Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
Aug. 31, 2025 |
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| Finite-Lived Intangible Assets [Line Items] | ||||
| Goodwill | $ 1,482,000,000 | $ 1,482,000,000 | ||
| Finite-Lived Intangible Asset, Useful Life | 10 years | |||
| Goodwill and Intangible Asset Impairment | $ 0 | $ 0 | ||
| Intangible amortization | $ 41,000,000 | $ 28,000,000 | ||
| Columbia Banking Systems and Pacific Premier Bancorp Merger | ||||
| Finite-Lived Intangible Assets [Line Items] | ||||
| Goodwill | $ 453,000,000 | |||
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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, 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/exampleRef
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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. No definition available.
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- Details
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