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
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
On Balance Sheet Assets [Abstract]      
Derivative assets $ 56,772 $ 53,497  
Loans and leases 921,570 907,819  
Loans held-for-sale 14,549 19,413  
Other Assets 127,880 150,112  
Total assets 2,123,320 2,209,974 2,160,854
On Balance Sheet Liabilities [Abstract]      
Derivative Liabilities 48,532 46,016  
Commercial paper and other short-term borrowings 46,470 30,731  
Long-term debt 262,480 275,585  
Total liabilities 1,892,288 1,973,018  
Consolidated VIEs [Member]
      
On Balance Sheet Assets [Abstract]      
Derivative assets 173 333  
Loans and leases 113,045 123,227  
Loans held-for-sale 1,876 1,969  
Other Assets 3,927 4,654  
Total assets 122,371 134,431  
On Balance Sheet Liabilities [Abstract]      
Commercial paper and other short-term borrowings 1,421 3,731  
Long-term debt 25,946 34,256  
Other Liabilities 390 360  
Total liabilities 27,757 38,347  
Customer Vehicles [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 4,733 4,395  
On Balance Sheet Assets [Abstract]      
Trading account assets 2,596 2,980  
Derivative assets 286 516  
Loans and leases 831 523  
Loans held-for-sale 1,047 950  
Other Assets 745 763  
Total assets 5,505 5,732  
On Balance Sheet Liabilities [Abstract]      
Commercial paper and other short-term borrowings 81 131  
Long-term debt 2,641 3,179  
Other Liabilities 459 418  
Total liabilities 3,181 3,728  
Total assets of VIEs 9,026 9,173  
In Text Details [Abstract]      
Liquidity Commitments To Unconsolidated Securitization Trusts 725 742  
Customer Vehicles [Member] | Consolidated VIEs [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 3,568 2,994  
On Balance Sheet Assets [Abstract]      
Trading account assets 2,546 2,882  
Derivative assets 0 0  
Loans and leases 831 523  
Loans held-for-sale 1,047 950  
Other Assets 745 763  
Total assets 5,169 5,118  
On Balance Sheet Liabilities [Abstract]      
Commercial paper and other short-term borrowings 81 131  
Long-term debt 2,641 3,179  
Other Liabilities 56 29  
Total liabilities 2,778 3,339  
Consolidated, Total assets of VIEs 5,169 5,118  
Customer Vehicles [Member] | Unconsolidated VIEs [Member]
      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,165 1,401  
On Balance Sheet Assets [Abstract]      
Trading account assets 50 98  
Derivative assets 286 516  
Loans and leases 0 0  
Loans held-for-sale 0 0  
Other Assets 0 0  
Total assets 336 614  
On Balance Sheet Liabilities [Abstract]      
Commercial paper and other short-term borrowings 0 0  
Long-term debt 0 0  
Other Liabilities 403 389  
Total liabilities 403 389  
Unconsolidated, Total assets of VIEs $ 3,857 $ 4,055