XML 86 R70.htm IDEA: XBRL DOCUMENT v3.21.1

Long-Term Loans (Tables)

12 Months Ended

Dec. 31, 2020

Long-term loans [Member]

Disclosure of detailed information about borrowings [Line Items]

Summary of Loans

		December 31
		2019				2020
		NT$				NT$
		(In Millions)
Secured bank loans (Note 41)		$	1,600			$	1,600
Less:  Current portion			—				(1,600	)
		$	1,600			$	—

The annual interest rates of bank loans were as follows:

		December 31
		2019			2020
Secured loans		0.92%			0.72%

X

- Definition

The disclosure of detailed information about borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=cht_LongTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: