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Shareholders' Equity - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Equity, Class of Treasury Stock [Line Items]    
Additional shares authorized $ 1,109.3  
Repurchase and retirement of common stock $ 2.4 $ 16.0
Cash dividend paid during period, per share (in dollars per share) $ 0.67 $ 0.66
Common stock excluded from calculation of diluted earnings per share (shares) 3.2 2.0
Stock Options and Certain Share-based Compensation Awards    
Equity, Class of Treasury Stock [Line Items]    
Common stock excluded from calculation of diluted earnings per share (shares) 0.2  
Common Stock    
Equity, Class of Treasury Stock [Line Items]    
Repurchase and retirement of common stock (shares) 0.1 0.2