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Income Taxes (Effective Income Tax Rate Reconciliation) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]        
Income tax benefit computed at U.S. statutory income tax rate (35%) $ 14.4 $ 14.5 $ 11.8 $ (18.6)
Decrease of valuation allowances, net 0 (0.9) (7.0) (132.2)
Foreign income taxed at a lower effective rate (3.1) (26.8) (4.1) (36.9)
Miscellaneous 3.3 (0.4) 5.9 2.5
Income tax expense (benefit) $ 14.6 $ (13.6) $ 6.6 $ (185.2)
Effective tax rate 35.60%   19.60%