Income Taxes (Textuals) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Accrued liabilities for interest and penalties	$ 0.1	$ 0.3
Total gross unrecognized tax benefits	6.2	$ 5.9	$ 6.9
Unrecognized tax benefits that would Impact effective tax rate	1.4
Estimated reduction in the liability for unrecognized tax benefits	0.7
Undistributed earnings of foreign subsidiaries	$ 612.3