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Pension - Schedule of Projected Benefit Obligations Amounts Recognized in Consolidated Balance Sheets (Detail) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Amounts Recognized in the Consolidated Balance Sheets
Long-term assets	$ 15.6	$ 11.7
Current liabilities	(0.6)	(0.5)
Long-term liabilities	(7.0)	(5.5)
Funded Status at End of Year	$ 8.0	$ 5.7

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Amounts Recognized in the Consolidated Balance Sheets

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Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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