Annual report pursuant to Section 13 and 15(d)

Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings - Repurchase Agreements and Securities Loaned Transactions Accounted for as Secured Borrowings (Details)

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Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings - Repurchase Agreements and Securities Loaned Transactions Accounted for as Secured Borrowings (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Remaining Contractual Maturity    
Securities sold under agreements to repurchase $ 280,236 $ 284,303
Securities loaned 18,792 44,775
Other 14,448 13,235
Total $ 313,476 342,313
Maximum agreement maturity period (less than) 3 years  
Overnight and Continuous    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase $ 129,853 126,694
Securities loaned 8,564 39,772
Other 14,448 13,235
Total 152,865 179,701
30 Days or Less    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 77,780 86,879
Securities loaned 6,602 363
Other 0 0
Total 84,382 87,242
After 30 Days Through 90 Days    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 31,851 43,216
Securities loaned 1,473 2,352
Other 0 0
Total 33,324 45,568
Greater than 90 Days    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 40,752 27,514
Securities loaned 2,153 2,288
Other 0 0
Total $ 42,905 $ 29,802