ACQUISITIONS (Narrative) (Details) $ in Thousands, shares in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
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Apr. 01, 2025
USD ($)
item
shares
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Jun. 30, 2026
USD ($)
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Mar. 31, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Mar. 31, 2025
USD ($)
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Jun. 30, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Dec. 31, 2025
USD ($)
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| Business Acquisition [Line Items] | ||||||||
| Purchase price consideration | $ 1,275,247 | |||||||
| Goodwill | $ 1,754,875 | $ 1,754,875 | $ 1,733,287 | |||||
| Merger-related costs | $ 0 | $ 78,900 | $ 9,034 | $ 83,840 | ||||
| Sandy Spring | ||||||||
| Business Acquisition [Line Items] | ||||||||
| Conversion ratio | 0.9 | |||||||
| Additional shares issued | shares | 41.0 | |||||||
| Purchase price consideration | $ 1,275,969 | |||||||
| Number of branches acquired | item | 50 | |||||||
| Goodwill | $ 540,821 | $ 540,800 | ||||||
| Accretion expense | $ 21,000 | |||||||
| Merger-related costs | $ 4,600 | |||||||
| Sandy Spring | Wholesale Banking | ||||||||
| Business Acquisition [Line Items] | ||||||||
| Goodwill | 431,700 | |||||||
| Goodwill, measurement period adjustments | 26,700 | |||||||
| Sandy Spring | Consumer Banking | ||||||||
| Business Acquisition [Line Items] | ||||||||
| Goodwill | $ 109,100 | |||||||
| X | ||||||||||
- Definition Ratio of stock converted from the acquiree to the acquirer's stock in a business combination. No definition available.
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| X | ||||||||||
- Definition The number of branches of a business acquired by the entity during the period. No definition available.
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| X | ||||||||||
- Definition Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount of increase (decrease) from measurement period adjustment 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/2009/role/commonPracticeRef
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