v3.26.3
Shareholders' Equity (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Dec. 15, 2025
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Dec. 31, 2025
Stockholders Equity Note Disclosure [Line Items]                  
Share repurchase (in shares)               4.0  
Share repurchases     $ 150.0 $ 200.0 $ 50.0 $ 75.0 $ 50.0 $ 350.0  
Dividends (in dollars per share)   $ 0.27 $ 0.27   $ 0.25 $ 0.25      
Dividends payable   $ 43.0           43.0 $ 44.1
December 2025 Share Repurchase Program                  
Stockholders Equity Note Disclosure [Line Items]                  
Share repurchase program, authorized amount $ 1,000.0                
Share repurchase program remaining available amount   $ 650.0           $ 650.0  
Common stock authorized for repurchase, expiration date Dec. 31, 2028