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Estimated Annual Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Finite Lived Intangible Assets [Line Items]  
2014 $ 79.0
2015 78.2
2016 59.5
2017 53.0
2018 47.8
2019 and thereafter 176.2
Total $ 493.7