Inventories - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014
Inventory Disclosure [Abstract]
Percentage of inventories valued by LIFO method	47.00%
Percentage of inventories valued by FIFO method	53.00%
FIFO Inventory Amount	$ 188.1	$ 199.7
Inventory, LIFO Reserve, Period Charge	11.6	$ (0.4)
Inventory Adjustments			$ 18.7
Effect of LIFO Inventory Liquidation on Income	$ 1.7