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REVENUE FROM CONTRACTS WITH CUSTOMERS - Remaining Performance Obligations (Details)
$ in Millions
Sep. 30, 2020
USD ($)
Revenue from Contract with Customer [Abstract]  
Amount of remaining performance obligation $ 670.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01  
Revenue from Contract with Customer [Abstract]  
Amount of remaining performance obligation $ 446.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Expected timing of satisfaction for remaining performance obligation 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Revenue from Contract with Customer [Abstract]  
Amount of remaining performance obligation $ 223.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Expected timing of satisfaction for remaining performance obligation 12 months