Income Taxes (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Provision for Income Taxes, Equity Method Investment	$ 5.7	$ (0.5)	$ 18.3
Equity Method Investment, Summarized Financial Information, Income Tax	7.8	15.4
Income before income taxes
Domestic	211.0	174.7	137.9
Foreign	94.4	95.6	93.3
Income before Income Taxes and Share of Affiliates’ Earnings	$ 305.4	$ 270.3	$ 231.2