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Income Taxes Current Deferred Tax Assets and Liabilities Recognized in Balance Sheet (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deferred Tax Assets (Liabilities), Net, Current $ 33.5 $ 1.4
Domestic [Member]
   
Deferred Tax Assets (Liabilities), Net, Current 23.0 0
Foreign [Member]
   
Deferred Tax Assets (Liabilities), Net, Current $ 10.5 $ 1.4