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v3.23.1

Other Intangible Assets - Summary of Carrying Amounts of Each Class of Other Intangible Assets (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($)
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | $ 24,563,707 |  |  |
Amortization expense | 3,931,079 | $ 127,923 | $ 4,054,120 | $ 3,733,377
Ending balance | 21,177,708 | 689,154 | 24,563,707 |
Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 40,205,066 | 1,308,333 | 40,355,771 | 36,993,875
Additions | 491,868 | 16,005 | 1,233,019 | 982,655
Disposals or derecognition | (50,313) | (1,637) | (324,321) | (70,007)
Disposal of subsidiaries |  |  | (801,642) | (38,125)
Acquisition through business combinations |  |  | 622 | 2,567,342
Effect of foreign currency exchange differences | 179,347 | 5,837 | (258,383) | (79,969)
Ending balance | 40,825,968 | 1,328,538 | 40,205,066 | 40,355,771
Accumulated depreciation and impairment [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 15,641,359 | 508,994 | 12,644,000 | 7,969,483
Amortization expense | 3,931,079 | 127,923 | 4,054,120 | 3,733,377
Impairment losses recognized | 715 | 23 |  |
Disposals or derecognition | (40,009) | (1,302) | (310,285) | (52,389)
Disposal of subsidiaries |  |  | (634,693) | (10,688)
Acquisition through business combinations |  |  | 222 | 1,026,187
Effect of foreign currency exchange differences | 115,116 | 3,746 | (112,005) | (21,970)
Ending balance | 19,648,260 | 639,384 | 15,641,359 | 12,644,000
Customer relationships [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 7,990,956 |  |  |
Ending balance | 6,974,365 | 226,956 | 7,990,956 |
Customer relationships [Member] | Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 11,704,605 | 380,885 | 11,890,283 | 11,000,001
Disposals or derecognition | 0 | 0 | (102,637) | 0
Acquisition through business combinations |  |  |  | 885,565
Effect of foreign currency exchange differences | 31,576 | 1,028 | (83,041) | 4,717
Ending balance | 11,736,181 | 381,913 | 11,704,605 | 11,890,283
Customer relationships [Member] | Accumulated depreciation and impairment [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 3,713,649 | 120,848 | 2,769,983 | 1,666,668
Amortization expense | 1,043,852 | 33,968 | 1,049,759 | 1,000,000
Impairment losses recognized | 0 | 0 |  |
Disposals or derecognition | 0 | 0 | (102,637) | 0
Acquisition through business combinations |  |  |  | 102,768
Effect of foreign currency exchange differences | 4,315 | 141 | (3,456) | 547
Ending balance | 4,761,816 | 154,957 | 3,713,649 | 2,769,983
Computer software [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 2,779,723 |  |  |
Ending balance | 2,310,815 | 75,197 | 2,779,723 |
Computer software [Member] | Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 7,051,694 | 229,473 | 6,966,449 | 4,606,878
Additions | 459,954 | 14,967 | 1,193,060 | 951,439
Disposals or derecognition | (37,442) | (1,218) | (150,670) | (55,413)
Disposal of subsidiaries |  |  | (789,998) | (38,125)
Acquisition through business combinations |  |  | 622 | 1,567,508
Effect of foreign currency exchange differences | 141,903 | 4,617 | (167,769) | (65,838)
Ending balance | 7,616,109 | 247,839 | 7,051,694 | 6,966,449
Computer software [Member] | Accumulated depreciation and impairment [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 4,271,971 | 139,017 | 4,170,576 | 2,677,339
Amortization expense | 957,708 | 31,165 | 971,190 | 729,330
Impairment losses recognized | 715 | 23 |  |
Disposals or derecognition | (31,456) | (1,024) | (139,907) | (47,345)
Disposal of subsidiaries |  |  | (626,338) | (10,688)
Acquisition through business combinations |  |  | 222 | 843,746
Effect of foreign currency exchange differences | 106,356 | 3,461 | (103,772) | (21,806)
Ending balance | 5,305,294 | 172,642 | 4,271,971 | 4,170,576
Patents and acquired specific technology [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 13,730,404 |  |  |
Ending balance | 11,829,167 | 384,939 | 13,730,404 |
Patents and acquired specific technology [Member] | Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 21,315,241 | 693,630 | 21,319,179 | 21,318,696
Additions | 500 | 16 | 2,000 | 171
Disposals or derecognition | 0 | 0 |  | 0
Disposal of subsidiaries |  |  | (5,401) |
Effect of foreign currency exchange differences | 1,611 | 53 | (537) | 312
Ending balance | 21,317,352 | 693,699 | 21,315,241 | 21,319,179
Patents and acquired specific technology [Member] | Accumulated depreciation and impairment [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 7,584,837 | 246,822 | 5,598,966 | 3,600,173
Amortization expense | 1,901,835 | 61,889 | 1,991,641 | 1,998,554
Impairment losses recognized | 0 | 0 |  |
Disposals or derecognition | 0 | 0 |  | 0
Disposal of subsidiaries |  |  | (5,288) |
Effect of foreign currency exchange differences | 1,513 | 49 | (482) | 239
Ending balance | 9,488,185 | 308,760 | 7,584,837 | 5,598,966
Others [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 62,624 |  |  |
Ending balance | 63,361 | 2,062 | 62,624 |
Others [Member] | Cost [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 133,526 | 4,345 | 179,860 | 68,300
Additions | 31,414 | 1,022 | 37,959 | 31,045
Disposals or derecognition | (12,871) | (419) | (71,014) | (14,594)
Disposal of subsidiaries |  |  | (6,243) |
Acquisition through business combinations |  |  |  | 114,269
Effect of foreign currency exchange differences | 4,257 | 139 | (7,036) | (19,160)
Ending balance | 156,326 | 5,087 | 133,526 | 179,860
Others [Member] | Accumulated depreciation and impairment [Member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 70,902 | 2,307 | 104,475 | 25,303
Amortization expense | 27,684 | 901 | 41,530 | 5,493
Impairment losses recognized | 0 | 0 |  |
Disposals or derecognition | (8,553) | (278) | (67,741) | (5,044)
Disposal of subsidiaries |  |  | (3,067) |
Acquisition through business combinations |  |  |  | 79,673
Effect of foreign currency exchange differences | 2,932 | 95 | (4,295) | (950)
Ending balance | $ 92,965 | $ 3,025 | $ 70,902 | $ 104,475

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