Supplemental Cash Flow Information (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Interest Paid	$ 34.9	$ 28.2
Income Taxes Paid, Net	2.3	5.7
Capital Expenditures Incurred but Not yet Paid	9.1	16.8
Insurance prepayment financed [Member]
Liabilities Assumed	$ 4.0	$ 4.6