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Lease Arrangements - Right-of-use Assets (Detail) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($) | Dec. 31, 2019 TWD ($) | Dec. 31, 2021 USD ($)
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | $ 32,734.4 | $ 27,728.5 |  | $ 1,180.0
Additions to right-of-use assets | 7,769.8 | 13,481.2 | $ 1,033.0 |
Depreciation of right-of-use assets | 2,556.2 | 2,681.6 | 2,622.7 |
Income from subleasing right-of-use assets (classified under other operating income and expenses, net) | 82.0 | 79.6 | 55.0 |
Land [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 29,778.6 | 25,141.9 |  |
Depreciation of right-of-use assets | 1,825.7 | 1,312.9 | 957.1 |
Buildings [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 2,918.1 | 2,544.8 |  |
Depreciation of right-of-use assets | 707.9 | 569.5 | 458.8 |
Machinery and equipment [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 3.4 |  |  |
Depreciation of right-of-use assets | 0.5 | 775.8 | 1,184.4 |
Office equipment [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Right-of-use assets | 34.3 | 41.8 |  |
Depreciation of right-of-use assets | $ 22.1 | $ 23.4 | $ 22.4 |

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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 2021-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_h&doctype=Standard -URIDate 2021-03-24 + 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 2021-01-01 -Paragraph 53 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of income from subleasing right-of-use assets. Sublease is a transaction for which an underlying asset is re-leased by a lessee (‘intermediate lessor’) to a third party, and the lease (‘head lease’) between the head lessor and lessee remains in effect. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_f&doctype=Standard -URIDate 2021-03-24 + 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. 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 2021-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_j&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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- Details
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