Annual report pursuant to Section 13 and 15(d)

Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings - Remaining Contractual Maturity (Details)

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Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings - Remaining Contractual Maturity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Remaining Contractual Maturity    
Securities sold under agreements to repurchase $ 290,895 $ 280,236
Securities loaned 21,687 18,792
Other 22,711 14,448
Total $ 335,293 $ 313,476
Maximum agreement maturity period (less than) 3 years 3 years
Overnight and Continuous    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase $ 125,956 $ 129,853
Securities loaned 9,853 8,564
Other 22,711 14,448
Total 158,520 152,865
30 Days or Less    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 79,913 77,780
Securities loaned 5,658 6,602
Other 0 0
Total 85,571 84,382
After 30 Days Through 90 Days    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 46,091 31,851
Securities loaned 2,043 1,473
Other 0 0
Total 48,134 33,324
Greater than 90 Days    
Remaining Contractual Maturity    
Securities sold under agreements to repurchase 38,935 40,752
Securities loaned 4,133 2,153
Other 0 0
Total $ 43,068 $ 42,905