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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2020 $ 1,615.8 $ 1.3 $ 1,046.5 $ 600.7 $ (32.7)
Beginning balance (in shares) at Dec. 31, 2020   129,700,000      
Increase (Decrease) in Stockholders' Equity          
Net income (loss) 66.5     66.5  
Other comprehensive income (loss) 8.0       8.0
Issuance of common stock under stock plans 1.5   1.5    
Issuance of common stock under stock plans (in shares)   500,000      
Issuance of common stock - private placement 30.0   30.0    
Issuance of common stock - private placement (in shares)   2,000,000.0      
Surrender of RSUs for taxes (2.2)   (2.2)    
Surrender of RSUs for taxes (in shares)   (200,000)      
Stock-based compensation expense 15.6   15.6    
Repurchase and retirement of common stock (180.9) $ (0.1) (180.8)    
Repurchase and retirement of common stock (in shares)   (10,800,000)      
Dividends earned under stock plans (0.2)   0.2 (0.4)  
Dividends on preferred stock (41.1)     (41.1)  
Ending balance at Dec. 31, 2021 1,513.0 $ 1.2 910.8 625.7 (24.7)
Ending balance (in shares) at Dec. 31, 2021   121,200,000      
Increase (Decrease) in Stockholders' Equity          
Net income (loss) 241.2     241.2  
Other comprehensive income (loss) (24.8)       (24.8)
Issuance of common stock under stock plans 1.4   1.4    
Issuance of common stock under stock plans (in shares)   500,000      
Surrender of RSUs for taxes (2.7)   (2.7)    
Surrender of RSUs for taxes (in shares)   (200,000)      
Stock-based compensation expense 16.3   16.3    
Repurchase and retirement of common stock (182.2) $ (0.1) (182.1)    
Repurchase and retirement of common stock (in shares)   (12,600,000)      
Dividends earned under stock plans (0.1)   0.1 (0.2)  
Dividends on preferred stock (43.8)     (43.8)  
Ending balance at Dec. 31, 2022 $ 1,518.3 $ 1.1 743.8 822.9 (49.5)
Ending balance (in shares) at Dec. 31, 2022 108,914,678 108,900,000      
Increase (Decrease) in Stockholders' Equity          
Net income (loss) $ (154.1)     (154.1)  
Other comprehensive income (loss) 12.8       12.8
Issuance of common stock under stock plans 2.7   2.7    
Issuance of common stock under stock plans (in shares)   700,000      
Surrender of RSUs for taxes (2.6)   (2.6)    
Surrender of RSUs for taxes (in shares)   (200,000)      
Stock-based compensation expense 16.5   16.5    
Repurchase and retirement of common stock (22.2)   (22.2)    
Repurchase and retirement of common stock (in shares)   (1,400,000)      
Dividends on preferred stock (44.4)     (44.4)  
Ending balance at Dec. 31, 2023 $ 1,327.0 $ 1.1 $ 738.2 $ 624.4 $ (36.7)
Ending balance (in shares) at Dec. 31, 2023 108,040,704 108,000,000.0