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v3.20.1

Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 TWD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 TWD ($) | Dec. 31, 2017 TWD ($)
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | $ 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 | 4,896,656 |  | 4,945,570 |
Disposals | (25,785) |  | (14,716) |
Reclassifications | 26,618 |  | 0 |
Depreciation expenses | (3,695,815) |  | (3,376,579) |
Impairment losses | (9,938) |  |  | $ (956)
Exchange adjustments | (9) |  | 35 |
Ending Balance | 17,979,444 | $ 601,118 | 16,819,621 | 15,265,311
Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 452,738 |  | 452,738 |
Adjusted Balance On Property Plant And Equipment | 452,738 |  |  |
Additions | 0 |  | 0 |
Disposals | 0 |  | 0 |
Reclassifications | 0 |  | 0 |
Depreciation expenses | 0 |  | 0 |
Exchange adjustments |  |  | 0 |
Ending Balance | 452,738 |  | 452,738 | 452,738
Buildings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 3,908,731 |  | 3,919,086 |
Adjusted Balance On Property Plant And Equipment | 3,908,731 |  |  |
Additions | 116,238 |  | 247,186 |
Disposals | 0 |  | 0 |
Reclassifications | 455,792 |  | 199,724 |
Depreciation expenses | (384,832) |  | (457,265) |
Exchange adjustments |  |  | 0 |
Ending Balance | 4,095,929 |  | 3,908,731 | 3,919,086
Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 10,232,093 |  | 8,813,727 |
Adjusted Balance On Property Plant And Equipment | 10,232,093 |  |  |
Additions | 2,334,358 |  | 2,445,313 |
Disposals | (16,033) |  | (904) |
Reclassifications | 1,111,715 |  | 1,154,663 |
Depreciation expenses | (2,489,070) |  | (2,180,718) |
Impairment losses | (9,938) |  |  |
Exchange adjustments | (4) |  | 12 |
Ending Balance | 11,163,121 |  | 10,232,093 | 8,813,727
Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 742,179 |  | 690,469 |
Adjusted Balance On Property Plant And Equipment | 742,179 |  |  |
Additions | 781,465 |  | 591,229 |
Disposals | (9,336) |  | (11,745) |
Reclassifications | 7,880 |  | 7,604 |
Depreciation expenses | (625,712) |  | (535,378) |
Exchange adjustments |  |  | 0 |
Ending Balance | 896,476 |  | 742,179 | 690,469
Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 413,988 |  | 420,572 |
Effects on initial application of IFRS 16 | (31,904) |  |  |
Adjusted Balance On Property Plant And Equipment | 382,084 |  |  |
Additions | 224,287 |  | 172,652 |
Disposals | (416) |  | (2,067) |
Reclassifications | 25,042 |  | 26,026 |
Depreciation expenses | (196,201) |  | (203,218) |
Exchange adjustments | (5) |  | 23 |
Ending Balance | 434,791 |  | 413,988 | 420,572
Construction in progress and equipment to be inspected [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 1,069,892 |  | 968,719 |
Adjusted Balance On Property Plant And Equipment | 1,069,892 |  |  |
Additions | 1,440,308 |  | 1,489,190 |
Disposals | 0 |  | 0 |
Reclassifications | (1,573,811) |  | (1,388,017) |
Depreciation expenses | 0 |  | 0 |
Exchange adjustments |  |  | 0 |
Ending Balance | 936,389 |  | 1,069,892 | 968,719
Gross carrying amount [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 67,064,936 |  | 63,638,420 |
Ending Balance | 70,401,687 |  | 67,064,936 | 63,638,420
Gross carrying amount [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 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 | 10,254,531 |  | 9,809,970 |
Ending Balance | 10,821,972 |  | 10,254,531 | 9,809,970
Gross carrying amount [member] | Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 48,274,171 |  | 45,778,207 |
Ending Balance | 51,244,512 |  | 48,274,171 | 45,778,207
Gross carrying amount [member] | Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 4,402,711 |  | 4,004,703 |
Ending Balance | 5,008,321 |  | 4,402,711 | 4,004,703
Gross carrying amount [member] | Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 2,610,893 |  | 2,624,083 |
Ending Balance | 1,937,755 |  | 2,610,893 | 2,624,083
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 | 1,069,892 |  | 968,719 |
Ending Balance | 936,389 |  | 1,069,892 | 968,719
Accumulated depreciation and impairment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (50,245,315) |  | (48,373,109) |
Ending Balance | (52,422,243) |  | (50,245,315) | (48,373,109)
Accumulated depreciation and impairment [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | 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 | (6,345,800) |  | (5,890,884) |
Ending Balance | (6,726,043) |  | (6,345,800) | (5,890,884)
Accumulated depreciation and impairment [member] | Machinery and equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (38,042,078) |  | (36,964,480) |
Ending Balance | (40,081,391) |  | (38,042,078) | (36,964,480)
Accumulated depreciation and impairment [member] | Tools [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (3,660,532) |  | (3,314,234) |
Ending Balance | (4,111,845) |  | (3,660,532) | (3,314,234)
Accumulated depreciation and impairment [member] | Other equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [Line Items] |  |  |  |
Beginning Balance | (2,196,905) |  | (2,203,511) |
Ending Balance | (1,502,964) |  | (2,196,905) | (2,203,511)
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 |
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 2019-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2019-03-27 + Details
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