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GOODWILL AND INTANGIBLE ASSETS, NET - Estimated Future Amortization Expense (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
2021 $ 25.0  
2022 30.5  
2023 28.3  
2024 26.0  
2025 24.8  
Thereafter 171.5  
Net Carrying Amount $ 306.1 $ 314.9