Quarterly report pursuant to Section 13 or 15(d)

Federal Funds Sold or Purchased, Securities Financing Agreements, Short-term Borrowings and Restricted Cash - Schedule (Details)

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Federal Funds Sold or Purchased, Securities Financing Agreements, Short-term Borrowings and Restricted Cash - Schedule (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Federal funds purchased and securities loaned or sold under agreements to repurchase        
Amount        
Average during period $ 191,693 $ 197,794 $ 193,854 $ 199,433
Maximum month-end balance during period $ 189,206 $ 197,604 $ 199,419 $ 218,017
Rate        
Average during period 1.88% 1.37% 1.71% 1.18%
Short-term borrowings        
Amount        
Average during period $ 33,410 $ 32,153 $ 40,048 $ 38,329
Maximum month-end balance during period $ 36,043 $ 32,679 $ 52,480 $ 46,202
Rate        
Average during period 2.89% 2.54% 2.49% 2.43%
Federal funds sold and securities borrowed or purchased under agreements to resell        
Amount        
Average during period $ 241,426 $ 223,585 $ 247,183 $ 222,255
Maximum month-end balance during period $ 267,989 $ 224,815 $ 267,989 $ 237,064
Rate        
Average during period 1.31% 0.86% 1.15% 0.77%