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REVENUES - Narrative (Details) - IDR (Rp)
Rp in Billions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenues    
Rental income Rp 3,300 Rp 2,487
Minimum    
Revenues    
Lease term 1 year  
Maximum    
Revenues    
Lease term 10 years  
Less than one year    
Revenues    
Unsatisfied performance obligations Rp 6,391  
More than one year    
Revenues    
Unsatisfied performance obligations Rp 4,409