Short-term Borrowings/Other Borrowings - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Credit limit	$ 724.4
Federal Home Loan Bank:
Short-term Debt [Line Items]
Collateral pledged	2.0	$ 2.1
Short-term borrowings	228.1	230.1
Federal Reserve Bank:
Short-term Debt [Line Items]
Collateral pledged	3.8	4.1
Short-term borrowings	$ 633.1	$ 604.0

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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