Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Customer Vehicles (Details)

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Securitizations and Other Variable Interest Entities - Customer Vehicles (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
On Balance Sheet Assets [Abstract]      
Derivative assets $ 52,247 $ 53,497  
Loans and leases 911,592 907,819  
Loans held-for-sale 19,278 19,413  
Other Assets 137,792 150,112  
Total assets 2,174,819 2,209,974 2,181,449
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 47,825 46,016  
Commercial paper and other short-term borrowings 42,148 30,731  
Long-term debt 279,641 275,585  
Total liabilities 1,937,526 1,973,018  
Consolidated VIEs [Member]
      
On Balance Sheet Assets [Abstract]      
Derivative assets 187 333  
Loans and leases 116,236 123,227  
Loans held-for-sale 3,229 1,969  
Other Assets 4,728 4,654  
Total assets 130,183 134,431  
On Balance Sheet Liabilities [Abstract]      
Commercial paper and other short-term borrowings 2,539 3,731  
Long-term debt 31,461 34,256  
Other Liabilities 345 360  
Total liabilities 34,345 38,347  
Customer Vehicles [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 4,738 4,395  
On Balance Sheet Assets [Abstract]      
Trading account assets 2,581 2,980  
Derivative assets 423 516  
Loans and leases 784 523  
Loans held-for-sale 1,003 950  
Other Assets 710 763  
Total assets 5,501 5,732  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 31 33  
Commercial paper and other short-term borrowings 17 131  
Long-term debt 2,729 3,179  
Other Liabilities 385 385  
Total liabilities 3,162 3,728  
Total assets of VIEs 9,051 9,173  
In Text Details [Abstract]      
Liquidity Commitments To Unconsolidated Securitization Trusts 729 742  
Customer Vehicles [Member] | Consolidated VIEs [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 3,442 2,994  
On Balance Sheet Assets [Abstract]      
Trading account assets 2,520 2,882  
Derivative assets 0 0  
Loans and leases 784 523  
Loans held-for-sale 1,003 950  
Other Assets 710 763  
Total assets 5,017 5,118  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 24 26  
Commercial paper and other short-term borrowings 17 131  
Long-term debt 2,729 3,179  
Other Liabilities 2 3  
Total liabilities 2,772 3,339  
Consolidated, Total assets of VIEs 5,017 5,118  
Customer Vehicles [Member] | Unconsolidated VIEs [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,296 1,401  
On Balance Sheet Assets [Abstract]      
Trading account assets 61 98  
Derivative assets 423 516  
Loans and leases 0 0  
Loans held-for-sale 0 0  
Other Assets 0 0  
Total assets 484 614  
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 7 7  
Commercial paper and other short-term borrowings 0 0  
Long-term debt 0 0  
Other Liabilities 383 382  
Total liabilities 390 389  
Unconsolidated, Total assets of VIEs $ 4,034 $ 4,055