XML 136 R113.htm IDEA: XBRL DOCUMENT v3.21.1
Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2020
TWD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
TWD ($)
Dec. 31, 2018
TWD ($)
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance $ 17,979,444   $ 16,819,621 $ 15,265,311
Effects on initial application of IFRS 16     (31,904)  
Adjusted Balance On Property Plant And Equipment     16,787,717  
Additions 4,133,615   4,896,656 4,945,570
Disposals (19,358)   (25,785) (14,716)
Reclassifications 0   26,618 0
Depreciation expenses (4,098,993)   (3,695,815) (3,376,579)
Impairment losses     (9,938)  
Exchange adjustments (22)   (9) 35
Ending Balance 17,994,686 $ 640,836 17,979,444 16,819,621
Land [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 452,738   452,738 452,738
Adjusted Balance On Property Plant And Equipment     452,738  
Additions 0   0 0
Disposals 0   0 0
Reclassifications 0   0 0
Depreciation expenses 0   0 0
Ending Balance 452,738   452,738 452,738
Buildings [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 4,095,929   3,908,731 3,919,086
Adjusted Balance On Property Plant And Equipment     3,908,731  
Additions 132,572   116,238 247,186
Disposals 0   0 0
Reclassifications 258,421   455,792 199,724
Depreciation expenses (394,636)   (384,832) (457,265)
Ending Balance 4,092,286   4,095,929 3,908,731
Machinery and equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 11,163,121   10,232,093 8,813,727
Adjusted Balance On Property Plant And Equipment     10,232,093  
Additions 592,565   2,334,358 2,445,313
Disposals (8,940)   (16,033) (904)
Reclassifications 2,336,238   1,111,715 1,154,663
Depreciation expenses (2,734,667)   (2,489,070) (2,180,718)
Impairment losses     (9,938)  
Exchange adjustments (20)   (4) 12
Ending Balance 11,348,297   11,163,121 10,232,093
Tools [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 896,476   742,179 690,469
Adjusted Balance On Property Plant And Equipment     742,179  
Additions 409,832   781,465 591,229
Disposals (3,121)   (9,336) (11,745)
Reclassifications 398,798   7,880 7,604
Depreciation expenses (749,624)   (625,712) (535,378)
Ending Balance 952,361   896,476 742,179
Other equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 434,791   413,988 420,572
Effects on initial application of IFRS 16     (31,904)  
Adjusted Balance On Property Plant And Equipment     382,084  
Additions 142,776   224,287 172,652
Disposals (7,297)   (416) (2,067)
Reclassifications 159,195   25,042 26,026
Depreciation expenses (220,066)   (196,201) (203,218)
Exchange adjustments (2)   (5) 23
Ending Balance 509,397   434,791 413,988
Construction in progress and equipment to be inspected [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 936,389   1,069,892 968,719
Adjusted Balance On Property Plant And Equipment     1,069,892  
Additions 2,855,870   1,440,308 1,489,190
Disposals 0   0 0
Reclassifications (3,152,652)   (1,573,811) (1,388,017)
Depreciation expenses 0   0 0
Ending Balance 639,607   936,389 1,069,892
Gross carrying amount [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 70,401,687   67,064,936 63,638,420
Ending Balance 73,187,794   70,401,687 67,064,936
Gross carrying amount [member] | Land [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 452,738   452,738 452,738
Ending Balance 452,738   452,738 452,738
Gross carrying amount [member] | Buildings [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 10,821,972   10,254,531 9,809,970
Ending Balance 11,212,129   10,821,972 10,254,531
Gross carrying amount [member] | Machinery and equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 51,244,512   48,274,171 45,778,207
Ending Balance 53,246,474   51,244,512 48,274,171
Gross carrying amount [member] | Tools [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 5,008,321   4,402,711 4,004,703
Ending Balance 5,451,547   5,008,321 4,402,711
Gross carrying amount [member] | Other equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance 1,937,755   2,610,893 2,624,083
Ending Balance 2,185,299   1,937,755 2,610,893
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 936,389   1,069,892 968,719
Ending Balance 639,607   936,389 1,069,892
Accumulated depreciation and impairment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance (52,422,243)   (50,245,315) (48,373,109)
Ending Balance (55,193,108)   (52,422,243) (50,245,315)
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 (6,726,043)   (6,345,800) (5,890,884)
Ending Balance (7,119,843)   (6,726,043) (6,345,800)
Accumulated depreciation and impairment [member] | Machinery and equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance (40,081,391)   (38,042,078) (36,964,480)
Ending Balance (41,898,177)   (40,081,391) (38,042,078)
Accumulated depreciation and impairment [member] | Tools [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance (4,111,845)   (3,660,532) (3,314,234)
Ending Balance (4,499,186)   (4,111,845) (3,660,532)
Accumulated depreciation and impairment [member] | Other equipment [member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Beginning Balance (1,502,964)   (2,196,905) (2,203,511)
Ending Balance (1,675,902)   (1,502,964) (2,196,905)
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