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TRADE AND OTHER RECEIVABLES - Changes in provision of impairment of receivables (Details) - IDR (Rp)
Rp in Billions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Provision of impairment      
Beginning balance Rp (7,363)    
Provision recognized during the year (Note 27) 1,494 Rp 743 Rp 1,010
Ending balance (9,222) (7,363)  
Provision for impairment      
Provision of impairment      
Beginning balance 2,990 3,048  
Provision recognized during the year (Note 27) 1,494 743  
Receivables written off (153) (801)  
Ending balance Rp 4,331 Rp 2,990 Rp 3,048