XML 65 R49.htm IDEA: XBRL DOCUMENT
v3.21.1

Other Matters | 12 Months Ended
--- | ---
Dec. 31, 2020
Miscellaneous Assets [Abstract] |
Other Matters |
4 4. | OTHER MATTERS
The Company has assessed the economic impact of COVID-19 and determined that there were no significant impacts on the Company’s financial statements as of the date the consolidated financial statements were authorized for issue. The Company will continue to monitor developments of the pandemic and assess the related impacts.

X
- Definition Disclosure of other matters explanatory. + References No definition available. + Details
Name: | cht_DisclosureOfOtherMattersExplanatory
Namespace Prefix: | cht_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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