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SIGNIFICANT ACCOUNTING POLICIES - REVENUE RECOGNITION (Details)
12 Months Ended
Dec. 31, 2019
Bottom of range  
Disclosure of disaggregation of revenue from contracts with customers [line items]  
Typical duration of payments due from customers 30 days
Top of range  
Disclosure of disaggregation of revenue from contracts with customers [line items]  
Typical duration of payments due from customers 40 days