Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Inventory Disclosures [Line Items]
Consignment inventory	$ 18.6	$ 26.4
Venezuela [Member]
Inventory Disclosures [Line Items]
Inventory, lower of cost or market charges recognized	$ 9.5
United States and Canada [Member]
Inventory Disclosures [Line Items]
Consignment inventory, percentage	80.00%