Quarterly report pursuant to Section 13 or 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 $)
 3 Months Ended 3 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Dec. 31, 2010
Mar. 31, 2012
Resecuritization Trusts [Member]
Mar. 31, 2011
Resecuritization Trusts [Member]
Mar. 31, 2012
Municipal Bonds [Member]
Mar. 31, 2011
Municipal Bonds [Member]
Dec. 31, 2011
Municipal Bonds [Member]
Mar. 31, 2012
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Automobile And Other Securitization Trusts [Member]
Mar. 31, 2012
Automobile Loan [Member]
Dec. 31, 2011
Automobile Loan [Member]
Mar. 31, 2012
Student Loan [Member]
Dec. 31, 2011
Student Loan [Member]
Mar. 31, 2012
Other Loan and Receivable [Member]
Dec. 31, 2011
Other Loan and Receivable [Member]
Mar. 31, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Mar. 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]
Mar. 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]
Mar. 31, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Mar. 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]
Mar. 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]
Mar. 31, 2012
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Mar. 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]
Mar. 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]
Mar. 31, 2012
Consolidated VIEs [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Mar. 31, 2012
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Mar. 31, 2012
Consolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Municipal Bonds [Member]
Mar. 31, 2012
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Variable Interest Entity [Line Items]                                                                                      
Maximum loss exposure                                   $ 26,110,000,000 $ 31,140,000,000         $ 3,611,000,000 $ 3,752,000,000         $ 91,000,000 $ 93,000,000             $ 0 $ 0 $ 3,310,000,000 $ 3,901,000,000 $ 1,075,000,000 $ 1,087,000,000
On Balance Sheet Assets [Abstract]                                                                                      
Trading account assets                                       1,661,000,000 [1],[2] 2,595,000,000 [1],[2] 1,000,000 [1],[2] 0 [1],[2]     208,000,000 [1],[2] 228,000,000 [1],[2] 0 [1],[2] 0 [1],[2]     0 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2]     0 0 3,310,000,000 3,901,000,000 0 0
Loans and leases 902,294,000,000 926,200,000,000                                                                   133,742,000,000 140,194,000,000 0 0 0 0 4,218,000,000 4,923,000,000
Allowance for loan and lease losses (32,211,000,000) (33,783,000,000) (39,843,000,000) (41,885,000,000)                                                               (4,509,000,000) (5,066,000,000) 0 0 0 0 (5,000,000) (7,000,000)
AFS Debt Securities 297,040,000,000 276,151,000,000                                   24,301,000,000 [1],[2] 27,616,000,000 [1],[2] 70,000,000 [1],[2] 544,000,000 [1],[2]     0 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2]     79,000,000 [1],[2] 81,000,000 [1],[2] 0 [1],[2] 0 [1],[2]                
Residual interests held                                   77,000,000 [3] 385,000,000 [3]         0 [3] 0 [3]         0 [3] 0 [3]                        
Other Assets 150,410,000,000 145,686,000,000                               0 0         0 0         12,000,000 12,000,000         3,118,000,000 4,769,000,000 0 0 0 0 175,000,000 168,000,000
Total assets 2,181,449,000,000 2,129,046,000,000 2,274,532,000,000 [4]                             26,110,000,000 31,140,000,000         208,000,000 228,000,000         91,000,000 93,000,000         143,957,000,000 151,761,000,000 0 0 3,310,000,000 3,901,000,000 4,388,000,000 5,084,000,000
Unconsolidated, Total assets of VIEs                                   52,010,000,000 60,459,000,000         5,911,000,000 5,964,000,000         640,000,000 668,000,000                        
On Balance Sheet Liabilities [Abstract]                                                                                      
Commercial paper and other short-term borrowings 39,254,000,000 35,698,000,000                                                                   5,598,000,000 5,777,000,000 0 0 4,873,000,000 5,127,000,000 0 0
Long-term debt 354,912,000,000 372,265,000,000                                                                   44,267,000,000 49,054,000,000 0 0 0 0 3,308,000,000 3,992,000,000
Other Liabilities                                                                       978,000,000 1,116,000,000 0 0 0 0 95,000,000 90,000,000
Total liabilities 1,948,950,000,000 1,898,945,000,000                                                                   50,843,000,000 55,947,000,000 0 0 4,873,000,000 5,127,000,000 3,403,000,000 4,082,000,000
In Text Details [Abstract]                                                                                      
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds         9,900,000,000 2,500,000,000                                                                          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale         0 3,000,000                                                                          
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers             75,000,000 67,000,000                                                                      
Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement                 2,500,000,000                                                                    
Liquidity Commitments To Unconsolidated Securitization Trusts             3,400,000,000   3,500,000,000                                                                    
Weighted average remaining life of bonds held in the trusts in years 8.90                                                                                    
Qualitative and Quantitative Information, Transferor's Continuing Involvement, Principal Amount Outstanding, Continued Recognition, Amount                   $ 5,000,000,000 $ 5,800,000,000 $ 3,300,000,000 $ 3,900,000,000 $ 1,100,000,000 $ 1,200,000,000 $ 640,000,000 $ 668,000,000                                                    
[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 the three months ended March 31, 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] There were no material intersegment revenues.