Goodwill and Other Intangible Assets - Mortgage Fees and Related Income (Details 4) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Risk management:
Derivative valuation adjustments and other	$ 4,600		$ 5,100
All other	0	2	5	7
Mortgage fees and related income	1,380	707	1,996	2,253
Retail Financial Services
Net production revenue:
Production revenue	1,090	1,233	2,536	2,342
Repurchase Losses	(314)	(1,464)	(957)	(2,563)
Net production revenue	776	(231)	1,579	(221)
Operating revenue:
Loan servicing revenue	1,039	1,153	3,102	3,446
Changes in MSR asset fair value due to modeled servicing portfolio runoff	(457)	(604)	(1,498)	(1,829)
Total operating revenue	582	549	1,604	1,617
Risk management:
Changes in MSR asset fair value due to market interest rates	(4,574)	(1,398)	(5,127)	(4,997)
Other changes in MSR asset fair value due to inputs or assumptions in model	0	(99)	(1,158)	(180)
Derivative valuation adjustments and other	4,596	1,884	5,093	6,027
Total risk management	22	387	(1,192)	850
Total RFS net mortgage servicing revenue	$ 604	$ 936	$ 412	$ 2,467