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SUBSEQUENT EVENTS (Details) Rp in Billions | Mar. 31, 2018 IDR (Rp) shares | Feb. 27, 2018 | Feb. 26, 2018 IDR (Rp) | Feb. 13, 2018 IDR (Rp) | Feb. 09, 2018 USD ($) | Jan. 30, 2018 USD ($) | Jan. 10, 2018 IDR (Rp) | Jan. 04, 2018 IDR (Rp)
--- | --- | --- | --- | --- | --- | --- | --- | ---
Major business combination | Cellum | MetraNet |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  |  |  |  |  | 30.40% |  |
Major business combination | Cellum Tranche One | MetraNet |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Equity issued in an acquisition | $ |  |  |  |  |  | $ 4,000,000 |  |
Major business combination | Cellum Tranche Two | MetraNet |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Equity issued in an acquisition | $ |  |  |  |  |  | $ 2,000,000 |  |
Major business combination | Swadharma |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Percentage of ownership interest acquired | 51.00% |  |  |  |  |  |  |
Cash transferred | Rp 397 |  |  |  |  |  |  |
Major business combination | Swadharma Sarana Informatika Tranche One |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Shares acquired | shares | 14,600 |  |  |  |  |  |  |
Major business combination | Swadharma Sarana Informatika Tranche Two |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Shares acquired | shares | 11,837 |  |  |  |  |  |  |
New Borrowing | BNI - January 4, 2018 |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Nominal amount |  |  |  |  |  |  |  | Rp 68
New Borrowing | Bank Mandiri - February 13, 2018 |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Nominal amount |  |  |  | Rp 150 |  |  |  |
New Borrowing | The Bank Of Tokyo - Mitsubishi UFJ Ltd - February 9, 2018 |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Nominal amount | $ |  |  |  |  | $ 10,000,000 |  |  |
New Borrowing | Deutsche Bank - January 10, 2018 |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Nominal amount |  |  |  |  |  |  | Rp 750 |
New Borrowing | BNI - February 26, 2018 |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Nominal amount |  |  | Rp 825 |  |  |  |  |
New Approval For Foreign Ownership | TSGN | Maximum |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |
Foreign ownership allowed |  | 70.00% |  |  |  |  |  |

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