Commitments and Contingencies (Contingencies) (Details) (USD $) In Millions, unless otherwise specified			0 Months Ended
	Feb. 14, 2014 MERP Claim Number 1	Sep. 27, 2013 MERP Claim Number 1	Aug. 22, 2014 MERP Claim Number 2A-D Pending Litigation	Aug. 22, 2014 MERP Claim Number 2B Pending Litigation	Aug. 22, 2014 MERP Claim Number 2C Pending Litigation	Aug. 22, 2014 MERP Claim Number 2D Pending Litigation
Loss Contingencies [Line Items]
Loss Contingency, Related Receivable Carrying Value, Current	$ 34	$ 61
Loss Contingency, Damages Sought, Value			$ 77	$ 65	$ 65	$ 3