XML 116 R101.htm IDEA: XBRL DOCUMENT
v3.19.1

Financial Assets at Fair Value through Other Comprehensive Income Noncurrent - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 TWD ($)
Noncurrent Financial Assets At Fair Value Through Other Comprehensive Income [Abstract] |
Dividends received | $ 396

X
- Definition The amount of dividends received. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B12_a&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_DividendsReceived
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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