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Goodwill and Other Intangible Assets, Net - Estimated Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
2014 $ 11.8
2015 10.0
2016 9.5
2017 8.7
2018 $ 7.3