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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Tax Credit Carryforward [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance |  | $ 10.8 | $ 5.4
Unrecognized tax benefits , if recognized, would favorably impact effective tax rate |  | 70.0 |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued |  | 0.4 |
Deferred Tax Assets, Tax Credit Carryforwards |  | 10.1 | 13.5
Deferred Income Tax Assets, Net | [1] | 0.6 | 2.2
Deferred tax liabilities and other long-term obligations |  | 142.7 | 149.9
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit |  | 68.4 |
Deferred Tax Liabilities, Other |  | 0.0 | 0.6
Deferred Tax Liabilities, Tax Deferred Expense, Compensation and Benefits Pension and Other Postretirement Benefits |  | 0.0 | $ (1.5)
Valuation allowances, State Tax Credits [Member] |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | $ 2.7 |
[1] | Included in "Other assets, net" on our accompanying December 31, 2022 and 2021 Consolidated Balance Sheets.

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