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PROPERTY AND EQUIPMENT - Gain on disposal or sale of property and equipment (Details) - IDR (Rp)
Rp in Billions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
PROPERTY AND EQUIPMENT.      
Proceeds from sale of property and equipment Rp 236 Rp 1,496 Rp 629
Net book value (20) (853) (1)
Gain on sale of property and equipment Rp 216 Rp 643 Rp 628