v3.26.1
Stockholders' Equity - Roll Forward (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance $ 1,606.8 $ 1,603.3 $ 1,548.0 $ 1,586.8 $ 1,603.3 $ 1,586.8
Total comprehensive income 110.8 57.3 55.4 43.4 168.1 98.8
Stock-based compensation expense 9.2 11.7 9.0 10.5    
Proceeds from exercise of stock options and ESPP contributions 1.0 2.5 1.3 1.1    
Taxes withheld and paid on employees' share-based payment awards       (0.5)    
Repurchase of common stock (50.1) (50.0) (32.9) (78.0)    
Common stock dividends (18.6) (18.0) (16.4) (15.3)    
Ending balance $ 1,659.1 $ 1,606.8 $ 1,564.4 $ 1,548.0 $ 1,659.1 $ 1,564.4
Common stock dividend declared (in dollars per share) $ 0.11 $ 0.11 $ 0.09 $ 0.09    
Common stock issued (in shares) 60,468   109,796   1,158,270 597,933
Common Stock            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance $ 1.7 $ 1.7 $ 1.7 $ 1.7 $ 1.7 $ 1.7
Ending balance 1.7 1.7 1.7 1.7 1.7 1.7
Additional paid-in capital            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance 2,806.2 2,810.0 2,824.0 2,828.2 2,810.0 2,828.2
Stock-based compensation expense 9.2 11.7 9.0 10.5    
Proceeds from exercise of stock options and ESPP contributions 1.0 2.5 1.3 1.1    
Taxes withheld and paid on employees' share-based payment awards       (0.5)    
Common stock dividends (18.6) (18.0) (16.4) (15.3)    
Ending balance 2,797.8 2,806.2 2,817.9 2,824.0 2,797.8 2,817.9
Retained deficit            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (1,122.8) (1,131.7) (1,203.1) (1,168.7) (1,131.7) (1,168.7)
Total comprehensive income 113.3 58.9 50.5 43.6    
Repurchase of common stock (50.1) (50.0) (32.9) (78.0)    
Ending balance (1,059.6) (1,122.8) (1,185.5) (1,203.1) (1,059.6) (1,185.5)
Accumulated other comprehensive loss            
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Beginning balance (78.3) (76.7) (74.6) (74.4) (76.7) (74.4)
Total comprehensive income (2.5) (1.6) 4.9 (0.2)    
Ending balance $ (80.8) $ (78.3) $ (69.7) $ (74.6) $ (80.8) $ (69.7)