Quarterly report pursuant to Section 13 or 15(d)

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

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Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings Offsetting Assets and Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Offsetting Assets And Liabilities [Abstract]    
Securities borrowed or purchased under agreements to resell, gross asset $ 356,816 $ 366,238
Securities borrowed or purchased under agreements to resell, amounts offset (136,193) (146,914)
Securities Borrowed or Purchased Under Agreements to Resell 220,623 219,324
Securities borrowed or purchased under agreements to resell, financial Instruments (194,312) (191,806)
Securities borrowed or purchased under agreements to resell, net asset 26,311 27,518
Securities loaned or sold under agreements to repurchase, gross liability 384,181 439,022
Securities loaned or sold under agreements to repurchase, amounts offset (136,193) (146,914)
Securities loaned or sold under agreements to repurchase, net balance sheet amount 247,988 292,108
Securities loaned or sold under agreements to repurchase, financial instruments (210,823) (247,756)
Securities loaned or sold under agreements to repurchase, net liability 37,165 44,352
Other, gross liability 13,366 12,306
Other, amounts offset 0 0
Other, net balance sheet amount 13,366 12,306
Other, financial instruments (13,356) (12,302)
Other, net liability 10 4
Total, gross liability 397,547 451,328
Total, amounts offset (136,193) (146,914)
Total, net balance sheet amount 261,354 304,414
Total, financial instruments (224,179) (260,058)
Total, net liability $ 37,175 $ 44,356