LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred interest on loans, allowance for credit losses	$ 0		$ 214,000
Loans, net of unearned income	18,806,856		15,874,258
Interest income on nonaccrual loans	0	$ 0
Loans modified that are not troubled debt restructurings	296,400	$ 322,800
9
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	0		0
Loans Excluding Purchased Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructuring	39,800		76,600
Previous charge-offs	649		654
Allowance for loan losses allocated to troubled debt restructuring	2,600		10,500
Loan Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 55,400		$ 54,800