Income Taxes Refundable Income Taxes and Income Taxes Payable (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Refundable income taxes	$ 3.4	$ 2.5
Income taxes payable	0.9	6.8
Value added tax payable	$ 34.2	$ 35.8