Noninterest Revenue (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Underwriting:
Equity	$ 273	$ 276
Debt	917	823
Total underwriting	1,190	1,099
Advisory	255	282
Total investment banking fees	1,445	1,381
Principal transactions revenue
Trading revenue	4,033	2,359
Private equity gains/(losses)	(272)	363
Principal transactions	3,761	2,722
Gain (Loss) on Fair Value Hedges Recognized in Earnings	403	(408)
Asset management:
Investment management fees	1,703	1,446
All other asset management fees	246	162
Total asset management fees	1,949	1,608
Total administration fees	527	535
Commission and other fees:
Brokerage commissions	580	655
All other commissions and fees	543	594
Total commissions and fees	1,123	1,249
Total asset management, administration and commissions	3,599	3,392
Operating Leases, Income Statement, Lease Revenue	349	323
Interest rate
Principal transactions revenue
Trading revenue	589	1,345
Credit
Principal transactions revenue
Trading revenue	1,145	(984)
Foreign exchange
Principal transactions revenue
Trading revenue	489	548
Equity
Principal transactions revenue
Trading revenue	1,122	823
Commodity
Principal transactions revenue
Trading revenue	688	627
Debit Valuation Adjustment
Principal transactions revenue
Principal transactions	126	(907)
Chief Investment Office \| Credit
Principal transactions revenue
Trading revenue		1,400
Commodity
Principal transactions revenue
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 26	$ (482)

All other asset management fees.

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