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Components of Income Tax Expense (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Tax Expense Benefit [Line Items]      
Taxes on income $ 131.4 $ 134.0 $ 124.2
Domestic Tax Authority      
Income Tax Expense Benefit [Line Items]      
Current 117.7 130.9 112.0
Deferred (1.3) (1.1) 0.8
Domestic 116.4 129.8 112.8
U.S.      
Income Tax Expense Benefit [Line Items]      
Foreign taxes, Current 12.7 7.1 1.7
Foreign taxes, Deferred 2.3 (2.9) 9.7
Foreign $ 15.0 $ 4.2 $ 11.4