XML 165 R151.htm IDEA: XBRL DOCUMENT
v3.25.1

Provisions - Summary of Provisions (Detail) $ in Millions, $ in Millions | Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($)
--- | --- | --- | --- | --- | ---
Provisions [abstract] |  |  |  |  |
Employee benefits | $ 416 |  | $ 387 |  |
Warranties | 281 |  | 238 |  |
Onerous contracts | 266 |  | 194 |  |
Others | 14 |  | 3 |  |
Provisions | 977 |  | 822 | $ 399 | $ 427
Current | 442 | $ 13 | 337 |  |
Noncurrent | $ 535 | $ 16 | $ 485 |  |

X
- Definition Provisions for onerous contracts. + References No definition available. + Details
Name: | cht_ProvisionsForOnerousContracts
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph l -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_l&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of miscellaneous other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_MiscellaneousOtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph l -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_l&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities of uncertain timing or amount, including provisions for employee benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph l -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_l&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_Provisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_ProvisionsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProvisionsForEmployeeBenefits
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provision for estimated costs of making good under warranties for products sold. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Section Example 1 Warranties -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex1_TI -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 37 -IssueDate 2024-01-01 -Paragraph 87 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_87&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_WarrantyProvision
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant