Long-Term Debt - Aggregate Maturities of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Gross amounts due each year:
2025	$ 79.0
2026	45.4
2027	0.8
2028	0.9
2029	431.1
2030 and thereafter	7.2
Subtotal	564.4
Less amounts representing original issue discount and debt issuance costs	1.0
Total debt	$ 563.4	$ 546.5

Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of long-term debt and lease obligation, including portion classified as current.

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Principal amount of long-term debt and capital lease obligation maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Gross amount of long-term debt and capital lease obligation, including interest on capital leases and discount on other debt obligations.

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