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v3.25.1

Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (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 | $ 19,139,503 |  | $ 20,446,205 | $ 20,111,121
Additions | 5,451,431 |  | 3,228,471 | 4,918,482
Disposals | (22,740) |  | (27,612) | (48,681)
Reclassifications | 0 |  | 0 | 1,012
Depreciation expenses | (4,552,892) |  | (4,498,306) | (4,523,081)
Impairment losses | (18,618) | $ (568) | (9,236) | (12,721)
Exchange adjustments | 76 |  | (19) | 73
Ending Balance | 19,996,760 | $ 609,843 | 19,139,503 | 20,446,205
Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 454,738 |  | 452,738 | 452,738
Additions | 0 |  | 0 | 0
Disposals | 0 |  | 0 | 0
Reclassifications | 0 |  | 2,000 | 0
Depreciation expenses | 0 |  | 0 | 0
Impairment losses | 0 |  | 0 | 0
Exchange adjustments | 0 |  | 0 | 0
Ending Balance | 454,738 |  | 454,738 | 452,738
Buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 5,299,221 |  | 5,385,508 | 4,343,556
Additions | 5,619 |  | 1,303 | 3,780
Disposals | 0 |  | 0 | 0
Reclassifications | 1,241,424 |  | 469,597 | 1,503,432
Depreciation expenses | (605,548) |  | (557,187) | (465,260)
Impairment losses | 0 |  | 0 | 0
Exchange adjustments | 0 |  | 0 | 0
Ending Balance | 5,940,716 |  | 5,299,221 | 5,385,508
Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 11,481,773 |  | 12,758,368 | 13,282,185
Additions | 8,260 |  | 5,579 | 6,748
Disposals | (495) |  | (16,574) | (46,084)
Reclassifications | 3,016,325 |  | 1,787,140 | 2,603,381
Depreciation expenses | (3,050,253) |  | (3,043,504) | (3,075,191)
Impairment losses | (18,618) |  | (9,236) | (12,721)
Exchange adjustments | 24 |  | 0 | 50
Ending Balance | 11,437,016 |  | 11,481,773 | 12,758,368
Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 736,813 |  | 796,697 | 837,990
Additions | 665 |  | 291 | 636
Disposals | (21,744) |  | (11,038) | (2,597)
Reclassifications | 859,198 |  | 586,090 | 685,481
Depreciation expenses | (642,589) |  | (635,227) | (724,813)
Impairment losses | 0 |  | 0 | 0
Exchange adjustments | 0 |  | 0 | 0
Ending Balance | 932,343 |  | 736,813 | 796,697
Other [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 514,273 |  | 548,694 | 511,723
Additions | 0 |  | 1,376 | 0
Disposals | (501) |  | 0 | 0
Reclassifications | 220,864 |  | 226,610 | 294,765
Depreciation expenses | (254,502) |  | (262,388) | (257,817)
Impairment losses | 0 |  | 0 | 0
Exchange adjustments | 52 |  | (19) | 23
Ending Balance | 480,186 |  | 514,273 | 548,694
Construction in progress and equipment to be inspected [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 652,685 |  | 504,200 | 682,929
Additions | 5,436,887 |  | 3,219,922 | 4,907,318
Disposals | 0 |  | 0 | 0
Reclassifications | (5,337,811) |  | (3,071,437) | (5,086,047)
Depreciation expenses | 0 |  | 0 | 0
Impairment losses | 0 |  | 0 | 0
Exchange adjustments | 0 |  | 0 | 0
Ending Balance | 751,761 |  | 652,685 | 504,200
Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 84,341,575 |  | 81,866,361 | 78,108,945
Ending Balance | 88,146,592 |  | 84,341,575 | 81,866,361
Gross carrying amount [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 454,738 |  | 452,738 | 452,738
Ending Balance | 454,738 |  | 454,738 | 452,738
Gross carrying amount [member] | Buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 13,850,418 |  | 13,379,852 | 11,877,419
Ending Balance | 15,075,654 |  | 13,850,418 | 13,379,852
Gross carrying amount [member] | Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 60,650,428 |  | 59,197,255 | 57,176,339
Ending Balance | 62,448,765 |  | 60,650,428 | 59,197,255
Gross carrying amount [member] | Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 5,959,251 |  | 5,716,357 | 5,574,316
Ending Balance | 6,488,339 |  | 5,959,251 | 5,716,357
Gross carrying amount [member] | Other [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 2,774,055 |  | 2,615,959 | 2,345,204
Ending Balance | 2,927,335 |  | 2,774,055 | 2,615,959
Gross carrying amount [member] | Construction in progress and equipment to be inspected [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 652,685 |  | 504,200 | 682,929
Ending Balance | 751,761 |  | 652,685 | 504,200
Accumulated depreciation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (65,202,072) |  | (61,420,156) | (57,997,824)
Ending Balance | (68,149,832) |  | (65,202,072) | (61,420,156)
Accumulated depreciation and impairment [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 0 |  | 0 | 0
Ending Balance | 0 |  | 0 | 0
Accumulated depreciation and impairment [member] | Buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (8,551,197) |  | (7,994,344) | (7,533,863)
Ending Balance | (9,134,938) |  | (8,551,197) | (7,994,344)
Accumulated depreciation and impairment [member] | Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (49,168,655) |  | (46,438,887) | (43,894,154)
Ending Balance | (51,011,749) |  | (49,168,655) | (46,438,887)
Accumulated depreciation and impairment [member] | Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (5,222,438) |  | (4,919,660) | (4,736,326)
Ending Balance | (5,555,996) |  | (5,222,438) | (4,919,660)
Accumulated depreciation and impairment [member] | Other [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (2,259,782) |  | (2,067,265) | (1,833,481)
Ending Balance | (2,447,149) |  | (2,259,782) | (2,067,265)
Accumulated depreciation and impairment [member] | Construction in progress and equipment to be inspected [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 0 |  | 0 | 0
Ending Balance | $ 0 |  | $ 0 | $ 0

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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2024-03-27 + Details
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