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REVENUES FROM CONTRACTS WITH CUSTOMERS - Narrative, Revenue Remaining Performance Obligation (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
Sep. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Expected performance obligation through 2020, percentage 42.00%
Performance obligations expected to be satisfied, expected timing 15 months