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Goodwill and Other Intangible Assets, Net - Estimated Future Amortization Expense of Definite Life Intangible Assets (Detail)
$ in Millions
Dec. 31, 2016
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2017 $ 19.6
2018 14.8
2019 13.3
2020 11.5
2021 10.4
2022 and thereafter 80.2
Total $ 149.8