DEPOSITS (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Deposit Liability [Line Items]
Non-interest-bearing deposits in U.S. offices	$ 118,034	$ 112,089
Interest-bearing deposits in U.S. offices (including $1,361 and $1,309 as of September 30, 2024 and December 31, 2023, respectively, at fair value)	558,461	576,784
Total deposits in U.S. offices	676,495	688,873
Non-interest-bearing deposits in offices outside the U.S.	84,913	88,988
Interest-bearing deposits in offices outside the U.S. (including $2,751 and $1,131 as of September 30, 2024 and December 31, 2023, respectively, at fair value)	548,591	530,820
Total deposits in offices outside the U.S.	633,504	619,808
Total deposits	1,309,999	1,308,681
Fair value
Deposit Liability [Line Items]
Interest-bearing deposits in U.S. offices (including $1,361 and $1,309 as of September 30, 2024 and December 31, 2023, respectively, at fair value)	1,361	1,309
Interest-bearing deposits in offices outside the U.S. (including $2,751 and $1,131 as of September 30, 2024 and December 31, 2023, respectively, at fair value)	2,751	1,131
Total deposits	$ 1,305,700	$ 1,305,900