XML 153 R139.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Bonds Payable - Summary of Bonds Payable (Detail) - TWD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Detailed Information About Bonds Payable [Abstract]
Unsecured domestic bonds	$ 30,500	$ 30,500
Less: Discounts on bonds payable	(17)	(23)
Bonds payable	$ 30,483	$ 30,477

X

- Definition

Disclosure of detailed information about bonds payable.

+ References

No definition available.

+ Details

Name:	cht_DisclosureOfDetailedInformationAboutBondsPayableAbstract
Namespace Prefix:	cht_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Discounts on bonds payable.

+ References

No definition available.

+ Details

Name:	cht_DiscountsOnBondsPayable
Namespace Prefix:	cht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Unsecured domestic bonds.

+ References

No definition available.

+ Details

Name:	cht_UnsecuredDomesticBonds
Namespace Prefix:	cht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of bonds issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_BondsIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant