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INVENTORIES - (Details)
$ in Millions, Rp in Billions
Dec. 31, 2020
USD ($)
Dec. 31, 2020
IDR (Rp)
Dec. 31, 2019
IDR (Rp)
Dec. 31, 2018
IDR (Rp)
INVENTORIES        
Total current inventories $ 70 Rp 983 Rp 585  
Gross or Cost        
INVENTORIES        
Components   560 351  
SIM cards and blank prepaid vouchers   265 154  
Others (each below Rp75 billion)   226 172  
Total current inventories   1,051 677  
Allowance for expected credit losses        
INVENTORIES        
Components   (37) (62)  
SIM cards and blank prepaid vouchers   (28) (28)  
Others (each below Rp75 billion)   (3) (2)  
Total current inventories   Rp (68) Rp (92) Rp (67)