Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Income Taxes - Components of Income before Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Domestic $ 152.5 $ 48.6 $ (2.0)
Foreign 363.9 402.8 466.2
Income before income taxes $ 516.4 $ 451.4 $ 464.2