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Goodwill and Core Deposit Intangibles - Goodwill Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Jul. 01, 2023
Jul. 01, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Goodwill [Line Items]          
Impairment of goodwill $ 0.0 $ 0.0      
Reductions due to sale of health savings accounts     $ 14.6 $ 15.7 $ 15.9