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REVENUES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]      
Amount recognized in the period from amounts included in deferred revenue at beginning of period $ 14.1 $ 8.9  
Unbilled receivables $ 1.6   $ 2.1