Supplemental Cash Flow Information (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 112.1	$ 140.2
Income Taxes Paid, Net	8.3	15.3
Capital Expenditures Incurred but Not yet Paid	$ 57.9	$ 55.9