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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current:      
Federal $ 2.9 $ 5.4 $ 7.2
Foreign 11.8 13.6 4.0
Total current income tax 14.7 19.0 11.2
Deferred:      
Federal 12.3 (12.8) (9.0)
Foreign (0.1) (2.5) (5.2)
Total Deferred Income Tax 12.2 (15.3) (14.2)
Total $ 26.9 $ 3.7 $ (3.0)