XML 117 R103.htm IDEA: XBRL DOCUMENT
v3.25.1

Trade Notes and Accounts Receivable, Net - Summary of Trade Notes and Accounts Receivable, Net (Detail) $ in Millions, $ in Millions | Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($)
--- | --- | --- | --- | ---
Disclosure Of Financial Assets [Line Items] |  |  |  |
Trade notes and accounts receivable | $ 26,026 | $ 794 | $ 24,842 | $ 24,672
Less: Loss allowance | 1,143 |  | 1,102 |
Gross carrying amount [Member] |  |  |  |
Disclosure Of Financial Assets [Line Items] |  |  |  |
Trade notes and accounts receivable | $ 27,169 |  | $ 25,944 |

X
- Definition Allowance account for credit loss of financial assets. + References No definition available. + Details
Name: | cht_AllowanceAccountForCreditLossOfFinancialAssets
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 68 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_68&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentTradeReceivables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | ifrs-full_DisclosureOfFinancialAssetsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |