BUSINESS COMBINATIONS - Schedule of Business Acquisitions - BMO Acquisition (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Sep. 04, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|---|
| Liabilities | ||||
| Goodwill | $ 418 | $ 346 | $ 346 | |
| BMO Bank | ||||
| Business Combination [Line Items] | ||||
| Deposit premium paid | $ (262) | |||
| Assets | ||||
| Cash | 23 | |||
| Interest-earning deposits at banks | 4,109 | |||
| Loans, net of ALLL | 638 | |||
| Premises and equipment | 92 | |||
| Other assets | 18 | |||
| Total acquired assets | 5,072 | |||
| Liabilities | ||||
| Deposits | 4,861 | |||
| Other liabilities | 21 | |||
| Total assumed liabilities | 4,882 | |||
| Net assets | 190 | |||
| Goodwill | 72 | |||
| BMO Bank | Core Deposits | ||||
| Assets | ||||
| Core deposit intangibles | $ 192 |
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- Definition Business Combination, Interest-Bearing Deposits in Banks and Other Financial Institutions No definition available.
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- Definition Business Combination, Recognized Asset Acquired, Deposit Premium No definition available.
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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financing Receivable, Net Of Allowance for Loan and Lease Losses No definition available.
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- Definition Business Combination, Recognized Liability Assumed, Deposits No definition available.
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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/2003/role/exampleRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of cash and cash equivalent acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of identifiable intangible asset acquired in business combination and recognized at acquisition date. Excludes goodwill and financial asset. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of asset acquired in excess of (less than) liability assumed in business combination and recognized at acquisition date. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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