Collateralized Agreements and Financings - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Other Secured Financings [Line Items]
Securities borrowed at fair value	$ 42,506	$ 39,955
Securities loaned at fair value	7,444	9,170
Other secured financings	15,595	18,544
Transfers of financial assets accounted for as financings included in other secured financings	1,640	1,970
Financings collateralized by financial assets	1,620	2,020
Other secured financings collateralized by financial instruments	9,030	10,370
Other secured financings collateralized by trading assets, investments and loans	627	2,450
Securities segregated for regulatory and other purposes	54,710	41,490
Nonrecourse
Other Secured Financings [Line Items]
Other secured financings	8,190	8,640
Non-U.S. Dollar
Other Secured Financings [Line Items]
Other secured financings	$ 5,298	$ 8,232
Weighted average interest rates, short term	0.22%	0.22%
Weighted average interest rates, long term	0.46%	0.46%
U.S. Dollar
Other Secured Financings [Line Items]
Other secured financings	$ 10,297	$ 10,312
Weighted average interest rates, short term	4.13%
Weighted average interest rates, long term	4.01%	1.06%