Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Commitments And Contingencies Disclosure [Abstract] | |||
| Rent expense and certain office equipment expense | $ 136 | $ 132 | $ 137 |
| Various capital commitments to fund sponsored investment funds, including funds of private equity funds, real estate funds, infrastructure funds, opportunistic funds and distressed credit funds | 179 | ||
| Contingent commitments | 38 | ||
| Derivative maximum risk of loss for credit protection | 17 | ||
| Securities lending loan balances indemnified | 169,300 | ||
| Collateral for indemnified securities | $ 179,600 | ||