100,858) | (39,685) | (82,059) |
Reclassification | (18,218) | (657) | (188,844) | (103)
Acquisition through business combinations | 2,452 | 89 | 588,935 | 19,028
Effect of foreign currency exchange differences | (157,661) | (5,684) | (40,389) | (194,461)
Ending balance | 10,672,760 | 384,743 | 12,170,660 | 12,039,422
Construction in progress and machinery under installation [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 13,853,465 |  |  |
Ending balance | 16,932,273 | 610,392 | 13,853,465 |
Construction in progress and machinery under installation [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 13,853,465 | 499,404 | 16,637,561 | 10,911,552
Additions | 69,105,086 | 2,491,171 | 58,195,094 | 61,777,364
Disposals | (32,960) | (1,188) | (126,605) |
Disposal of subsidiaries | (1,237,431) | (44,608) | (792,543) |
Reclassification | (64,884,288) | (2,339,016) | (60,032,844) | (57,221,627)
Acquisition through business combinations | 4,852 | 175 | 53,828 | 250,455
Effect of foreign currency exchange differences | 123,549 | 4,454 | (81,026) | 919,817
Ending balance | $ 16,932,273 | $ 610,392 | $ 13,853,465 | $ 16,637,561

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