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OPERATION, MAINTENANCE AND TELECOMMUNICATION SERVICE EXPENSES (Details) $ in Millions, Rp in Billions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2019 IDR (Rp) | Dec. 31, 2018 IDR (Rp) | Dec. 31, 2017 IDR (Rp)
OPERATION, MAINTENANCE AND TELECOMMUNICATION SERVICE EXPENSES |  |  |  |
Operation and maintenance |  | Rp 20,153 | Rp 25,215 | Rp 19,929
Radio frequency usage charges (Note 33c.i) |  | 5,736 | 5,473 | 4,276
Leased lines and CPE |  | 4,709 | 5,125 | 5,255
Concession fees and USO charges |  | 2,370 | 2,297 | 2,249
Cost of sales of handset (Note 8) |  | 1,109 | 1,860 | 1,544
Electricity, gas and water |  | 1,102 | 1,051 | 1,037
Cost of SIM cards and vouchers (Note 8) |  | 645 | 866 | 914
Vehicles rental and supporting facilities |  | 386 | 413 | 301
Tower leases |  | 264 | 480 | 472
Insurance |  | 246 | 193 | 294
Other |  | 733 | 920 | 332
Total | $ 2,698 | Rp 37,453 | Rp 43,893 | Rp 36,603

X
- Definition The amount of expense arising from purchased insurance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from transportation services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition The amount of expense arising from concession fees and USO charges. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from cost of handset sold. + References No definition available. + Details
Name: | tlk_CostOfHandsetSold
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from cost of SIM cards and vouchers. + References No definition available. + Details
Name: | tlk_CostOfSimCardsAndVouchers
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from utilizing electricity, gas and water. + References No definition available. + Details
Name: | tlk_ElectricityGasAndWater
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from leased lines and customer premises equipment. + References No definition available. + Details
Name: | tlk_LeasedLinesAndCustomerPremisesEquipment
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of miscellaneous other expenses. + References No definition available. + Details
Name: | tlk_MiscellaneousOtherExpense
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from operation and maintenance. + References No definition available. + Details
Name: | tlk_OperationAndMaintenanceExpenses
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition The amount of expense relating to the Operation, maintenance and telecommunication service expenses. + References No definition available. + Details
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Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount of expense arising from radio frequency usage charges. + References No definition available. + Details
Name: | tlk_RadioFrequencyUsageCharges
Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense arising from tower leases. + References No definition available. + Details
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Namespace Prefix: | tlk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration