Finance Receivables And Loans, Net (Schedule Of Sales Of Financing Receivables And Loans) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales	$ 2	$ 10	$ 47	$ 2,010
Consumer Loans Auto Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales	0	0	0	1,960
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales	0	0	0	40
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales	$ 2	$ 10	$ 47	$ 10