PLEDGED ASSETS, RESTRICTED CASH, COLLATERAL, GUARANTEES AND COMMITMENTS - Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 16,976	$ 13,422
Asset pledged as collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Financial instruments owned, at fair value	1,800
Cash and due from banks
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	4,820	2,786
Deposits with banks, net of allowance
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 12,156	$ 10,636