Description Of Business, Basis Of Presentation, And Changes In Significant Accounting Policies ResCap Results of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
ResCap Results of Operations [Line Items]
Total net revenue (loss)	$ 1,713	$ 1,161	$ 5,279	$ 4,488
Provision for loan losses	116	50	285	213
Noninterest Expense	1,114	1,217	4,994	4,091
Income (loss) from continuing operations before income tax expense	483	(106)	0	184
Income tax expense (benefit) from continuing operations	93	93	172	106
Net income (loss) from continuing operations	390	(199)	(172)	78
ResCap LLC [Member]
ResCap Results of Operations [Line Items]
Total net revenue (loss)	0	(164)	476	412
Provision for loan losses	0	1	0	8
Noninterest Expense	0	273	437	905
Income (loss) from continuing operations before income tax expense	0	(438)	39	(501)
Income tax expense (benefit) from continuing operations	0	4	7	13
Net income (loss) from continuing operations	$ 0	$ (442)	$ 32	$ (514)