LONG-TERM LOANS AND OTHER BORROWINGS - Other borrowings agreements (Details) Rp in Billions	12 Months Ended
Dec. 31, 2018 IDR (Rp)
PT Sarana Multi Infrastruktur \| Dayamitra
Borrowings and other credit facilities
Maximum debt to equity ratio	5
Net debt to EBITDA ratio	4.00%
Minimum debt service coverage	100.00%
Sarana Multi Infrastruktur October 12 2016 \| Rupiah \| Dayamitra
Borrowings and other credit facilities
Total facility	Rp 700
Current period payment	50
Sarana Multi Infrastruktur March 29 2017 \| Rupiah \| Dayamitra
Borrowings and other credit facilities
Total facility	Rp 600
The company \| Sarana Multi Infrastruktur November 14 2018
Borrowings and other credit facilities
Maximum debt to equity ratio	2
Net debt to EBITDA ratio	4.00%
Minimum debt service coverage	125.00%
The company \| Sarana Multi Infrastruktur November 14 2018 \| Rupiah
Borrowings and other credit facilities
Total facility	Rp 1,000
Repayment of Interest, Semi Annually \| Sarana Multi Infrastruktur October 12 2016 \| Rupiah \| Dayamitra
Borrowings and other credit facilities
Interest rate basis	3 months JIBOR
Interest rate adjustment (as a percent)	1.85%
Repayment of Interest, Semi Annually \| Sarana Multi Infrastruktur March 29 2017 \| Rupiah \| Dayamitra
Borrowings and other credit facilities
Interest rate basis	3 months JIBOR
Interest rate adjustment (as a percent)	1.85%
Repayment of Interest, Semi Annually \| The company \| Sarana Multi Infrastruktur November 14 2018 \| Rupiah
Borrowings and other credit facilities
Interest rate (as a percent)	8.35%

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard
-URIDate 2018-03-16

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The ratio of net operating income to total debt service, which is necessary to be maintained under the terms of debt instrument.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of the total principal payments made during the annual reporting period.

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