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GOODWILL AND OTHER INTANGIBLE ASSETS - Estimated Amortization Expense (Detail)
$ in Millions
Mar. 31, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2021 (remainder) $ 86.7
2022 115.2
2023 111.9
2024 110.4
2025 $ 90.0