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Lease Arrangements - Right-of-use Assets (Detail) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 TWD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2024 USD ($)
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | $ 40,128.4 | $ 40,424.7 |  | $ 1,223.8
Additions to right-of-use assets | 4,579.6 | 2,145.4 | $ 12,610.7 |
Depreciation of right-of-use assets | 3,679.5 | 3,459.0 | 3,073.0 |
Land [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 36,981.0 | 37,437.1 |  |
Depreciation of right-of-use assets | 2,541.9 | 2,459.1 | 2,119.8 |
Buildings [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 3,103.9 | 2,946.0 |  |
Depreciation of right-of-use assets | 1,114.3 | 976.1 | 928.7 |
Machinery and equipment [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Depreciation of right-of-use assets | 0.0 | 0.4 | 0.9 |
Office equipment [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 43.5 | 41.6 |  |
Depreciation of right-of-use assets | $ 23.3 | $ 23.4 | $ 23.6 |

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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_h&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of depreciation of right-of-use assets. [Refer: Depreciation and amortisation expense; Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_j&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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- Details
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