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Income Taxes (Details 1) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income Tax Disclosure [Abstract]        
Provision for income taxes $ (6.6) $ (2.2) $ 1.0 $ 53.4
Effective tax rate (11.40%) 17.70% (3.20%) 33.10%