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LOANS AND LEASES - Schedule of Loans and Leases, Net of Unearned Income (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | $ 34,777 | [1] | $ 33,939 | [1] | $ 32,323
Total commercial loans and leases |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 20,924 |  | 21,164 |  |
Total commercial loans and leases | Commercial real estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 12,274 |  | 12,705 |  |
Total commercial loans and leases | Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 7,718 |  | 7,550 |  |
Total commercial loans and leases | Commercial leases |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 791 |  | 765 |  |
Total commercial loans and leases | Other |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 141 |  | 144 |  |
Total consumer loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 13,853 |  | 12,775 |  |
Total consumer loans | Direct installment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 2,678 |  | 2,676 |  |
Total consumer loans | Residential mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 8,882 |  | 7,986 |  |
Total consumer loans | Indirect installment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | 767 |  | 739 |  |
Total consumer loans | Consumer lines of credit |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total Loans and Leases | $ 1,526 |  | $ 1,374 |  |
[1] | Amount represents loans for which we have elected the fair value option. See Note 25.

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