XML 158 R142.htm IDEA: XBRL DOCUMENT v3.21.1

Investment Properties - Schedule of Future Aggregate Lease Collection Under Operating Lease for Investment Properties (Detail) - TWD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	$ 434	$ 471
Year 1 [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	115	113
Year 2 [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	95	91
Year 3 [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	75	71
Year 4 [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	53	61
Year 5 [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	38	39
Onwards [Member]
Disclosure Of Maturity Analysis Of Operating Lease Payments [Line Items]
Aggregate lease collection under operating lease	$ 58	$ 96

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

X

- Definition

The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2020-01-01
-Paragraph 97
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_97&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_UndiscountedOperatingLeasePaymentsToBeReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: