Quarterly report pursuant to Section 13 or 15(d)

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

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Securitizations and Other Variable Interest Entities - Other Variable Interest Entities (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Dec. 31, 2017
On-balance sheet assets            
Trading account assets $ 263,684   $ 214,348      
Debt securities carried at fair value 254,342   238,101      
Loans and leases 972,910   946,895      
Allowance for loan and lease losses (9,433) $ (9,527) (9,601) $ (9,734) $ (10,050) $ (10,393)
All other assets 131,391   116,320      
Total assets 2,426,330   2,354,507 $ 2,338,833    
On-balance sheet liabilities            
Long-term debt 243,405   229,392      
Total liabilities 2,157,943   2,089,182      
Consolidated VIEs            
On-balance sheet assets            
Trading account assets 5,758   5,798      
Loans and leases 39,387   43,850      
Allowance for loan and lease losses (835)   (912)      
All other assets 555   337      
Total assets 44,865   49,073      
On-balance sheet liabilities            
Long-term debt 8,560   10,944      
All other liabilities 26   30      
Total liabilities 10,860   11,716      
Other Variable Interest Entities            
Variable Interest Entity [Line Items]            
Maximum loss exposure 29,715   28,675      
On-balance sheet assets            
Trading account assets 2,885   3,195      
Debt securities carried at fair value 76   84      
Loans and leases 5,220   5,889      
Allowance for loan and lease losses (36)   (32)      
All other assets 19,026   18,938      
Total assets 27,171   28,074      
On-balance sheet liabilities            
Long-term debt 44   152      
All other liabilities 4,654   4,238      
Total liabilities 4,698   4,390      
Consolidated total assets of VIEs 4,054   4,335      
Unconsolidated total assets of VIEs 96,045   94,746      
Total assets of VIEs 100,099   99,081      
Other Variable Interest Entities | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 4,009   4,177      
On-balance sheet assets            
Trading account assets 2,170   2,335      
Debt securities carried at fair value 0   0      
Loans and leases 1,804   1,949      
Allowance for loan and lease losses (2)   (2)      
All other assets 82   53      
Total assets 4,054   4,335      
On-balance sheet liabilities            
Long-term debt 44   152      
All other liabilities 2   7      
Total liabilities 46   159      
Other Variable Interest Entities | Unconsolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 25,706   24,498      
On-balance sheet assets            
Trading account assets 715   860      
Debt securities carried at fair value 76   84      
Loans and leases 3,416   3,940      
Allowance for loan and lease losses (34)   (30)      
All other assets 18,944   18,885      
Total assets 23,117   23,739      
On-balance sheet liabilities            
Long-term debt 0   0      
All other liabilities 4,652   4,231      
Total liabilities $ 4,652   $ 4,231