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REVENUES FROM CONTRACTS WITH CUSTOMERS - Narrative (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]          
Contract liability $ 9.5   $ 9.5   $ 12.2
Contract acquisition costs weighted average estimated period     6 years 4 months 24 days    
Amortized deferred sales incentive cost $ 2.7 $ 2.2 $ 7.8 $ 6.5