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ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES - Schedule of Changes in Allowance for Credit Losses (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | $ 423.0 |  |
Charge- Offs | (84.7) | $ (81.8) |
Provision for Credit Losses | 86.0 | 79.8 | $ 72.0
Balance at End of Year | 439.0 | 423.0 |
Unfunded loan commitment |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 21.4 | 21.5 | 21.4
Charge- Offs | 0.0 | 0.0 | 0.0
Recoveries | 0.0 | 0.0 | 0.0
Net Charge- Offs | 0.0 | 0.0 | 0.0
Provision for Credit Losses | (1.3) | (0.1) | 0.1
Balance at End of Year | 20.1 | 21.4 | 21.5
Total commercial loans and leases |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 279.7 | 279.3 | 281.7
Charge- Offs | (72.8) | (64.0) | (68.1)
Recoveries | 10.4 | 13.3 | 9.2
Net Charge- Offs | (62.4) | (50.7) | (58.9)
Provision for Credit Losses | 88.1 | 51.1 | 56.5
Balance at End of Year | 305.4 | 279.7 | 279.3
Total commercial loans and leases | Commercial real estate |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 166.9 | 166.6 | 162.1
Charge- Offs | (30.0) | (38.6) | (12.4)
Recoveries | 1.3 | 2.5 | 4.4
Net Charge- Offs | (28.7) | (36.1) | (8.0)
Provision for Credit Losses | 37.7 | 36.4 | 12.5
Balance at End of Year | 175.9 | 166.9 | 166.6
Total commercial loans and leases | Commercial and industrial |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 85.6 | 87.8 | 102.1
Charge- Offs | (37.9) | (20.9) | (51.2)
Recoveries | 8.1 | 9.3 | 3.8
Net Charge- Offs | (29.8) | (11.6) | (47.4)
Provision for Credit Losses | 43.1 | 9.4 | 33.1
Balance at End of Year | 98.9 | 85.6 | 87.8
Total commercial loans and leases | Commercial leases |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 22.9 | 21.2 | 13.5
Charge- Offs | (0.2) | (0.3) | 0.0
Recoveries | 0.0 | 0.1 | 0.0
Net Charge- Offs | (0.2) | (0.2) | 0.0
Provision for Credit Losses | 3.5 | 1.9 | 7.7
Balance at End of Year | 26.2 | 22.9 | 21.2
Total commercial loans and leases | Other |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 4.3 | 3.7 | 4.0
Charge- Offs | (4.7) | (4.2) | (4.5)
Recoveries | 1.0 | 1.4 | 1.0
Net Charge- Offs | (3.7) | (2.8) | (3.5)
Provision for Credit Losses | 3.8 | 3.4 | 3.2
Balance at End of Year | 4.4 | 4.3 | 3.7
Total commercial loans and leases | Unfunded loan commitment |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Provision for Credit Losses | (1.1) | 0.1 | 0.3
Total consumer loans |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 143.1 | 126.3 | 120.0
Charge- Offs | (11.9) | (17.8) | (13.0)
Recoveries | 3.8 | 5.8 | 4.2
Net Charge- Offs | (8.1) | (12.0) | (8.8)
Provision for Credit Losses | (0.9) | 28.8 | 15.1
Balance at End of Year | 134.1 | 143.1 | 126.3
Total consumer loans | Direct installment |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 29.1 | 33.8 | 35.9
Charge- Offs | (0.9) | (1.8) | (0.6)
Recoveries | 0.7 | 1.1 | 0.6
Net Charge- Offs | (0.2) | (0.7) | 0.0
Provision for Credit Losses | (3.2) | (4.0) | (2.1)
Balance at End of Year | 25.7 | 29.1 | 33.8
Total consumer loans | Residential mortgages |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 95.9 | 70.5 | 55.5
Charge- Offs | (2.4) | (2.6) | (0.7)
Recoveries | 0.5 | 1.2 | 0.5
Net Charge- Offs | (1.9) | (1.4) | (0.2)
Provision for Credit Losses | (1.6) | 26.8 | 15.2
Balance at End of Year | 92.4 | 95.9 | 70.5
Total consumer loans | Indirect installment |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 9.5 | 12.8 | 17.3
Charge- Offs | (7.6) | (11.8) | (10.7)
Recoveries | 2.2 | 2.6 | 2.3
Net Charge- Offs | (5.4) | (9.2) | (8.4)
Provision for Credit Losses | 4.9 | 5.9 | 3.9
Balance at End of Year | 9.0 | 9.5 | 12.8
Total consumer loans | Consumer lines of credit |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 8.6 | 9.2 | 11.3
Charge- Offs | (1.0) | (1.6) | (1.0)
Recoveries | 0.4 | 0.9 | 0.8
Net Charge- Offs | (0.6) | (0.7) | (0.2)
Provision for Credit Losses | (1.0) | 0.1 | (1.9)
Balance at End of Year | 7.0 | 8.6 | 9.2
Total consumer loans | Unfunded loan commitment |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Provision for Credit Losses | (0.2) | (0.2) | (0.2)
Allowance for credit losses on loans and leases |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 422.8 | 405.6 | 401.7
Charge- Offs | (84.7) | (81.8) | (81.1)
Recoveries | 14.2 | 19.1 | 13.4
Net Charge- Offs | (70.5) | (62.7) | (67.7)
Provision for Credit Losses | 87.2 | 79.9 | 71.6
Balance at End of Year | 439.5 | 422.8 | 405.6
Allowance for credit losses on loans and leases and allowance for unfunded loan commitments |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |
Balance at Beginning of Year | 444.2 | 427.1 | 423.1
Charge- Offs | (84.7) | (81.8) | (81.1)
Recoveries | 14.2 | 19.1 | 13.4
Net Charge- Offs | (70.5) | (62.7) | (67.7)
Provision for Credit Losses | 85.9 | 79.8 | 71.7
Balance at End of Year | $ 459.6 | $ 444.2 | $ 427.1

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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