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Earnings Per Share - Computation of Basic and Diluted Net EPS (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Earnings Per Share [Abstract]        
Net earnings attributable to controlling interests $ 280.7 $ 255.8 $ 1,001.7 $ 978.7
Weighted average number of common shares outstanding 215.7 210.7 214.5 210.0
Dilutive effect of stock options using the treasury stock method 4.5 4.3 4.3 4.3
Weighted average number of common and common equivalent shares outstanding 220.2 215.0 218.8 214.3
Basic net earnings per share $ 1.3 $ 1.21 $ 4.67 $ 4.66
Diluted net earnings per share $ 1.28 $ 1.19 $ 4.58 $ 4.57