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Income Taxes (Details 1) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income before income taxes      
Domestic $ 56.7 $ 25.0 $ 35.4
Foreign 91.5 72.4 72.5
Income before Income Taxes $ 148.2 $ 97.4 $ 107.9