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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial instruments (Details) | 12 Months Ended
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Dec. 31, 2021 item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Number of stages for recognition of expected credit losses | 2
Period to trigger provision | 12 months
Past due period for significant increased risk | 30 days
Past due period for default | 90 days

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

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- Definition The past due period to qualify as significant increased risk for debt instruments measured at fair value through other comprehensive income. + References No definition available. + Details
Name: | tlk_DebtInstrumentsAtFairValueThroughOtherComprehensiveIncomePastDuePeriodToQualifyAsSignificantIncreasedRisk
Namespace Prefix: | tlk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The period of possible default to trigger provision for expected credit losses without significant increase in risk. + References No definition available. + Details
Name: | tlk_ExpectedCreditLossesWithoutSignificantIncreaseInRiskPeriodOfPossibleDefaultToTriggerProvision
Namespace Prefix: | tlk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The past due period to determine default for financial assets. + References No definition available. + Details
Name: | tlk_FinancialAssetPastDuePeriodToDetermineDefault
Namespace Prefix: | tlk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of stages in which the entity recognizes expected credit losses. + References No definition available. + Details
Name: | tlk_NumberOfStagesForRecognitionOfExpectedCreditLosses
Namespace Prefix: | tlk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration