Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Short-term Debt [Abstract]      
Short-term borrowings $ 51,409   $ 45,999
Securities Borrowed or Purchased Under Agreements to Resell 215,289   190,328
Federal Funds Sold And Securities Borrowed Or Purchased Under Agreements To Resell 215,299   190,328
Securities Loaned or Sold Under Agreements to Repurchase 202,895   197,920
Federal funds sold [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 2 2  
Average Rate During Year (percent) 0.73% 0.60%  
Maximum Month-end Balance During Year 10 0  
Short-term borrowings (10)   0
Rate 0.72%   0.00%
Securities borrowed or purchased under agreements to resell [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 212,502 237,461  
Average Rate During Year (percent) 0.51% 0.54%  
Maximum Month-end Balance During Year 219,181 249,791  
Short-term borrowings (215,289)   (190,328)
Rate 0.44%   0.60%
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 212,504 237,463  
Average Rate During Year (percent) 0.51% 0.54%  
Short-term borrowings 215,299   190,328
Rate 0.44%   0.60%
Federal Funds Purchased [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 172 192  
Average Rate During Year (percent) 0.04% 0.05%  
Maximum Month-end Balance During Year 213 176  
Short-term borrowings 213   186
Rate 0.05%   0.00%
Securities Loaned or Sold under Agreements to Repurchase [Member]
      
Short-term Debt [Abstract]      
Short-term borrowings 202,895   197,920
Rate 1.09%   0.92%
Securities Sold under Agreements to Repurchase [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 204,632 300,746  
Average Rate During Year (percent) 1.03% 0.72%  
Maximum Month-end Balance During Year 216,726 319,608  
Other Short-term Borrowings [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 48,167 36,706  
Average Rate During Year (percent) 0.75% 2.36%  
Maximum Month-end Balance During Year 51,409 42,148  
Short-term borrowings 51,409   45,999
Rate 1.13%   1.55%
Federal Funds Purchased, Securities Loaned or Sold under Agreements to Repurchase and Other Short-term Borrowings [Member]
      
Short-term Debt [Abstract]      
Average Amount During Year 252,971 337,644  
Average Rate During Year (percent) 0.98% 0.90%  
Short-term borrowings $ 254,517   $ 244,105
Rate 1.10%   1.03%