XML 138 R124.htm IDEA: XBRL DOCUMENT v3.8.0.1

Investment Properties - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 TWD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 TWD ($)	Dec. 31, 2015 TWD ($)
Disclosure Of Investment Property [Abstract]
Reversal of impairment loss	$ 11	$ 0	$ 148	$ 142

X

- References

No definition available.

+ Details

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

X

- Definition

The amount of reversal of impairment loss recognised in profit or loss for investment property. [Refer: Reversal of impairment loss recognised in profit or loss; Investment property]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2016-01-13
-Paragraph 76
-Subparagraph g
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2016-03-30&anchor=para_76_g&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 40
-IssueDate 2016-01-13
-Paragraph 79
-Subparagraph d
-Clause v
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2016-03-30&anchor=para_79_d_v&doctype=Standard
-URIDate 2016-03-31

+ Details

Name:	ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossInvestmentProperty
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration