Other Income, Net Of Losses (Other Income, Net Of Losses) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Nonoperating Income (Expense) [Abstract]
Remarketing Fees	$ 112	$ 82	$ 63
Fees and Commissions, Other	88	94	83
Other Securitization Income Loss	13	23	45
Fees and Commissions, Mortgage Banking	0	81	475
Unrealized Gain (Loss) on Derivatives	(31)	24	(30)
Other Income	98	79	101
Other income, net of losses	$ 280	$ 383	$ 737