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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Retained Earnings
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
BALANCE (in shares) at Dec. 31, 2017     25,515,374          
BALANCE at Dec. 31, 2017 $ 1,124.3 $ 11.4 $ 0.3 $ 291.5 $ 1,246.3 $ 11.4 $ (123.2) $ (290.5)
Net income (loss) 157.8       157.8      
Other comprehensive income (loss), net of taxes (14.4)           (14.4)  
Tax effects reclassified from accumulated other comprehensive income 0.0       0.2   (0.2)  
Purchases of treasury stock (183.9)             (183.9)
Net issuance of treasury shares to employee stock compensation plans (in shares)     (21,046)          
Net issuance of treasury shares to stock compensation plans 2.7     (17.4)       20.1
Stock-based compensation 18.7     18.7        
Cash dividends, net of estimated forfeitures related to participating securities (20.8)       (20.8)      
BALANCE (in shares) at Dec. 31, 2018     25,494,328          
BALANCE at Dec. 31, 2018 1,095.7 $ (6.1) $ 0.3 292.8 1,394.8 $ (6.1) (137.8) (454.4)
Net income (loss) 174.0       174.0      
Other comprehensive income (loss), net of taxes (9.2)           (9.2)  
Purchases of treasury stock (1.4)             (1.4)
Net issuance of treasury shares to employee stock compensation plans (in shares)     (7,617)          
Net issuance of treasury shares to stock compensation plans 4.2     (16.3)       20.5
Stock-based compensation 18.8     18.8        
Cash dividends, net of estimated forfeitures related to participating securities (20.3)       (20.3)      
BALANCE (in shares) at Dec. 31, 2019     25,486,711          
BALANCE at Dec. 31, 2019 1,255.7   $ 0.3 295.3 1,542.4   (147.0) (435.3)
Net income (loss) 286.5       286.5      
Other comprehensive income (loss), net of taxes (37.1)           (37.1)  
Purchases of treasury stock (80.2)             (80.2)
Net issuance of treasury shares to employee stock compensation plans (in shares)     (53,663)          
Net issuance of treasury shares to stock compensation plans 3.3     (19.4)       22.7
Stock-based compensation 32.3     32.3        
Cash dividends, net of estimated forfeitures related to participating securities (11.0)       (11.0)      
BALANCE (in shares) at Dec. 31, 2020     25,433,048          
BALANCE at Dec. 31, 2020 $ 1,449.6   $ 0.3 $ 308.3 $ 1,817.9   $ (184.0) $ (492.8)