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REVENUE FROM CONTRACTS WITH CUSTOMERS (Unsatisfied Performance Obligations) (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
$ in Millions
Dec. 31, 2019
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 257
Revenue, remaining performance obligation, expected timing of satisfaction, period 5 years