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v3.25.1

Investment Properties - Summary of Investment Properties (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 investment property [line items] |  |  |  |
Beginning balance | $ 20,169,116 |  | $ 21,729,092 |
Depreciation expenses | 1,079,259 | $ 32,914 | 1,091,879 | $ 1,107,014
Ending balance | 20,055,044 | 611,621 | 20,169,116 | 21,729,092
Land [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 35,572 |  | 35,572 |
Ending balance | 35,572 | 1,085 | 35,572 | 35,572
Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 11,808,566 |  | 12,889,336 |
Ending balance | 11,600,957 | 353,796 | 11,808,566 | 12,889,336
Right-of-use assets [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 8,324,978 |  | 8,804,184 |
Ending balance | 8,418,515 | 256,740 | 8,324,978 | 8,804,184
Cost [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 26,340,018 | 803,295 | 26,968,895 | 26,454,348
Additions | 15,145 | 462 | 35,304 | 114,786
Disposals | (62) | (2) |  | (9,770)
Reclassification | (88,017) | (2,684) | (194,821) | 28,844
Effects of foreign currency exchange differences | 1,365,556 | 41,645 | (469,360) | 380,687
Ending balance | 27,632,640 | 842,716 | 26,340,018 | 26,968,895
Cost [member] | Land [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 35,572 | 1,085 | 35,572 | 35,572
Ending balance | 35,572 | 1,085 | 35,572 | 35,572
Cost [member] | Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 16,311,886 | 497,466 | 16,757,443 | 16,376,098
Additions | 15,145 | 462 | 35,304 | 114,786
Disposals | (62) | (2) |  | (9,770)
Reclassification | (88,176) | (2,689) | (182,588) | 39,158
Effects of foreign currency exchange differences | 845,530 | 25,786 | (298,273) | 237,171
Ending balance | 17,084,323 | 521,023 | 16,311,886 | 16,757,443
Cost [member] | Right-of-use assets [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 9,992,560 | 304,744 | 10,175,880 | 10,042,678
Reclassification | 159 | 5 | (12,233) | (10,314)
Effects of foreign currency exchange differences | 520,026 | 15,859 | (171,087) | 143,516
Ending balance | 10,512,745 | 320,608 | 9,992,560 | 10,175,880
Accumulated depreciations [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 6,170,902 | 188,194 | 5,239,803 | 4,309,561
Depreciation expenses | 1,079,259 | 32,914 | 1,091,879 | 1,107,014
Disposals | (28) | (1) |  | (8,354)
Reclassification | (9,286) | (282) | (55,340) | (210,817)
Effects of foreign currency exchange differences | 336,749 | 10,270 | (105,440) | 42,399
Ending balance | 7,577,596 | 231,095 | 6,170,902 | 5,239,803
Accumulated depreciations [member] | Buildings and improvements [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 4,503,320 | 137,338 | 3,868,107 | 3,272,146
Depreciation expenses | 748,055 | 22,813 | 766,322 | 779,431
Disposals | (28) | (1) |  | (8,354)
Reclassification | (9,340) | (284) | (51,031) | (198,631)
Effects of foreign currency exchange differences | 241,359 | 7,361 | (80,078) | 23,515
Ending balance | 5,483,366 | 167,227 | 4,503,320 | 3,868,107
Accumulated depreciations [member] | Right-of-use assets [member] |  |  |  |
Disclosure of detailed information about investment property [line items] |  |  |  |
Beginning balance | 1,667,582 | 50,856 | 1,371,696 | 1,037,415
Depreciation expenses | 331,204 | 10,101 | 325,557 | 327,583
Reclassification | 54 | 2 | (4,309) | (12,186)
Effects of foreign currency exchange differences | 95,390 | 2,909 | (25,362) | 18,884
Ending balance | $ 2,094,230 | $ 63,868 | $ 1,667,582 | $ 1,371,696

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- Definition The increase in investment property resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2024-01-01 -Paragraph 76 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_76_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2024-01-01 -Paragraph 79 -Subparagraph d -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=40&code=ifrs-tx-2024-en-r&anchor=para_79_d_ii&doctype=Standard -URIDate 2024-03-27 + Details
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