Quarterly report pursuant to Section 13 or 15(d)

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

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Federal Funds Sold or Purchased, Securities Financing Agreements, Short-term Borrowings and Restricted Cash (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Federal funds purchased and securities loaned or sold under agreements to repurchase        
Amount        
Average during period $ 194,298 $ 208,760 $ 194,953 $ 200,265
Maximum month-end balance during period $ 199,419 $ 218,017 $ 199,419 $ 218,017
Rate        
Average during period 1.85% 1.21% 1.63% 1.08%
Short-term borrowings        
Amount        
Average during period $ 40,542 $ 42,881 $ 43,422 $ 41,468
Maximum month-end balance during period $ 44,382 $ 46,202 $ 52,480 $ 46,202
Rate        
Average during period 5.61% 2.65% 4.75% 2.39%
Federal funds sold and securities borrowed or purchased under agreements to resell        
Amount        
Average during period $ 251,880 $ 226,700 $ 250,110 $ 221,579
Maximum month-end balance during period $ 264,923 $ 237,064 $ 264,923 $ 237,064
Rate        
Average during period 1.13% 0.77% 1.07% 0.72%