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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill Rollforward | The following table shows a rollforward of goodwill by line of business: TABLE 9.1
(in millions) | Community Banking |  | Wealth Manage- ment |  | Insurance |  | Other |  | Total
Balance at January 1, 2024 | $ | 2,446 |  |  | $ | 8 |  |  | $ | 23 |  |  | $ | — |  |  | $ | 2,477 |
Goodwill additions | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Balance at December 31, 2024 | 2,446 |  |  | 8 |  |  | 24 |  |  | — |  |  | 2,478 |
Goodwill additions | — |  |  | — |  |  | — |  |  | 2 |  |  | 2 |
Balance at December 31, 2025 | $ | 2,446 |  |  | $ | 8 |  |  | $ | 24 |  |  | $ | 2 |  |  | $ | 2,480 |
Schedule of Core Deposit Intangibles, Customer Renewal Lists and Mortgage Servicing Rights | The following table shows a summary of core deposit intangibles and customer renewal lists: TABLE 9.2
(in millions) | Core Deposit Intangibles |  | Customer Renewal Lists |  | Total
December 31, 2025 |  |  |  |  |
Gross carrying amount | $ | 258 |  |  | $ | 19 |  |  | $ | 277 |
Accumulated amortization | (224) |  |  | (17) |  |  | (241) |
Net carrying amount | $ | 34 |  |  | $ | 2 |  |  | $ | 36 |
December 31, 2024 |  |  |  |  |
Gross carrying amount | $ | 258 |  |  | $ | 18 |  |  | $ | 276 |
Accumulated amortization | (209) |  |  | (16) |  |  | (225) |
Net carrying amount | $ | 49 |  |  | $ | 2 |  |  | $ | 51 |
Schedule of Amortization Expense Recognized | The following table summarizes amortization expense recognized: TABLE 9.3
December 31 | 2025 |  | 2024 |  | 2023
(in millions) |  |  |  |  |
Amortization expense | $ | 16 |  |  | $ | 18 |  |  | $ | 20 |
Schedule of Expected Amortization Expenses on Finite-Lived Intangible Assets | Following is a summary of the expected amortization expense on finite-lived intangible assets, assuming no new additions, for each of the five years following December 31, 2025: TABLE 9.4
(in millions) |
2026 | $ | 12 |
2027 | 8 |
2028 | 6 |
2029 | 4 |
2030 | 3 |
Total | $ | 33 |

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