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 $)
6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Jun. 30, 2012
Resecuritization Trusts [Member]
Jun. 30, 2011
Resecuritization Trusts [Member]
Jun. 30, 2012
Resecuritization Trusts [Member]
Jun. 30, 2011
Resecuritization Trusts [Member]
Jun. 30, 2012
Municipal Bonds [Member]
Jun. 30, 2011
Municipal Bonds [Member]
Jun. 30, 2012
Municipal Bonds [Member]
Jun. 30, 2011
Municipal Bonds [Member]
Dec. 31, 2011
Municipal Bonds [Member]
Jun. 30, 2012
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Automobile And Other Securitization Trusts [Member]
Jun. 30, 2012
Automobile Loan [Member]
Dec. 31, 2011
Automobile Loan [Member]
Jun. 30, 2012
Student Loan [Member]
Dec. 31, 2011
Student Loan [Member]
Jun. 30, 2012
Other Loan and Receivable [Member]
Dec. 31, 2011
Other Loan and Receivable [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Jun. 30, 2012
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Jun. 30, 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]
Jun. 30, 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]
Jun. 30, 2012
Consolidated VIEs [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Jun. 30, 2012
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Jun. 30, 2012
Consolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Municipal Bonds [Member]
Jun. 30, 2012
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2011
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Jun. 30, 2012
Automobile Loan [Member]
Dec. 31, 2011
Automobile Loan [Member]
Variable Interest Entity [Line Items]                                                                                                      
Maximum loss exposure                                               $ 22,957,000,000 $ 31,140,000,000         $ 3,410,000,000 $ 3,752,000,000         $ 90,000,000 $ 93,000,000             $ 0 $ 0 $ 2,743,000,000 $ 3,901,000,000 $ 1,282,000,000 $ 1,087,000,000    
On Balance Sheet Assets [Abstract]                                                                                                      
Trading account assets                                                   895,000,000 [1],[2] 2,595,000,000 [1],[2]         135,000,000 [1],[2] 228,000,000 [1],[2]         0 [1],[2] 0 [1],[2]         0 0 2,743,000,000 3,901,000,000 0 0    
Loans and leases 892,315,000,000   926,200,000,000                                                                             128,386,000,000 140,194,000,000 0 0 0 0 3,595,000,000 4,923,000,000    
Allowance for loan and lease losses (30,288,000,000) (32,211,000,000) (33,783,000,000) (37,312,000,000) (39,843,000,000) (41,885,000,000)                                                                       (4,074,000,000) (5,066,000,000) 0 0 0 0 (3,000,000) (7,000,000)    
AFS Debt Securities 300,049,000,000   276,151,000,000                                             21,892,000,000 [1],[2] 27,616,000,000 [1],[2] 76,000,000 [1],[2] 544,000,000 [1],[2]     0 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2]     78,000,000 [1],[2] 81,000,000 [1],[2] 0 [1],[2] 0 [1],[2]                    
Residual interests held                                               94,000,000 [3] 385,000,000 [3]         0 [3] 0 [3]         0 [3] 0 [3]                            
Other Assets 146,172,000,000   145,686,000,000                                         0 0         0 0         12,000,000 12,000,000         4,113,000,000 4,769,000,000 0 0 0 0 314,000,000 168,000,000    
Total assets 2,160,854,000,000   2,129,046,000,000 2,261,319,000,000                                       22,957,000,000 31,140,000,000         135,000,000 228,000,000         90,000,000 93,000,000         140,094,000,000 151,761,000,000 0 0 2,743,000,000 3,901,000,000 3,906,000,000 5,084,000,000    
Unconsolidated, Total assets of VIEs                                               43,919,000,000 [4] 60,459,000,000 [4]         5,307,000,000 [4] 5,964,000,000 [4]         2,358,000,000 [4] 668,000,000 [4]                            
On Balance Sheet Liabilities [Abstract]                                                                                                      
Commercial paper and other short-term borrowings 39,019,000,000   35,698,000,000                                                                             4,449,000,000 5,777,000,000 0 0 3,041,000,000 5,127,000,000 0 0    
Long-term debt 301,848,000,000   372,265,000,000                                                                             38,456,000,000 49,054,000,000 0 0 0 0 2,620,000,000 3,992,000,000    
Other Liabilities                                                                                   1,161,000,000 1,116,000,000 0 0 0 0 104,000,000 90,000,000    
Total liabilities 1,924,879,000,000   1,898,945,000,000                                                                             44,066,000,000 55,947,000,000 0 0 3,041,000,000 5,127,000,000 2,724,000,000 4,082,000,000    
In Text Details [Abstract]                                                                                                      
Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds, in Period             14,300,000,000 21,600,000,000 24,300,000,000 24,100,000,000                                                                                  
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale               732,000,000 0 735,000,000                                                                               7,000,000  
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers                     124,000,000 348,000,000 199,000,000 415,000,000                                                                          
Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement                     2,100,000,000   2,100,000,000   2,500,000,000                                                                        
Liquidity Commitments To Unconsolidated Securitization Trusts                     3,300,000,000   3,300,000,000   3,500,000,000                                                                        
Weighted average remaining life of bonds held in the trusts in years 8 years 10 months 24 days                                                                                                    
Qualitative and Quantitative Information, Transferor's Continuing Involvement, Principal Amount Outstanding, Continued Recognition, Amount                               $ 6,200,000,000 $ 5,800,000,000 $ 4,900,000,000 $ 3,900,000,000 $ 1,000,000,000 $ 1,200,000,000 $ 313,000,000 $ 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 the three and six months ended June 30, 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 loans the Corporation transferred with which the Corporation has continuing involvement, which may include servicing the loan.