VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Net loans and leases	$ 154,679,000,000	$ 126,405,000,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Net loans and leases	4,578,000,000	2,646,000,000
Net impairment losses recognized in earnings	0	0	$ 0
Variable Interest Entity, Not Primary Beneficiary | Special Purpose Entities
Variable Interest Entity [Line Items]
Net loans and leases	4,600,000,000	2,600,000,000
Commitments to extend credit | Variable Interest Entity, Not Primary Beneficiary | Special Purpose Entities
Variable Interest Entity [Line Items]
Undrawn commitments to extend credit	$ 2,400,000,000	$ 1,900,000,000