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, 2014
Dec. 31, 2013
Jun. 30, 2013
Jun. 30, 2014
Resecuritization Trusts [Member]
Jun. 30, 2014
Resecuritization Trusts [Member]
Jun. 30, 2014
Municipal Bonds [Member]
Dec. 31, 2013
Municipal Bonds [Member]
Jun. 30, 2014
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2013
Automobile And Other Securitization Trusts [Member]
Jun. 30, 2014
Automobile Loan [Member]
Dec. 31, 2013
Automobile Loan [Member]
Jun. 30, 2014
Student Loan [Member]
Dec. 31, 2013
Student Loan [Member]
Jun. 30, 2014
Other Loan and Receivable [Member]
Dec. 31, 2013
Other Loan and Receivable [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Senior Debt Securities [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Resecuritization Trusts [Member]
Subordinated Debt Securities [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Senior Debt Securities [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Municipal Bonds [Member]
Subordinated Debt Securities [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Senior Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Senior Debt Securities [Member]
Jun. 30, 2014
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Subordinated Debt Securities [Member]
Dec. 31, 2013
Unconsolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Subordinated Debt Securities [Member]
Jun. 30, 2014
Consolidated VIEs [Member]
Dec. 31, 2013
Consolidated VIEs [Member]
Jun. 30, 2014
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Dec. 31, 2013
Consolidated VIEs [Member]
Resecuritization Trusts [Member]
Jun. 30, 2014
Consolidated VIEs [Member]
Municipal Bonds [Member]
Dec. 31, 2013
Consolidated VIEs [Member]
Municipal Bonds [Member]
Jun. 30, 2014
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Dec. 31, 2013
Consolidated VIEs [Member]
Automobile And Other Securitization Trusts [Member]
Jun. 30, 2014
Securities (Assets) [Member]
Resecuritization Trusts [Member]
Jun. 30, 2013
Securities (Assets) [Member]
Resecuritization Trusts [Member]
Jun. 30, 2014
Securities (Assets) [Member]
Resecuritization Trusts [Member]
Jun. 30, 2013
Securities (Assets) [Member]
Resecuritization Trusts [Member]
Jun. 30, 2014
Available-for-sale Securities [Member]
Resecuritization Trusts [Member]
Variable Interest Entity [Line Items]                                                                                            
Maximum loss exposure                               $ 10,029,000,000 $ 11,913,000,000         $ 2,032,000,000 $ 2,192,000,000         $ 79,000,000 $ 81,000,000             $ 827,000,000 $ 164,000,000 $ 2,210,000,000 $ 2,667,000,000 $ 124,000,000 $ 94,000,000          
On Balance Sheet Assets [Abstract]                                                                                            
Trading account assets                                   1,272,000,000 [1],[2] 971,000,000 [1],[2] 15,000,000 [1],[2] 0 [1],[2]     8,000,000 [1],[2] 53,000,000 [1],[2] 0 [1],[2] 0 [1],[2]     4,000,000 [1],[2] 1,000,000 [1],[2] 0 [1],[2] 0 [1],[2]     1,792,000,000 319,000,000 2,227,000,000 2,684,000,000 63,000,000 0          
Loans and leases 911,899,000,000 928,233,000,000                                                               102,799,000,000 109,118,000,000 0 0 0 0 616,000,000 680,000,000          
Debt securities carried at fair value                                   7,919,000,000 [1],[2] 10,866,000,000 [1],[2] 73,000,000 [1],[2] 71,000,000 [1],[2]     0 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2]     65,000,000 [1],[2] 70,000,000 [1],[2] 0 [1],[2] 0 [1],[2]                          
Held-to-maturity, at cost (fair value – $59,181 and $52,430; $17,359 and $20,869 pledged as collateral) 60,022,000,000 [3] 55,150,000,000                               746,000,000 [1],[2] 0 [1],[2]         0 [1],[2] 0 [1],[2]         0 [1],[2] 0 [1],[2]                              
Residual interests held                               4,000,000 [4] 5,000,000 [4]         0 [4] 0 [4]         0 [4] 0 [4]                                  
All other Assets 121,651,000,000 124,090,000,000                           0 0         0 0         10,000,000 10,000,000         3,946,000,000 4,577,000,000 0 0 0 0 59,000,000 61,000,000          
Total assets 2,170,557,000,000 [5] 2,102,273,000,000 [5] 2,123,320,000,000 [5]                         10,029,000,000 11,913,000,000         8,000,000 53,000,000         79,000,000 81,000,000         112,281,000,000 121,002,000,000 1,792,000,000 319,000,000 2,227,000,000 2,684,000,000 738,000,000 741,000,000          
Unconsolidated, Total assets of VIEs                               30,846,000,000 [6] 40,924,000,000 [6]         3,371,000,000 [6] 3,643,000,000 [6]         1,504,000,000 [6] 1,788,000,000 [6]                                  
On Balance Sheet Liabilities [Abstract]                                                                                            
Short-term borrowings (includes $2,350 and $1,520 measured at fair value) 45,873,000,000 45,999,000,000                                                               927,000,000 1,150,000,000 0 0 927,000,000 1,073,000,000 0 0          
Long-term debt 257,071,000,000 249,674,000,000                                                               16,333,000,000 19,448,000,000 965,000,000 155,000,000 17,000,000 17,000,000 613,000,000 646,000,000          
All other liabilities                                                                   93,000,000 253,000,000 0 0 0 0 1,000,000 1,000,000          
Total liabilities 1,933,146,000,000 1,869,588,000,000                                                               17,353,000,000 20,851,000,000 965,000,000 155,000,000 944,000,000 1,090,000,000 614,000,000 647,000,000          
In Text Details [Abstract]                                                                                            
Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds, in Period                                                                                   3,100,000,000 4,700,000,000 5,200,000,000 11,500,000,000 943,000,000
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale       62,000,000 [7] 0                                                                                  
Liquidity Commitments To Unconsolidated Securitization Trusts           2,000,000,000 2,100,000,000                                                                              
Weighted average remaining life of bonds held in the trusts in years 7 years 6 months                                                                                          
Qualitative and Quantitative Information, Transferor's Continuing Involvement, Principal Amount Outstanding, Continued Recognition, Amount               $ 2,200,000,000 $ 2,500,000,000 $ 611,000,000 $ 877,000,000 $ 738,000,000 $ 741,000,000 $ 893,000,000 $ 911,000,000                                                              
[1] As a holder of these securities, the Corporation receives scheduled principal and interest payments. During the three and six months ended June 30, 2014 and 2013, there were no OTTI losses recorded on those securities classified as AFS debt securities.
[2] The retained senior and subordinate securities were valued using quoted market prices or observable market inputs (Level 2 of the fair value hierarchy).
[3] Substantially all U.S. agency MBS.
[4] The retained residual interests are carried at fair value which was derived using model valuations (Level 2 of the fair value hierarchy).
[5] There were no material intersegment revenues.
[6] Total assets include loans the Corporation transferred with which the Corporation has continuing involvement, which may include servicing the loan.
[7] Substantially all of the first-lien residential and commercial mortgage loans securitized are initially classified as LHFS and accounted for under the fair value option. As such, gains are recognized on these LHFS prior to securitization. The Corporation recognized $185 million and $383 million of gains, net of hedges, on loans securitized during the three and six months ended June 30, 2014 compared to $661 million and $1.3 billion for the same periods in 2013.