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Income Taxes Schedule of Current and Deferred Income Tax Assets (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]    
Income Taxes Receivable, Current $ 20.9 $ 5.4
Deferred Tax Assets, Gross 64.8 6.6
Deferred Tax Assets, Valuation Allowance 0 6.6
Current and Deferred Income Tax Assets $ 85.7 $ 5.4