ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Types of TDR (Details) - loan	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	66	100
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	2	3
Commercial | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	2
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	64	93
Contractual payment reduction and term extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	50	53
Contractual payment reduction and term extension | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Contractual payment reduction and term extension | Commercial | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Contractual payment reduction and term extension | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Contractual payment reduction and term extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Contractual payment reduction and term extension | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	50	51
Maturity Date Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	8	34
Maturity Date Extension | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Maturity Date Extension | Commercial | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Maturity Date Extension | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Maturity Date Extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Maturity Date Extension | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	8	32
Discharged in bankruptcy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	4	8
Discharged in bankruptcy | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Discharged in bankruptcy | Commercial | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Discharged in bankruptcy | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Discharged in bankruptcy | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	1
Discharged in bankruptcy | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	4	7
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	4	5
Other | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	2	2
Other | Commercial | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Other | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Other | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	0	0
Other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan modifications	2	3