LOANS AND LEASES - Schedule of Non-Performing Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 159	$ 107
Non-Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	159	107
Total non-performing loans and leases	159	107
Other real estate owned	3	3
Total non-performing assets	$ 162	$ 110
Non-performing loans and leases / total loans and leases	0.47%	0.33%
Non-performing assets plus 90 days or more past due / total loans and leases plus OREO	0.52%	0.38%
Past due	90 days	90 days