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
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
On Balance Sheet Assets [Abstract]      
Derivative assets $ 53,161 $ 53,497  
Other Assets 122,068 150,112  
Total assets 2,126,653 2,209,974 2,166,162
On Balance Sheet Liabilities [Abstract]      
Long-term debt 255,331 275,585  
Total liabilities 1,894,371 1,973,018  
Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,293 3,577  
On Balance Sheet Assets [Abstract]      
Trading account assets 1,570 2,449  
Derivative assets 146 311  
Other Assets 57 76  
Total assets 1,773 2,836  
On Balance Sheet Liabilities [Abstract]      
Long-term debt 1,482 2,808  
Other Liabilities 7 9  
Total liabilities 1,489 2,817  
Total assets of VIEs 21,106 29,186  
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure 1,500    
Consolidated VIEs [Member]
     
On Balance Sheet Assets [Abstract]      
Derivative assets 199 333  
Other Assets 4,314 4,654  
Total assets 122,165 134,431  
On Balance Sheet Liabilities [Abstract]      
Long-term debt 24,481 34,256  
Other Liabilities 382 360  
Total liabilities 27,043 38,347  
Consolidated VIEs [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,274 2,201  
On Balance Sheet Assets [Abstract]      
Trading account assets 1,280 2,191  
Derivative assets 0 10  
Other Assets 0 0  
Total assets 1,280 2,201  
On Balance Sheet Liabilities [Abstract]      
Long-term debt 1,482 2,806  
Other Liabilities 0 0  
Total liabilities 1,482 2,806  
Consolidated, Total assets of VIEs 1,280 2,201  
Unconsolidated VIEs [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,019 1,376  
On Balance Sheet Assets [Abstract]      
Trading account assets 290 258  
Derivative assets 146 301  
Other Assets 57 76  
Total assets 493 635  
On Balance Sheet Liabilities [Abstract]      
Long-term debt 0 2  
Other Liabilities 7 9  
Total liabilities 7 11  
Unconsolidated, Total assets of VIEs 19,826 26,985  
Super Senior Collateralized Debt Obligation [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 135    
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure 87    
Non-Super Senior Collateralized Debt Obligation [Member] | Collateralized Debt Obligations [Member]
     
Variable Interest Entity [Line Items]      
Maximum loss exposure 884    
In Text Details [Abstract]      
Notional Amount Of Liquidity Exposure $ 1,400