Debt (Gain Or Loss On The Hedged Item And Offsetting Gain Or Loss On Interest Rate Swaps) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Other Operating expenses	$ (745)	$ (732)	$ (1,461)	$ (1,460)
Other operating expenses net income effect			0	0
Loss On Swaps [Member]
Other Operating expenses			(1)	0
Gain On Notes [Member]
Other Operating expenses			$ 1	$ 0