Finance Assets, Net (Schedule Of Credit Quality Of Investments In Finance Leases) (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Total	$ 3,981	$ 4,704
"AAA/Aaa" To "A-/A3" [Member]
Total	1,699	2,343
"BBB+/Baa1" To "BBB-/Baa3" [Member]
Total	1,140	1,148
"BB+/Ba1" And Lower [Member]
Total	$ 1,142	$ 1,213