Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flow Provided by (Used in) Operations Due to Changes in Operating Assets and Liabilities
Receivables, Net	$ (1.5)	$ (25.5)	$ 49.3
Inventories, Net	(19.7)	(50.4)	(39.5)
Prepaid Expenses	0.1	4.8	(11.4)
Other Assets	(12.4)	9.2	(3.8)
Accounts Payable	12.7	13.3	(13.9)
Compensation and Employee Benefits	(1.9)	9.6	(20.8)
Income Taxes	0.9	9.0	1.1
Interest Payable	(1.1)	(7.4)	21.9
Other Accrued Liabilities	(3.9)	(6.3)	(1.1)
Other Noncurrent Liabilities	7.8	3.5	(4.1)
Total	(19.0)	(40.2)	(22.3)
Cash paid for interest and cash paid, net of refunds, for income taxes
Interest	60.9	79.1	89.6
Income Taxes	$ 11.2	$ 12.2	$ 12.1