Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Other (Details)

v2.4.0.8
Securitizations and Other Variable Interest Entities - Other (Details) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Jun. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Dec. 31, 2011
Sep. 30, 2013
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Dec. 31, 2012
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Sep. 30, 2013
Investment Vehicles [Member]
Dec. 31, 2012
Investment Vehicles [Member]
Sep. 30, 2013
Other Asset Back Financing Arrangement [Member]
Dec. 31, 2012
Other Asset Back Financing Arrangement [Member]
Sep. 30, 2013
Consolidated VIEs [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Sep. 30, 2013
Consolidated VIEs [Member]
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Sep. 30, 2013
Consolidated VIEs [Member]
Investment Vehicles [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Investment Vehicles [Member]
Sep. 30, 2013
Consolidated VIEs [Member]
Leveraged Lease Trusts [Member]
Dec. 31, 2012
Consolidated VIEs [Member]
Leveraged Lease Trusts [Member]
Sep. 30, 2013
Unconsolidated VIEs [Member]
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Other Investment Vehicles Funds Trusts Conduits And Real Estate Vehicles [Member]
Sep. 30, 2013
Unconsolidated VIEs [Member]
Investment Vehicles [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Investment Vehicles [Member]
Sep. 30, 2013
Unconsolidated VIEs [Member]
Real Estate Vehicles [Member]
Dec. 31, 2012
Unconsolidated VIEs [Member]
Real Estate Vehicles [Member]
Sep. 30, 2013
Mortgage servicing rights [Member]
Investment Vehicles [Member]
Variable Interest Entity [Line Items]                                                      
Maximum loss exposure             $ 13,780 $ 12,100 $ 3,800 $ 2,100 $ 1,200 $ 2,500     $ 4,975 $ 5,608         $ 8,805 $ 6,492         $ 2,000
On Balance Sheet Assets [Abstract]                                                      
Trading account assets             97 108             97 108         0 0          
Derivative assets 53,161   53,497       380 460         199 333 0 0         380 460          
AFS Debt Securities             1,687 39             0 0         1,687 39          
Loans and leases 934,392   907,819       4,215 4,628         109,996 123,227 3,965 4,561         250 67          
Allowance for loan and lease losses (19,432) (21,235) (24,179) (26,233) (30,288) (33,783) (4) (14)         (2,962) (3,658) (4) (14)         0 0          
Loans held-for-sale 15,001   19,413       171 262         1,875 1,969 77 105         94 157          
Other Assets 122,068   150,112       7,067 6,769         4,314 4,654 988 1,001         6,079 5,768          
Total assets 2,126,653   2,209,974 2,166,162     13,613 12,252         122,165 134,431 5,123 5,761 1,200 1,300 3,900 4,400 8,490 6,491 4,800 3,000 5,800 5,400  
On Balance Sheet Liabilities [Abstract]                                                      
Long-term debt 255,331   275,585       867 889         24,481 34,256 867 889         0 0          
Other Liabilities             2,210 1,755         382 360 73 63         2,137 1,692          
Total liabilities 1,894,371   1,973,018       3,077 2,644         27,043 38,347 940 952         2,137 1,692          
Consolidated, Total assets of VIEs                             5,123 5,761                     1,700
Unconsolidated, Total assets of VIEs                                         11,004 8,660          
Total assets of VIEs             $ 16,127 $ 14,421                                      
In Text Details [Abstract]                                                      
Financing provided for asset-backed financing arrangements, percentage                     75.00%