Financing Receivables (Schedule Of Counterparties' Credit Rating) (Details) (Energy Holdings [Member], USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Lease Receivables (net of Non-Recourse Debt)	$ 885	$ 896
Standard & Poor's Not Rated [Member]
Lease Receivables (net of Non-Recourse Debt)	17	17
Standard & Poor's, CC Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	121	0
Standard & Poor's, B Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	300	430
Standard & Poor's, BBB-BB Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	316	316
Standard & Poor's, A Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	110	112
Standard & Poor's, AAA-AA Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	$ 21	$ 21