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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, 2019 USD ($) | Dec. 31, 2019 IDR (Rp) | Dec. 31, 2018 IDR (Rp) | Dec. 31, 2017 IDR (Rp) | Dec. 31, 2016 IDR (Rp)
Income Tax Disclosure [Line Items] |  |  |  |  |
Profit before income tax | $ 2,759 | Rp 38,299 | Rp 36,077 | Rp 42,628 |
Less: consolidated income subject to final tax - net |  | (1,141) | (1,277) | (1,491) |
Net |  | 37,158 | 34,800 | 41,137 |
Income tax expense calculated at the Company’s applicable statutory tax rate of 20% |  | 7,432 | 6,960 | 8,228 |
Difference in applicable statutory tax rate for subsidiaries |  | 1,531 | 1,753 | 2,046 |
Non-deductible expenses |  | 827 | 423 | 767 |
Final income tax expense |  | 73 | 60 | 591 |
Unrecognized deferred tax |  | 323 | (2) | 4 |
Deferred tax assets on fixed assets revaluation for tax purpose |  |  |  | (1,796) | Rp (1,415)
Others |  | 253 | 172 | 118 |
Net Income Tax Expense | $ 752 | Rp 10,439 | Rp 9,366 | Rp 9,958 |
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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