Quarterly report pursuant to Section 13 or 15(d)

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

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Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Federal funds purchased and securities loaned or sold under agreements to repurchase        
Amount        
Average during year $ 197,794 $ 177,883 $ 199,433 $ 184,500
Maximum month-end balance during year $ 197,604 $ 192,536 $ 218,017 $ 196,631
Rate        
Average during year (percent) 1.37% 0.93% 1.18% 1.00%
Short-term borrowings        
Amount        
Average during year $ 32,153 $ 29,751 $ 38,329 $ 30,631
Maximum month-end balance during year $ 32,679 $ 31,935 $ 46,202 $ 33,051
Rate        
Average during year (percent) 2.54% 2.02% 2.43% 1.85%
Federal funds sold and securities borrowed or purchased under agreements to resell        
Amount        
Average during year $ 223,585 $ 214,254 $ 222,255 $ 215,476
Maximum month-end asset outstanding amount $ 224,815 $ 222,489 $ 237,064 $ 225,015
Rate        
Average asset outstanding rate (percent) 1.17% 0.50% 1.00% 0.50%