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CONTRACT ASSETS (Details)
$ in Millions, Rp in Billions
Dec. 31, 2019
USD ($)
Dec. 31, 2019
IDR (Rp)
Dec. 31, 2018
IDR (Rp)
CONTRACT ASSETS.      
Contract assets   Rp 1,097 Rp 1,598
Allowance for expected credit losses   (153) (38)
Net   944 1,560
Short term portion $ (45) (629) Rp (1,560)
Long term portion $ 23 Rp 315