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Income Taxes - Sources of Income Before Income Taxes (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Domestic $ 10.0 $ 5.6 $ (42.6)
Foreign 82.8 87.7 92.8
Income before income taxes $ 92.8 $ 93.3 $ 50.2