Other Liabilities and Accrued Expenses - Other Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Compensation and benefits	$ 6,556	$ 8,149
Noncontrolling interests	438	459
Income tax-related liabilities	1,527	1,280
Employee interests in consolidated funds	99	149
Subordinated liabilities of consolidated VIEs	584	501
Accrued expenses and other	4,432	8,355
Total	$ 13,636	$ 18,893