Financing Receivables (Schedule Of Lease Receivables, Net Of Nonrecourse Debt, Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating) (Detail) (Energy Holdings [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Lease Receivables (net of Non-Recourse Debt)	$ 700	$ 701
Standard & Poor's, AA Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	19	19
Standard & Poor's, AA- Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	56	56
Standard & Poor's, BBB plus - BB plus Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	316	316
Standard & Poor's, B Rating [Member]
Lease Receivables (net of Non-Recourse Debt)	165	166
Standard Poors Not Rated [Member]
Lease Receivables (net of Non-Recourse Debt)	$ 144	$ 144