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Income Taxes - Schedule of Income Before Income Tax Domestic and Foreign (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Domestic $ (63.9) $ (77.2) $ (1.8)
Foreign 101.6 105.5 67.8
Income from continuing operations before income taxes $ 37.7 $ 28.3 $ 66.0