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Goodwill and Intangible Assets, Net - Estimated Amortization Expenses of Intangible Assets (Detail)
$ in Millions
Jun. 30, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2016 $ 42.6
2017 35.5
2018 29.2
2019 21.6
2020 19.1
Thereafter $ 47.7