Impairment and Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Impairment and Restructuring Charges
Property, plant and equipment	$ 13.9	$ 17.7	$ 13.9	$ 17.7
Goodwill	1.4		1.4
Intangible assets, net	36.4	35.6	36.4	35.6
Total impairment charges	51.7	53.3	51.7	53.3
Total impairment and restructuring charges	67.3	55.5	67.3	56.3
Cost of sales
Impairment and Restructuring Charges
Restructuring	11.7	1.6	11.7	1.6
Warehouse, delivery, selling, general and administrative expense
Impairment and Restructuring Charges
Restructuring	2.9	$ 0.6	2.9	1.0
Depreciation expense
Impairment and Restructuring Charges
Restructuring				$ 0.4
Non-operating expense
Impairment and Restructuring Charges
Restructuring	$ 1.0		$ 1.0