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REVENUE FROM CONTRACTS WITH CUSTOMERS - Remaining Performance Obligations (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 526.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 338.0
Revenue from Contracts with Customers  
Revenue, remaining performance obligation, period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 130.4
Revenue from Contracts with Customers  
Revenue, remaining performance obligation, period 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 58.2
Revenue from Contracts with Customers  
Revenue, remaining performance obligation, period 12 months