Collateralized Agreements and Financings - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Secured Financings [Line Items]
Resale agreements	$ 190,446	$ 225,117
Securities borrowed at fair value	36,792	38,578
Securities loaned at fair value	8,178	4,372
Other secured financings	14,728	13,946
Transfers of financial assets accounted for as financings included in other secured financings	2,320	1,690
Financings collateralized by financial assets	2,290	1,640
Other secured financings collateralized by financial instruments	7,770	7,490
Other secured financings collateralized by trading assets, investments and loans	1,950	1,220
Securities segregated for regulatory and other purposes	43,510	49,600
Nonrecourse
Other Secured Financings [Line Items]
Other secured financings	7,190	7,940
U.S. Dollar
Other Secured Financings [Line Items]
Other secured financings	$ 8,659	$ 8,064
Weighted average interest rates, short term	4.64%	5.56%
Weighted average interest rates, long term	3.76%	3.54%
Non-U.S. Dollar
Other Secured Financings [Line Items]
Other secured financings	$ 6,069	$ 5,882
Weighted average interest rates, short term	0.47%
Weighted average interest rates, long term		0.45%