DEPOSITS (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Deposit Liability [Line Items]
Non-interest-bearing deposits in U.S. offices	$ 104,061	$ 122,655
Interest-bearing deposits in U.S. offices (including $1,001 and $903 as of September 30, 2023 and December 31, 2022, respectively, at fair value)	569,428	607,470
Non-interest-bearing deposits in offices outside the U.S.	84,663	95,182
Interest-bearing deposits in offices outside the U.S. (including $1,721 and $972 as of September 30, 2023 and December 31, 2022, respectively, at fair value)	515,354	540,647
Total deposits	1,273,506	1,365,954
Fair value
Deposit Liability [Line Items]
Interest-bearing deposits in U.S. offices (including $1,001 and $903 as of September 30, 2023 and December 31, 2022, respectively, at fair value)	1,001	903
Interest-bearing deposits in offices outside the U.S. (including $1,721 and $972 as of September 30, 2023 and December 31, 2022, respectively, at fair value)	1,721	972
Total deposits	$ 1,270,100	$ 1,345,400