Long-Term Debt - Aggregate Maturities of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Longterm Debt Aggregate Maturities Of Long Term Debt [Abstract]
2022	$ 3.1
2023	175.8
2024	2.0
2025	454.3
2026	2.2
2027 and thereafter	19.7
Subtotal	657.1
Less amounts representing original issue discount and debt issuance costs	(4.1)
Total long-term debt	$ 653.0	$ 788.6

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 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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Disclosure longterm debt aggregate maturities of long term debt.

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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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