XML 173 R157.htm IDEA: XBRL DOCUMENT
v3.21.1

Other Payables - Summary of Other Payables (Detail) $ in Millions, $ in Millions | Dec. 31, 2020 TWD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 TWD ($)
--- | --- | --- | ---
Trade And Other Current Payables [Abstract] |  |  |
Accrued salary and compensation | $ 9,450 |  | $ 9,482
Payables to contractors | 1,779 |  | 1,892
Accrued compensation to employees and remuneration to directors and supervisors | 1,691 |  | 1,441
Amounts collected for others | 1,308 |  | 1,279
Payable on land (Note 16) | 1,057 |  | 0
Payables to equipment suppliers | 1,049 |  | 296
Accrued maintenance costs | 1,040 |  | 955
Accrued franchise fees | 785 |  | 1,091
Others | 5,829 |  | 6,517
Total | $ 23,988 | $ 854 | $ 22,953

X
- Definition Accrued compensation to employees and remuneration to directors and supervisors. + References No definition available. + Details
Name: | cht_AccruedCompensationToEmployeesAndRemunerationToDirectorsAndSupervisors
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Accrued franchise fees. + References No definition available. + Details
Name: | cht_AccruedFranchiseFees
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Accrued maintenance costs. + References No definition available. + Details
Name: | cht_AccruedMaintenanceCosts
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amounts collected for others. + References No definition available. + Details
Name: | cht_AmountsCollectedForOthers
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current payables for the purchase of equipment. + References No definition available. + Details
Name: | cht_CurrentPayablesForPurchaseOfEquipment
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Miscellaneous other current payables. + References No definition available. + Details
Name: | cht_MiscellaneousOtherCurrentPayables
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payable on land. + References No definition available. + Details
Name: | cht_PayableOnLand
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payables to contractors. + References No definition available. + Details
Name: | cht_PayablesToContractors
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current payables that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherCurrentPayables
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of accruals for employee benefits (other than termination benefits) that are expected to be settled wholly within twelve months after the end of the annual reporting period in which the employees render the related services. [Refer: Accruals classified as current] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ShorttermEmployeeBenefitsAccruals
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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