Supplemental Cash Flow Information (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest Paid	$ 12.9	$ 13.3
Income Taxes Paid, Net	1.2	1.1
Capital Expenditures Incurred but Not yet Paid	$ 13.9	$ 7.3