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GOODWILL AND OTHER INTANGIBLE ASSETS - Estimated Amortization Expense (Detail)
$ in Millions
Jun. 30, 2018
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2018 $ 127.7
2019 127.4
2020 126.7
2021 126.3
2022 $ 125.7