Write-downs, Reserves, and Project Opening Costs, net of Recoveries Write-downs, Reserves, and Project Opening Costs, net of Recoveries - Additional Information (Details) (Council Bluffs, Iowa [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Council Bluffs, Iowa [Member]
Business exit costs fair value	$ 41.4