Other Operating Expenses (Details Of Other Operating Expenses) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Expenses [Abstract]
Insurance Commissions	$ 370	$ 382	$ 431
Communications and Information Technology	346	317	342
Professional Fees	176	149	171
Lease and loan administration	173	325	201
Marketing and Advertising Expense	136	145	150
Regulatory and licensing fees	116	118	124
Legal Fees	105	6	2
Mortgage Representation And Warranty, Net	104	171	0
Depreciation, Nonproduction	81	76	70
Vehicle remarketing and repossession	60	52	84
Occupancy, Net	44	50	47
Other Cost and Expense, Operating	270	271	361
Total other operating expenses	1,981	2,062	1,983
CFPB Settlement	$ 98