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v3.23.2

Intangible Assets, Goodwill and Other (Narrative) (Details) - USD ($) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2023 | Feb. 28, 2023 | Dec. 31, 2022
Goodwill [Line Items] |  |  |
Goodwill | $ 1,029,234,000 |  | $ 0
Finite-Lived Intangible Asset, Useful Life | 10 years |  |
Goodwill and Intangible Asset Impairment | $ 0 |  |
Umpqua Bank and Columbia Banking System Merger |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  | $ 1,029,234,000 |

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