Derivative Instruments And Hedging Activities (Summary Of Gains\(Loss) Amounts Recognized In Income) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Gain/(loss) amounts recognized in income	$ (5)		$ (4)		$ (6)
Foreign Exchange Contract [Member]
Gain/(loss) amounts recognized in income	(6)	[1]	(8)	[1]	(13)	[1]	(11)	[1]
Interest Rate Contract [Member]
Gain/(loss) amounts recognized in income	1	[2]	4	[2]	7	[2]	11	[3]
Call Option [Member]
Gain/(loss) amounts recognized in income	(5)		112		10		99
Bifurcated Conversion Feature [Member]
Gain/(loss) amounts recognized in income	$ 5		$ (112)		$ (10)		$ (99)

[1] Included within operating expenses on the Consolidated Statements of Income.

[2] Included primarily within interest expense on the Consolidated Statements of Income.

[3] Included within interest expense and consumer financing interest expense on the Consolidated Statements of Income.