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 $)
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
On Balance Sheet Assets [Abstract]      
Derivative assets $ 59,939,000,000 $ 73,023,000,000  
AFS Debt Securities 300,049,000,000 276,151,000,000  
Other Assets 146,172,000,000 145,686,000,000  
Total assets 2,160,854,000,000 2,129,046,000,000 2,261,319,000,000
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 51,515,000,000 59,520,000,000  
Long-term debt 301,848,000,000 372,265,000,000  
Total liabilities 1,924,879,000,000 1,898,945,000,000  
Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 4,369,000,000 3,967,000,000  
On Balance Sheet Assets [Abstract]      
Trading account assets 2,600,000,000 1,853,000,000  
Derivative assets 714,000,000 1,130,000,000  
Other Assets 83,000,000 96,000,000  
Total assets 3,397,000,000 3,079,000,000  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 6,000,000 11,000,000  
Long-term debt 2,869,000,000 2,714,000,000  
Total liabilities 2,875,000,000 2,725,000,000  
Total assets of VIEs 32,682,000,000 34,747,000,000  
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure 1,700,000,000    
Consolidated VIEs [Member]
     
On Balance Sheet Assets [Abstract]      
Derivative assets 1,007,000,000 1,634,000,000  
Other Assets 4,113,000,000 4,769,000,000  
Total assets 140,094,000,000 151,761,000,000  
On Balance Sheet Liabilities [Abstract]      
Long-term debt 38,456,000,000 49,054,000,000  
Total liabilities 44,066,000,000 55,947,000,000  
Consolidated VIEs [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,178,000,000 1,695,000,000  
On Balance Sheet Assets [Abstract]      
Trading account assets 1,964,000,000 1,392,000,000  
Derivative assets 214,000,000 452,000,000  
Other Assets 0 0  
Total assets 2,178,000,000 1,844,000,000  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 0 0  
Long-term debt 2,867,000,000 2,712,000,000  
Total liabilities 2,867,000,000 2,712,000,000  
Consolidated, Total assets of VIEs 2,178,000,000 1,844,000,000  
Unconsolidated VIEs [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,191,000,000 2,272,000,000  
On Balance Sheet Assets [Abstract]      
Trading account assets 636,000,000 461,000,000  
Derivative assets 500,000,000 678,000,000  
Other Assets 83,000,000 96,000,000  
Total assets 1,219,000,000 1,235,000,000  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 6,000,000 11,000,000  
Long-term debt 2,000,000 2,000,000  
Total liabilities 8,000,000 13,000,000  
Unconsolidated, Total assets of VIEs 30,504,000,000 32,903,000,000  
Super Senior Collateralized Debt Obligation [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 209,000,000    
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure 135,000,000    
Collateralized Debt Obligation Financing Facilities [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,200,000,000    
In Text Details [Abstract]      
C D O Financing Facilities Long Term Debt 2,900,000,000    
Non-Super Senior Collateralized Debt Obligation [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,000,000,000    
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure $ 1,600,000,000