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REVENUE AND CONTRACT ACQUISITION COSTS - Sales-type and Operating Lease Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Deferred Revenue Arrangement [Line Items]        
Sales-type lease revenue $ 50.1 $ 84.0 $ 85.7 $ 101.3
Operating lease revenue 93.0 67.3 176.2 126.3
Variable Lease Revenue, Usage-Based Arrangements        
Deferred Revenue Arrangement [Line Items]        
Operating lease revenue $ 33.6 $ 21.0 $ 58.5 $ 34.5