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SIGNIFICANT COMMITMENTS AND AGREEMENTS - Borrowings and other credit facilities (Details) - Dec. 31, 2017 $ in Millions, Rp in Billions	USD ($)	IDR (Rp)
Borrowings and other credit facilities
Total facility		Rp 1,500.0
Facility utilized		888.0
BRI
Borrowings and other credit facilities
Total facility		500.0
BRI | Payment guarantee | Telkomsel
Borrowings and other credit facilities
Facility utilized	$ 35.0	472.0
BRI | Performance guarantee | Telkomsel
Borrowings and other credit facilities
Facility utilized	1.5	20.0
BNI
Borrowings and other credit facilities
Total facility		500.0
Facility utilized | $	0.0
BNI | Surety bond | Telkomsel
Borrowings and other credit facilities
Facility utilized		1,030.0
Bank Mandiri
Borrowings and other credit facilities
Total facility		500.0
Facility utilized | $	0.0
SCB | Performance guarantee | Telkomsel
Borrowings and other credit facilities
Facility utilized	1.5	20.0
Rupiah | BRI
Borrowings and other credit facilities
Facility utilized		191.0
Rupiah | BNI
Borrowings and other credit facilities
Facility utilized		305.0
Rupiah | Bank Mandiri
Borrowings and other credit facilities
Facility utilized		390.0
USD | BNI
Borrowings and other credit facilities
Facility utilized | $	1.0
USD | Bank Mandiri
Borrowings and other credit facilities
Facility utilized | $	1.0
Financial guarantee | BRI | Telkomsel
Borrowings and other credit facilities
Total facility		500.0
Financial guarantee | BNI | Telkomsel
Borrowings and other credit facilities
Total facility		2,100.0
Facility utilized		52.2
Financial guarantee | BNI | Sigma
Borrowings and other credit facilities
Total facility	10.0	350.0
Financial guarantee | Bank Mandiri | TII
Borrowings and other credit facilities
Total facility | $	15.0
Financial guarantee | SCB | Telkomsel
Borrowings and other credit facilities
Total facility | $	$ 3.0
Financial guarantee | PT Bank Central Asia Tbk ("BCA") | Telkomsel
Borrowings and other credit facilities
Total facility		Rp 150.0

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The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]]

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The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

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