Derivatives Derivatives (Details 4-Non Hedges Commodity) (Details) (Commodity [Member], Sales and Other Operating Revenues [Member], Not Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commodity [Member] | Sales and Other Operating Revenues [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ (67)	$ (70)	$ (5)