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Income Taxes - Schedule of Components of Income before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Domestic $ 688.1 $ 827.6 $ 784.1
International 286.5 263.0 229.5
Total $ 974.6 $ 1,090.6 $ 1,013.6