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Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net Income    
Net income $ 56.9 $ 52.0
Less: net income attributable to the noncontrolling interests (4.3) (3.7)
Net Income (Loss) Attributable to Parent $ 52.6 $ 48.3
Earnings Per Share, Diluted [Abstract]    
Basic 193,000,000.0 192,100,000
Dilutive impact of stock based awards 800,000 1,100,000
Diluted 193,900,000 193,200,000
Earnings Per Share, Basic [Abstract]    
Earnings Per Share, Basic $ 0.27 $ 0.25
Earnings Per Share, Diluted 0.27 0.25
Common Stock, Dividends, Per Share, Cash Paid $ 0.105 $ 0.095
Contingently Issuable Performance-Based Stock Awards    
Earnings Per Share, Basic [Abstract]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 100,000  
Antidilutive Weighted Stock-Based Awards    
Earnings Per Share, Basic [Abstract]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 900,000 100,000