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Acquisition and Divestiture Activity (Details) - USD ($) $ in Millions |  | 6 Months Ended
--- | --- | ---
Nov. 18, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Business Acquisition [Line Items] |  |  |
Deposits, health savings accounts | $ 382.0 |  |
Gain on sale of health savings accounts business | $ 90.7 |  |
First Midwest |  |  |
Business Acquisition [Line Items] |  |  |
Transaction costs, expensed |  | $ 16.9 | $ 77.9

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