Federal Funds Sold or Purchased, Securities Financing Agreements and Short-term Borrowings - Class of Collateral Pledged (Details) $ in Millions	Jun. 30, 2015 USD ($)
Class of Collateral Pledged (1)
Total	$ 363,029
U.S. government and agency securities
Class of Collateral Pledged (1)
Total	148,102
Corporate securities, trading loans and other
Class of Collateral Pledged (1)
Total	13,684
Equity securities
Class of Collateral Pledged (1)
Total	65,018
Non-U.S. sovereign debt
Class of Collateral Pledged (1)
Total	122,694
Mortgage trading loans and ABS
Class of Collateral Pledged (1)
Total	$ 13,531