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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Beginning balance at Dec. 31, 2021 $ 1,825.2 $ 0.3 $ 325.8 $ 2,345.9 $ (156.2) $ (690.4)
Beginning balance (in shares) at Dec. 31, 2021   25,336,054        
Increase (Decrease) in Stockholders' Equity            
Net income 751.5     751.5    
Other comprehensive (loss) income, net of taxes 178.7       178.7  
Purchases of treasury stock, including excise tax (521.2)         (521.2)
Net issuance of treasury shares to stock compensation plans 0.1   (14.1)     14.2
Net issuance of treasury shares to stock compensation plans (in shares)   (103,434)        
Stock-based compensation 27.0   27.0      
Dividends declared (23.9)     (23.9)    
Ending balance at Dec. 31, 2022 2,237.5 $ 0.3 338.7 3,073.6 22.5 (1,197.5)
Ending balance (in shares) at Dec. 31, 2022   25,232,620        
Increase (Decrease) in Stockholders' Equity            
Net income 601.6     601.6    
Other comprehensive (loss) income, net of taxes 5.7       5.7  
Purchases of treasury stock, including excise tax (174.2)         (174.2)
Net issuance of treasury shares to stock compensation plans 9.2   (9.7)     18.9
Net issuance of treasury shares to stock compensation plans (in shares)   (101,160)        
Stock-based compensation 20.1   20.1      
Dividends declared (25.4)     (25.4)    
Ending balance at Dec. 31, 2023 2,674.4 $ 0.3 349.1 3,649.8 28.1 (1,352.8)
Ending balance (in shares) at Dec. 31, 2023   25,131,460        
Increase (Decrease) in Stockholders' Equity            
Net income 498.1     498.1    
Other comprehensive (loss) income, net of taxes (26.5)       (26.5)  
Purchases of treasury stock, including excise tax (163.0)         (163.0)
Net issuance of treasury shares to stock compensation plans (8.6)   (18.2)     9.6
Net issuance of treasury shares to stock compensation plans (in shares)   (141,653)        
Stock-based compensation 25.2   25.2      
Dividends declared (25.5)     (25.5)    
Ending balance at Dec. 31, 2024 $ 2,974.3 $ 0.2 $ 356.1 $ 4,122.4 $ 1.6 $ (1,506.2)
Ending balance (in shares) at Dec. 31, 2024   24,989,807