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SUPPLEMENTAL CASH FLOW INFORMATION - Changes in liabilities (Details) - IDR (Rp) Rp in Billions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | Rp 44,082 | Rp 35,472
Cash flows | 3,613 | 8,251
Implementation new standard | 15,838 |
Acquisition | 520 | 58
Foreign exchange movement | (68) | 151
New leases | 2,969 | 168
Other changes | 3 | (18)
Balance at end of period | 66,957 | 44,082
Short-term bank loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 4,043 | 2,289
Cash flows | 4,657 | 1,759
Other changes | 5 | (5)
Balance at end of period | 8,705 | 4,043
Two-step loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 949 | 1,098
Cash flows | (198) | (214)
Foreign exchange movement | (15) | 65
Balance at end of period | 736 | 949
Bonds and notes |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 10,481 | 8,982
Cash flows | (526) | 1,498
Other changes | 3 | 1
Balance at end of period | 9,958 | 10,481
Long-term bank loans |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 23,220 | 18,004
Cash flows | 2,917 | 5,088
Acquisition | 520 | 58
Foreign exchange movement | (53) | 86
Other changes | (3) | (16)
Balance at end of period | 26,601 | 23,220
Other borrowings |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 2,244 | 1,295
Cash flows | 1,498 | 947
Other changes | (2) | 2
Balance at end of period | 3,740 | 2,244
Obligations under finance leases |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Balance at beginning of period | 3,145 | 3,804
Cash flows |  | (827)
New leases |  | 168
Other changes | (3,145) |
Balance at end of period |  | Rp 3,145
Lease liabilities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Cash flows | (4,735) |
Implementation new standard | 15,838 |
New leases | 2,969 |
Other changes | 3,145 |
Balance at end of period | Rp 17,217 |

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