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Amount of amortization expense attributable to debt issuance costs.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Aggregate amount of interest expense on all borrowings.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Gross amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024	Aug. 20, 2021	Aug. 02, 2021
Debt [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 750.0		$ 750.0		$ 640.0
Other Deferred Costs, Gross	3.6		3.6
Interest and Debt Expense
Debt [Line Items]
Interest expense, long-term debt	24.8	$ 24.4	71.2	$ 67.9
Amortization of debt issuance costs	0.7	$ 0.7	2.1	$ 2.1
Secured Debt \| Combined Credit Agreement \| Revolving Credit Facility
Debt [Line Items]
Long-term debt, term								5 years
Letter of Credit \| Combined Credit Agreement \| Revolving Credit Facility
Debt [Line Items]
Maximum borrowing capacity	$ 14.9		$ 14.9			$ 15.3
Standby Letters of Credit \| Combined Credit Agreement \| Revolving Credit Facility
Debt [Line Items]
Maximum borrowing capacity								$ 50.0
Senior Notes \| 5.625% Notes
Debt [Line Items]
Aggregate principal amount							$ 1,100.0
Interest rate, stated percentage							5.625%