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TAXATION - Reconciliation of income tax expense (Details) $ in Millions, Rp in Billions | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2017 IDR (Rp) | Dec. 31, 2016 IDR (Rp) | Dec. 31, 2015 IDR (Rp)
Income Tax Disclosure [Line Items] |  |  |  |
PROFIT BEFORE INCOME TAX | $ 3,144 | Rp 42,628 | Rp 38,166 | Rp 31,293
Less: income subject to final tax - net |  | (1,491) | (1,684) | (1,531)
Net |  | 41,137 | 36,482 | 29,762
Income tax expense calculated at the Company’s applicable statutory tax rate of 20% |  | 8,228 | 7,296 | 5,952
Difference in applicable statutory tax rate for subsidiaries |  | 2,046 | 1,904 | 1,509
Non-deductible expenses |  | 767 | 496 | 332
Final income tax expense |  | 591 | 345 | 111
Deferred tax assets that cannot be utilized-net |  | 4 | 56 |
Deferred tax assets on fixed assets revaluation for tax purpose |  | (1,796) | (1,415) |
Others |  | 118 | 335 | 119
Net Income Tax Expense | $ 734 | Rp 9,958 | Rp 9,017 | Rp 8,023
The company |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Applicable tax rate | 20.00% | 20.00% | 20.00% | 20.00%
Subsidiaries |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Applicable tax rate | 25.00% | 25.00% | 25.00% | 25.00%

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