Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - CDO Vehicle (Details)

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Securitizations and Other Variable Interest Entities - CDO Vehicle (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Summary of Infomration Related to CDO Vehicles [Abstract]    
Derivative contracts $ 28,072 $ 35,013
Other assets 14,707 15,155
Total Assets 599,752 556,463
Derivative contracts 24,259 26,239
Long-term borrowings 96,058 [1] 106,929 [1]
Total Liabilities 549,499 506,495
Collateralized Debt Obligations [Member]
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Maximum loss exposure 4,284 3,880
Notional Amount Of Liquidity Exposure 1,600  
Collateralized Debt Obligations [Member] | Consolidated VIE
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Maximum loss exposure 2,178 1,695
Collateralized Debt Obligations [Member] | Unconsolidated VIEs
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Maximum loss exposure 2,106 2,185
Collateralized Debt Obligations [Member] | Super Senior Collateralized Debt Obligation [Member] | Consolidated VIE
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Notional Amount Of Liquidity Exposure 135  
Collateralized Debt Obligations [Member] | Non-Super Senior Collateralized Debt Obligation [Member] | Unconsolidated VIEs
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Notional Amount Of Liquidity Exposure 1,500  
Collateralized Debt Obligations [Member]
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Derivative contracts 6 11
Long-term borrowings 2,867 2,712
Total Liabilities 2,873 2,723
Collateralized Debt Obligations [Member] | Consolidated VIE
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Derivative contracts 0 0
Long-term borrowings 2,867 2,712
Total Liabilities 2,867 2,712
Collateralized Debt Obligations [Member] | Unconsolidated VIEs
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Derivative contracts 6 11
Long-term borrowings 0 0
Total Liabilities 6 11
Collateralized Debt Obligations [Member]
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Trading assets 2,762 2,241
Derivative contracts 492 678
Other assets 60 72
Total Assets 3,314 2,991
Total assets of VIEs 32,618 34,691
Collateralized Debt Obligations [Member] | Consolidated VIE
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Trading assets 2,178 1,844
Derivative contracts 0 0
Other assets 0 0
Total Assets 2,178 1,844
Total assets of VIEs, consolidated 2,178 1,844
Collateralized Debt Obligations [Member] | Unconsolidated VIEs
    
Summary of Infomration Related to CDO Vehicles [Abstract]    
Trading assets 584 397
Derivative contracts 492 678
Other assets 60 72
Total Assets 1,136 1,147
Total assets of VIEs, unconsolidated $ 30,440 $ 32,847
[1] Excludes junior subordinated notes (related to trust preferred securities).