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Estimated Annual Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Finite Lived Intangible Assets [Line Items]  
2013 $ 64.2
2014 63.2
2015 57.5
2016 39.1
2017 32.7
2018 and thereafter 107.2
Total $ 363.9