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, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
On-balance sheet assets        
Trading account assets $ 209,044 $ 180,209    
Debt securities carried at fair value 312,012 313,660    
Loans and leases 906,242 906,683    
Allowance for loan and lease losses (11,112) (11,237) $ (12,069) $ (12,234)
Loans held-for-sale 14,751 9,066    
All other assets 115,705 120,709    
Total assets 2,247,701 2,187,702 $ 2,185,726  
On-balance sheet liabilities        
Long-term debt 221,385 216,823    
Total liabilities 1,979,548 1,920,862    
Other Variable Interest Entities        
Variable Interest Entity [Line Items]        
Maximum loss exposure 24,109 23,821    
On-balance sheet assets        
Trading account assets 2,868 2,591    
Debt securities carried at fair value 161 75    
Loans and leases 6,772 6,648    
Allowance for loan and lease losses (37) (33)    
Loans held-for-sale 1,034 652    
All other assets 13,422 13,525    
Total assets 24,220 23,458    
On-balance sheet liabilities        
Long-term debt 506 395    
All other liabilities 3,008 2,983    
Total liabilities 3,514 3,378    
Consolidated total assets of VIEs 6,526 6,305    
Unconsolidated total assets of VIEs 63,875 62,095    
Total assets of VIEs 70,401 68,400    
Other Variable Interest Entities | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 6,210 6,114    
On-balance sheet assets        
Trading account assets 2,644 2,358    
Debt securities carried at fair value 0 0    
Loans and leases 3,421 3,399    
Allowance for loan and lease losses (9) (9)    
Loans held-for-sale 128 188    
All other assets 342 369    
Total assets 6,526 6,305    
On-balance sheet liabilities        
Long-term debt 506 395    
All other liabilities 24 24    
Total liabilities 530 419    
Long-term debt with recourse to general corporation credit 214 229    
Other Variable Interest Entities | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 17,899 17,707    
On-balance sheet assets        
Trading account assets 224 233    
Debt securities carried at fair value 161 75    
Loans and leases 3,351 3,249    
Allowance for loan and lease losses (28) (24)    
Loans held-for-sale 906 464    
All other assets 13,080 13,156    
Total assets 17,694 17,153    
On-balance sheet liabilities        
Long-term debt 0 0    
All other liabilities 2,984 2,959    
Total liabilities $ 2,984 $ 2,959