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
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
On-balance sheet assets        
Trading account assets $ 239,062 $ 214,348    
Debt securities carried at fair value 241,956 238,101    
Loans and leases 945,615 946,895    
Allowance for loan and lease losses (9,577) (9,601) $ (10,260) $ (10,393)
All other assets 131,884 116,320    
Total assets 2,377,164 2,354,507 $ 2,328,478  
On-balance sheet liabilities        
Long-term debt 233,929 229,392    
Total liabilities 2,110,154 2,089,182    
Consolidated VIEs        
On-balance sheet assets        
Trading account assets 5,453 5,798    
Loans and leases 41,528 43,850    
Allowance for loan and lease losses (884) (912)    
All other assets 332 337    
Total assets 46,429 49,073    
On-balance sheet liabilities        
Long-term debt 8,182 10,944    
All other liabilities 25 30    
Total liabilities 9,754 11,716    
Other Variable Interest Entities        
Variable Interest Entity [Line Items]        
Maximum loss exposure 28,333 28,675    
On-balance sheet assets        
Trading account assets 3,024 3,195    
Debt securities carried at fair value 82 84    
Loans and leases 5,958 5,889    
Allowance for loan and lease losses (32) (32)    
All other assets 19,043 18,938    
Total assets 28,075 28,074    
On-balance sheet liabilities        
Long-term debt 98 152    
All other liabilities 3,989 4,238    
Total liabilities 4,087 4,390    
Consolidated total assets of VIEs 4,054 4,335    
Unconsolidated total assets of VIEs 92,018 94,746    
Total assets of VIEs 96,072 99,081    
Other Variable Interest Entities | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 3,950 4,177    
On-balance sheet assets        
Trading account assets 2,134 2,335    
Debt securities carried at fair value 0 0    
Loans and leases 1,872 1,949    
Allowance for loan and lease losses (2) (2)    
All other assets 50 53    
Total assets 4,054 4,335    
On-balance sheet liabilities        
Long-term debt 98 152    
All other liabilities 7 7    
Total liabilities 105 159    
Other Variable Interest Entities | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 24,383 24,498    
On-balance sheet assets        
Trading account assets 890 860    
Debt securities carried at fair value 82 84    
Loans and leases 4,086 3,940    
Allowance for loan and lease losses (30) (30)    
All other assets 18,993 18,885    
Total assets 24,021 23,739    
On-balance sheet liabilities        
Long-term debt 0 0    
All other liabilities 3,982 4,231    
Total liabilities $ 3,982 $ 4,231