Other Assets - Other Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Other Assets [Abstract]
Property, leasehold improvements and equipment	$ 17,167	$ 18,094
Goodwill	6,288	4,285
Identifiable intangible assets	1,963	418
Operating lease right-of-use assets	2,067	2,292
Income tax-related assets	5,394	3,860
Miscellaneous receivables and other	6,366	5,659
Total	$ 39,245	$ 34,608
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total