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v3.25.1

Profit Before Income Tax - Summary of Depreciation and Amortization (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($)
Analysis of income and expense [Line Items] |  |  |  |
Property, plant and equipment | $ 53,500,799 | $ 1,631,619 | $ 51,799,481 | $ 48,945,756
Right-of-use assets | 1,415,140 | 43,158 | 1,304,020 | 1,468,040
Investment properties | 1,079,259 | 32,914 | 1,091,879 | 1,107,014
Intangible assets amortization | 3,820,014 | 116,499 | 3,906,483 | 3,931,079
Depreciation and amortization | 59,815,212 | 1,824,190 | 58,101,863 | 55,451,889
Depreciation expense | 55,995,198 | 1,707,691 | 54,195,380 | 51,520,810
Operating costs [member] |  |  |  |
Analysis of income and expense [Line Items] |  |  |  |
Intangible assets amortization | 2,370,726 | 72,300 | 2,433,492 | 2,465,837
Depreciation expense | 51,031,493 | 1,556,313 | 49,701,740 | 47,894,701
Operating expenses [member] |  |  |  |
Analysis of income and expense [Line Items] |  |  |  |
Intangible assets amortization | 1,449,288 | 44,199 | 1,472,991 | 1,465,242
Depreciation expense | $ 4,963,705 | $ 151,378 | $ 4,493,640 | $ 3,626,109

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- Definition The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 28 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_28_e&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2024-01-01 -Paragraph 23 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_e&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B13 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_d&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 99 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_99&doctype=Standard -URIDate 2024-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 104 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_104&doctype=Standard -URIDate 2024-03-27 + Details
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