XML 121 R103.htm IDEA: XBRL DOCUMENT v3.25.1
Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
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