Pledged Assets and Collateral (Details) - USD ($) $ in Billions |
Mar. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Pledged assets and Collateral | ||
| Financial instruments pledged by the Firm that may not be sold or repledged by the secured parties | $ 54.8 | $ 50.7 |
| Fair value of financial assets accepted as collateral to sell or repledge, deliver or otherwise use | 808.2 | 748.5 |
| Collateral received that was sold or repledged | 643.2 | 580.9 |
| Assets pledged to Federal Reserve Banks and Federal Home Loan Banks | ||
| Pledged assets and Collateral | ||
| Pledged assets | $ 396.6 | $ 385.6 |