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Available-For-Sale Securities (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($) Securities	Dec. 31, 2023 USD ($) Securities
Available-for-Sale Securities [Line Items]
Fair value of securities pledged as collateral	$ 147.4	$ 89.7
Securities delivered for repurchase agreements	18.4	19.7
Total fair value of investments	$ 210.3	$ 217.0
Number of securities (in Securities) | Securities	135	139
Fair value of investments, percentage	99.00%
Available-for-sale investment portfolio, percentage		99.00%
Available-for-sale debt securities	$ 0.6	$ 0.7

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Percentage of investment in available for sale securities.

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Available-for-sale investment portfolio percentage.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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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.

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The carrying value of securities purchased to be resold in reverse repurchase transactions as of the balance sheet date.

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The carrying amount (fair value) as of the balance sheet date of securities held that had been pledged by counterparties under financing and lending arrangements, pursuant to which the entity has the right by agreement or custom to sell or re-pledge such securities.

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