LOANS AND LEASES - Schedule of Financial Effects of Loans Modified (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	14 months	21 months	14 months
Weighted Average Interest Rate Reduction	0.81%	1.00%	2.89%
Weighted Average Payment Delay (in Months)	9 months	13 months	6 months
Loan modifications	$ 1		$ 1
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	14 months	20 months	12 months
Weighted Average Interest Rate Reduction	0.72%	0.86%	2.71%
Weighted Average Payment Delay (in Months)	9 months	13 months	6 months
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	13 months	19 months	13 months
Weighted Average Interest Rate Reduction	0.72%	0.79%	2.04%
Weighted Average Payment Delay (in Months)	11 months	11 months	6 months
Commercial | Owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	10 months	30 months	17 months
Weighted Average Interest Rate Reduction	1.88%	1.42%	3.52%
Weighted Average Payment Delay (in Months)	3 months	7 months	0 months
Commercial | Investor dependent
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	10 months	11 months	9 months
Weighted Average Interest Rate Reduction	0.00%	2.75%	1.00%
Weighted Average Payment Delay (in Months)	7 months	8 months	5 months
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	16 months	20 months	12 months
Weighted Average Interest Rate Reduction	0.56%	0.78%	3.00%
Weighted Average Payment Delay (in Months)	10 months	39 months	7 months
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	17 months	56 months	74 months
Weighted Average Interest Rate Reduction	3.26%	2.73%	4.08%
Weighted Average Payment Delay (in Months)	6 months	11 months	6 months
Consumer | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	16 months	71 months	79 months
Weighted Average Interest Rate Reduction	2.75%	1.89%	4.13%
Weighted Average Payment Delay (in Months)	6 months	11 months	6 months
Consumer | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	24 months	37 months	59 months
Weighted Average Interest Rate Reduction	4.20%	4.27%	2.81%
Weighted Average Payment Delay (in Months)	5 months	0 months	0 months
Consumer | Auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	20 months	31 months	27 months
Weighted Average Interest Rate Reduction	0.31%	0.53%	0.69%
Weighted Average Payment Delay (in Months)	0 months	0 months	0 months
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Term Extension (in Months)	60 months	60 months	53 months
Weighted Average Interest Rate Reduction	9.72%	9.66%	9.42%
Weighted Average Payment Delay (in Months)	0 months	0 months	0 months