XML 144 R107.htm IDEA: XBRL DOCUMENT
v3.20.1

Other Current Monetary Assets - Summary of Other Current Monetary Assets (Detail) $ in Millions, $ in Millions | Dec. 31, 2019 TWD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 TWD ($)
--- | --- | --- | ---
Disclosure Of Other Current Monetary Assets [Abstract] |  |  |
Time deposits and negotiable certificates of deposit with maturities of more than three months | $ 5,959 |  | $ 8,157
Repurchase agreements collateralized by bonds with maturities of more than three months | 15 |  | 0
Others | 1,524 |  | 1,347
Other current monetary assets | $ 7,498 | $ 251 | $ 9,504

X
- Definition Disclosure of other current monetary assets. + References No definition available. + Details
Name: | cht_DisclosureOfOtherCurrentMonetaryAssetsAbstract
Namespace Prefix: | cht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Miscellaneous other current monetary assets. + References No definition available. + Details
Name: | cht_MiscellaneousOtherCurrentMonetaryAssets
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Repurchase agreements collateralized by bonds with maturities. + References No definition available. + Details
Name: | cht_RepurchaseAgreementsCollateralizedByBondsWithMaturities
Namespace Prefix: | cht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_d&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_OtherCurrentFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant