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OTHER - Backlog (Details)
$ in Billions
Jun. 30, 2019
USD ($)
Accounting Policies [Abstract]  
Remaining performance obligation $ 136.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, percentage 38.00%
Expected time of satisfaction 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, percentage 27.00%
Expected time of satisfaction 12 months