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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, 2019
Dec. 31, 2018
Dec. 31, 2017
PROPERTY AND EQUIPMENT.      
Proceeds from sale of property and equipment Rp 1,496 Rp 629 Rp 1,367
Net book value (853) (1) (1,009)
Gain on sale of property and equipment Rp 643 Rp 628 Rp 358