Other Financial Data Schedule of Other Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Financial Data [Abstract]
Equity earnings	$ 20	$ 13	$ 7
Gains on investments	28	7	18
Gain on disposal of business	10	1	0
Loss on extinguishment of debt	0	0	(19)
Foreign currency remeasurement gains (losses)	13	(19)	30
Derivative (losses) gains	(10)	3	(20)
Other	7	(3)	3
Other income	$ 68	$ 2	$ 19