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v3.25.1

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($)
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | $ 264,871,522 |  |  |
Additions | 96,207,546 | $ 2,934,052 | $ 48,758,649 | $ 75,800,574
Depreciation expense | 53,500,799 | 1,631,619 | 51,799,481 | 48,945,756
Ending balance | 312,531,471 | 9,531,304 | 264,871,522 |
Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 720,974,420 | 21,987,631 | 691,728,308 | 619,194,154
Additions | 96,207,546 | 2,934,052 | 48,758,649 | 75,800,574
Disposals | (15,116,549) | (461,011) | (18,153,613) | (9,832,977)
Reclassification | (16,013) | (488) | 182,588 | (103,009)
Acquisitions through business combinations | 9,578,821 | 292,126 | 1,632,097 |
Effect of foreign currency exchange differences | 9,197,659 | 280,501 | (3,173,609) | 6,669,566
Ending balance | 820,825,884 | 25,032,811 | 720,974,420 | 691,728,308
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 456,102,898 | 13,909,817 | 423,493,690 | 379,326,604
Depreciation expense | 53,500,799 | 1,631,619 | 51,799,481 | 48,945,756
Impairment losses recognized | 133,880 | 4,083 | 146,570 | 405,399
Disposals | (14,437,811) | (440,312) | (17,981,026) | (9,334,120)
Reclassification | (71,961) | (2,194) | 51,031 | 198,534
Acquisitions through business combinations | 8,237,380 | 251,217 | 885,900 |
Effect of foreign currency exchange differences | 4,829,228 | 147,277 | (2,292,748) | 3,951,517
Ending balance | 508,294,413 | 15,501,507 | 456,102,898 | 423,493,690
Land [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance |  |  | 13,006,893 | 11,530,540
Additions |  |  |  | 1,453,816
Disposals |  |  |  | (63,446)
Reclassification |  |  |  | 0
Effect of foreign currency exchange differences |  |  |  | 85,983
Ending balance |  |  |  | 13,006,893
Land and Land Improvements [Member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 13,523,172 |  |  |
Ending balance | 17,570,624 | 535,853 | 13,523,172 |
Land and Land Improvements [Member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 13,581,613 | 414,200 | 13,006,893 |
Additions | 3,931,878 | 119,911 | 424,130 |
Disposals | (152,357) | (4,646) | (3,436) |
Reclassification | 4,699 | 143 | 142,562 |
Acquisitions through business combinations | 175,261 | 5,345 | 18,049 |
Effect of foreign currency exchange differences | 106,652 | 3,252 | (6,585) |
Ending balance | 17,647,746 | 538,205 | 13,581,613 | 13,006,893
Land and Land Improvements [Member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 58,441 | 1,782 |  |
Depreciation expense | 17,255 | 526 | 17,860 |
Disposals |  |  | (3,436) |
Reclassification |  |  | 43,725 |
Effect of foreign currency exchange differences | 1,426 | 44 | 292 |
Ending balance | 77,122 | 2,352 | 58,441 |
Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 100,733,745 |  |  |
Ending balance | 121,588,485 | 3,708,096 | 100,733,745 |
Buildings and improvements [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 181,833,417 | 5,545,393 | 172,798,699 | 152,641,699
Additions | 6,177,957 | 188,410 | 1,866,786 | 302,092
Disposals | (3,250,387) | (99,127) | (8,786,519) | (1,129,046)
Reclassification | 23,003,450 | 701,539 | 16,398,574 | 19,150,796
Acquisitions through business combinations | 1,153,289 | 35,171 | 150,347 |
Effect of foreign currency exchange differences | 3,549,566 | 108,251 | (594,470) | 1,833,158
Ending balance | 212,467,292 | 6,479,637 | 181,833,417 | 172,798,699
Buildings and improvements [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 81,099,672 | 2,473,305 | 81,175,408 | 73,367,762
Depreciation expense | 10,126,682 | 308,835 | 8,896,551 | 7,516,917
Impairment losses recognized | 16,472 | 502 | 134,999 | 244,719
Disposals | (2,994,916) | (91,336) | (8,771,076) | (1,081,082)
