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PROPERTY AND EQUIPMENT - Cash generating units (Details)
$ in Millions, Rp in Billions
12 Months Ended
Dec. 31, 2020
IDR (Rp)
Dec. 31, 2019
IDR (Rp)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
IDR (Rp)
Dec. 31, 2018
IDR (Rp)
Cash generating units          
Derecognized assets   Rp 153,174 $ 11,326 Rp 159,123 Rp 142,912
Gross or Cost          
Cash generating units          
Derecognized assets   301,290   Rp 318,912 Rp 280,444
Others          
Cash generating units          
Impairment loss Rp 0 Rp 0