Property, Plant and Equipment Narrative (Details) (USD $) In Millions, unless otherwise specified	10 Months Ended	12 Months Ended			10 Months Ended
	Dec. 31, 2009 years	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009 Leasehold improvements	Mar. 04, 2009 Leasehold improvements
Property, Plant and Equipment [Line Items]
Length Of Lease Agreement In Years	10
Building and land assets and capital lease obligation						$ 154
Refunding revenue bonds issued by MDFB					154
Capital leases included in equipment, excluding the O'Fallon facility		30	23
Accumulated amortization, capital leases		21	10
Depreciation expense including amortization for capital leases		$ 92	$ 84	$ 77