Other Income, Net Of Losses (Schedule of Other Income, Net Of Losses) (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
Other Nonoperating Income (Expense) [Abstract]
Fees and Commissions, Other	$ 25	$ 24	$ 71	$ 66
Unrealized Gain (Loss) on Derivatives	21	(2)	31	(36)
Remarketing Fees	20	15	59	47
Fees and Commissions, Mortgage Banking	0	105	81	335
Other Income	27	27	82	111
Other income, net of losses	$ 93	$ 169	$ 324	$ 523