VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Commitments to extend credit | Variable Interest Entity, Not Primary Beneficiary | Special Purpose Entities
Variable Interest Entity [Line Items]
Undrawn commitments to extend credit	$ 2,700	$ 2,400
Renewable Energy Wind Investments | Renewable Energy Entities
Variable Interest Entity [Line Items]
Undrawn commitments to extend credit	$ 67