GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Carrying Amount | $ 1,117 | $ 539 |
| Accumulated Amortization | (251) | (394) |
| Net Carrying Value | 866 | 145 |
| Core deposit intangible | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Carrying Amount | 1,041 | 473 |
| Accumulated Amortization | (188) | (335) |
| Net Carrying Value | 853 | 138 |
| Other intangible assets | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Carrying Amount | 76 | 66 |
| Accumulated Amortization | (63) | (59) |
| Net Carrying Value | $ 13 | $ 7 |
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- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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