Transactions with Affiliated Funds - Fees Receivable from Affiliated Funds and the Aggregate Carrying Value of the Firm's Interests in these Funds (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Transactions With Affiliated Funds [Abstract]
Fees receivable from funds	$ 569	$ 599
Aggregate carrying value of interests in funds	$ 7,452	$ 7,768