Reclassification | 14,145 | 431 | (35,568) | 198,534
Acquisitions through business combinations | 955,951 | 29,154 | 24,770 |
Effect of foreign currency exchange differences | 1,660,801 | 50,650 | (325,412) | 928,558
Ending balance | 90,878,807 | 2,771,541 | 81,099,672 | 81,175,408
Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 126,826,200 |  |  |
Ending balance | 137,430,483 | 4,191,232 | 126,826,200 |
Machinery and equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 490,699,539 | 14,964,914 | 473,494,702 | 423,488,598
Additions | 2,033,804 | 62,025 | 2,308,779 | 1,514,563
Disposals | (10,611,069) | (323,607) | (7,912,516) | (7,457,317)
Reclassification | 48,348,102 | 1,474,477 | 24,044,088 | 51,716,057
Acquisitions through business combinations | 7,575,012 | 231,016 | 1,159,537 |
Effect of foreign currency exchange differences | 4,611,503 | 140,638 | (2,395,051) | 4,232,801
Ending balance | 542,656,891 | 16,549,463 | 490,699,539 | 473,494,702
Machinery and equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 363,873,339 | 11,097,083 | 331,365,217 | 295,286,082
Depreciation expense | 41,930,945 | 1,278,772 | 41,403,363 | 39,819,816
Impairment losses recognized | 32,455 | 990 | 10,802 | 155,334
Disposals | (10,352,348) | (315,717) | (7,774,818) | (7,114,817)
Reclassification | (2,892) | (88) | 7,674 | 365,180
Acquisitions through business combinations | 6,918,742 | 211,002 | 735,808 |
Effect of foreign currency exchange differences | 2,826,167 | 86,189 | (1,874,707) | 2,853,622
Ending balance | 405,226,408 | 12,358,231 | 363,873,339 | 331,365,217
Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 3,023,212 |  |  |
Ending balance | 3,203,839 | 97,708 | 3,023,212 |
Other equipment [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 14,094,658 | 429,846 | 14,354,608 | 14,601,044
Additions | 239,234 | 7,296 | 141,158 | 137,208
Disposals | (1,097,340) | (33,466) | (1,441,685) | (1,176,897)
Reclassification | 1,084,919 | 33,087 | 992,109 | 560,828
Acquisitions through business combinations | 660,442 | 20,142 | 136,687 |
Effect of foreign currency exchange differences | 334,002 | 10,186 | (88,219) | 232,425
Ending balance | 15,315,915 | 467,091 | 14,094,658 | 14,354,608
Other equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 11,071,446 | 337,647 | 10,953,065 | 10,672,760
Depreciation expense | 1,425,917 | 43,486 | 1,481,707 | 1,609,023
Impairment losses recognized | 276 | 9 | 769 | 5,346
Disposals | (1,090,547) | (33,259) | (1,431,696) | (1,138,221)
Reclassification | 1,463 | 45 | 35,200 | (365,180)
Acquisitions through business combinations | 362,687 | 11,061 | 125,322 |
Effect of foreign currency exchange differences | 340,834 | 10,394 | (92,921) | 169,337
Ending balance | 12,112,076 | 369,383 | 11,071,446 | 10,953,065
Construction in progress and machinery under installation [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 20,765,193 |  |  |
Ending balance | 32,738,040 | 998,415 | 20,765,193 |
Construction in progress and machinery under installation [member] | Cost [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning balance | 20,765,193 | 633,278 | 18,073,406 | 16,932,273
Additions | 83,824,673 | 2,556,410 | 44,017,796 | 72,392,895
Disposals | (5,396) | (165) | (9,457) | (6,271)
Reclassification | (72,457,183) | (2,209,734) | (41,394,745) | (71,530,690)
Acquisitions through business combinations | 14,817 | 452 | 167,477 |
Effect of foreign currency exchange differences | 595,936 | 18,174 | (89,284) | 285,199
Ending balance | 32,738,040 | 998,415 | $ 20,765,193 | $ 18,073,406
Construction in progress and machinery under installation [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Impairment losses recognized | 84,677 | 2,582 |  |
Reclassification | $ (84,677) | $ (2,582) |  |

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