Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income before Income Taxes (Detail)

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Income Taxes - Components of Income before Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Domestic $ (94.1) $ (72.0) $ 53.4
Foreign 297.1 496.8 507.4
Income before income taxes $ 203.0 $ 424.8 $ 560.8