Annual report pursuant to Section 13 and 15(d)

Securitizations and Other Variable Interest Entities - Other Asset Backed (Details)

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Securitizations and Other Variable Interest Entities - Other Asset Backed (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2012
Resecuritization Trusts [Member]
Dec. 31, 2011
Resecuritization Trusts [Member]
Dec. 31, 2012
Municipal Bonds [Member]
Dec. 31, 2011
Municipal Bonds [Member]
Dec. 31, 2012
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2012
Automobile Loan [Member]
Dec. 31, 2011
Automobile Loan [Member]
Dec. 31, 2012
Student Loan [Member]
Dec. 31, 2011
Student Loan [Member]
Dec. 31, 2012
Other Loan and Receivable [Member]
Dec. 31, 2011
Other Loan and Receivable [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2012
Automobile Loan [Member]
Variable Interest Entity [Line Items]                                                                                      
Maximum loss exposure                                 $ 20,715,000,000 $ 31,140,000,000         $ 3,341,000,000 $ 3,752,000,000         $ 122,000,000 $ 93,000,000             $ 126,000,000 $ 0 $ 2,505,000,000 $ 3,901,000,000 $ 1,255,000,000 $ 1,087,000,000  
On Balance Sheet Assets [Abstract]                                                                                      
Trading account assets                                     1,281,000,000 [1],[2] 2,595,000,000 [1],[2]         12,000,000 [1],[2] 228,000,000 [1],[2]         37,000,000 [1],[2] 0 [1],[2]         220,000,000 0 2,505,000,000 3,901,000,000 0 0  
Loans and leases 907,819,000,000 926,200,000,000                                                                 123,227,000,000 140,194,000,000 0 0 0 0 2,523,000,000 4,923,000,000  
Allowance for Loan and Lease Losses (24,179,000,000) (33,783,000,000) (41,885,000,000) (47,988,000,000)                                                             (3,658,000,000) (5,066,000,000) 0 0 0 0 (2,000,000) (7,000,000)  
AFS Debt Securities 286,906,000,000 276,151,000,000                                 19,343,000,000 [1],[2] 27,616,000,000 [1],[2] 75,000,000 [1],[2] 544,000,000 [1],[2]     540,000,000 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2]     74,000,000 [1],[2] 81,000,000 [1],[2] 0 [1],[2] 0 [1],[2]                  
Residual interests held                                 16,000,000 [3] 385,000,000 [3]         0 [3] 0 [3]         0 [3] 0 [3]                          
Other Assets 164,605,000,000 145,686,000,000                             0 0         0 0         11,000,000 12,000,000         4,654,000,000 4,769,000,000 0 0 0 0 250,000,000 168,000,000  
Assets 2,209,974,000,000 [4] 2,129,046,000,000 [4]                             20,715,000,000 31,140,000,000         552,000,000 228,000,000         122,000,000 93,000,000         134,431,000,000 151,761,000,000 220,000,000 0 2,505,000,000 3,901,000,000 2,771,000,000 5,084,000,000  
Unconsolidated, Total assets of VIEs                                 42,818,000,000 [5] 60,459,000,000 [5]         4,980,000,000 [5] 5,964,000,000 [5]         1,890,000,000 [5] 668,000,000 [5]                          
On Balance Sheet Liabilities [Abstract]                                                                                      
Commercial paper and other short-term borrowings 30,731,000,000 35,698,000,000                                                                 3,731,000,000 5,777,000,000 0 0 2,859,000,000 5,127,000,000 0 0  
Long-term debt (includes $49,161 and $46,239 measured at fair value) 275,585,000,000 372,265,000,000                                                                 34,256,000,000 49,054,000,000 94,000,000 0 0 0 1,513,000,000 3,992,000,000  
Other Liabilities                                                                     360,000,000 1,116,000,000 0 0 0 0 82,000,000 90,000,000  
Liabilities 1,973,018,000,000 1,898,945,000,000                                                                 38,347,000,000 55,947,000,000 94,000,000 0 2,859,000,000 5,127,000,000 1,595,000,000 4,082,000,000  
In Text Details [Abstract]                                                                                      
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds         45,600,000,000 33,600,000,000                                                                          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale         0 (909,000,000)                                                                         7,000,000
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers             879,000,000 733,000,000                                                                      
Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement             1,400,000,000 2,500,000,000                                                                      
Liquidity Commitments To Unconsolidated Securitization Trusts             2,800,000,000 3,500,000,000                                                                      
Weighted average remaining life of bonds held in the trusts in years 8 years 4 months 24 days                                                                                    
Qualitative and Quantitative Information, Transferor's Continuing Involvement, Principal Amount Outstanding, Continued Recognition, Amount                 $ 4,700,000,000 $ 5,800,000,000 $ 3,500,000,000 $ 3,900,000,000 $ 897,000,000 $ 1,200,000,000 $ 290,000,000 $ 668,000,000                                                     $ 2,400,000,000
[1] The retained senior and subordinate securities were valued using quoted market prices or observable market inputs (Level 2 of the fair value hierarchy).
[2] As a holder of these securities, the Corporation receives scheduled principal and interest payments. During 2012 and 2011, there were no OTTI losses recorded on those securities classified as AFS debt securities.
[3] The retained residual interests are carried at fair value which was derived using model valuations (Level 2 of the fair value hierarchy).
[4] Total assets include long-lived assets, which are primarily located in the U.S.
[5] Total assets include loans the Corporation transferred with which the Corporation has continuing involvement, which may include servicing the loan.