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Goodwill and Other Intangible Assets, Net - Estimated Future Amortization Expense of Definite Life Intangible Assets (Detail)
$ in Millions
Mar. 31, 2017
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2017 $ 22.5
2018 24.7
2019 23.2
2020 19.9
2021 18.6
2022 and thereafter 128.4
Total $ 237.3