LOANS (Loans by credit quality indicator narrative) (Details) - USD ($)	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, before allowance for credit loss	$ 10,923,532,000		$ 9,954,572,000
Allowance for credit loss	105,715,000		$ 110,088,000
Loans secured by residential real estate property in process of foreclosure	$ 846,000
Loans delinquent 30 to 89 days, percentage	0.10%		0.07%
Interest income on nonaccrual loans	$ 0	$ 0
Nonaccrual loans with no related allowance	32,500,000		$ 25,500,000
Nonpass | Paycheck Protection Program ("PPP")
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable, before allowance for credit loss	2,600,000		$ 27,800,000
Allowance for credit loss	$ 0