v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2024   41,649,426        
Beginning balance at Dec. 31, 2024 $ 3,502.1 $ 0.4 $ 1,305.1 $ 3,218.9 $ (1,079.2) $ 56.8
Treasury stock, beginning balance (in shares) at Dec. 31, 2024         22,065,478  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 132.1     132.1    
Change in fair value of cash flow swaps, net of reclassification adjustment (10.3)         (10.3)
Unrealized gain on changes in fair value of debt securities, net of reclassification adjustment and tax expense 3.0         3.0
Income tax benefit (expense) associated with available-for-sale debt securities 124.9     132.1   (7.2)
Share-based compensation 9.1   9.1      
Issuance of common stock, net of forfeitures in connection with share-based payment arrangements (in shares)   117,992        
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         42,780  
Repurchase of common stock associated with net share settlement of employee share-based awards (12.5)       $ (12.5)  
Ending balance (in shares) at Mar. 31, 2025   41,767,418        
Ending balance at Mar. 31, 2025 3,623.5 $ 0.4 1,314.2 3,351.0 $ (1,091.7) 49.6
Treasury stock, ending balance (in shares) at Mar. 31, 2025         22,108,258  
Beginning balance (in shares) at Dec. 31, 2024   41,649,426        
Beginning balance at Dec. 31, 2024 3,502.1 $ 0.4 1,305.1 3,218.9 $ (1,079.2) 56.8
Treasury stock, beginning balance (in shares) at Dec. 31, 2024         22,065,478  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 284.9          
Income tax benefit (expense) associated with available-for-sale debt securities $ 272.3          
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         43,426  
Repurchase of common stock associated with net share settlement of employee share-based awards         $ (12.7)  
Repurchase and retirement of common stock (in shares) 0          
Ending balance (in shares) at Jun. 30, 2025   41,768,966        
Ending balance at Jun. 30, 2025 $ 3,777.0 $ 0.4 1,320.4 3,503.7 $ (1,091.8) 44.3
Treasury stock, ending balance (in shares) at Jun. 30, 2025         22,108,904  
Beginning balance (in shares) at Mar. 31, 2025   41,767,418        
Beginning balance at Mar. 31, 2025 3,623.5 $ 0.4 1,314.2 3,351.0 $ (1,091.7) 49.6
Treasury stock, beginning balance (in shares) at Mar. 31, 2025         22,108,258  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 152.8     152.8    
Change in fair value of cash flow swaps, net of reclassification adjustment (6.3)         (6.3)
Unrealized gain on changes in fair value of debt securities, net of reclassification adjustment and tax expense 1.0         1.0
Income tax benefit (expense) associated with available-for-sale debt securities 147.5     152.8   (5.3)
Share-based compensation 6.2   6.2      
Issuance of common stock, net of forfeitures in connection with share-based payment arrangements (in shares)   1,548        
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         646  
Repurchase of common stock associated with net share settlement of employee share-based awards $ (0.2)       $ (0.2)  
Repurchase and retirement of common stock (in shares) 0          
Ending balance (in shares) at Jun. 30, 2025   41,768,966        
Ending balance at Jun. 30, 2025 $ 3,777.0 $ 0.4 1,320.4 3,503.7 $ (1,091.8) 44.3
Treasury stock, ending balance (in shares) at Jun. 30, 2025         22,108,904  
Beginning balance (in shares) at Dec. 31, 2025   41,338,419        
Beginning balance at Dec. 31, 2025 $ 3,891.9 $ 0.4 1,327.6 3,616.2 $ (1,092.8) 40.6
Treasury stock, beginning balance (in shares) at Dec. 31, 2025 22,109,690       22,109,690  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income $ 187.8     187.8    
Change in fair value of cash flow swaps, net of reclassification adjustment 1.3         1.3
Unrealized gain on changes in fair value of debt securities, net of reclassification adjustment and tax expense (3.3)         (3.3)
Income tax benefit (expense) associated with available-for-sale debt securities 185.8     187.8   (2.0)
Share-based compensation 11.1   11.1      
Issuance of common stock, net of forfeitures in connection with share-based payment arrangements (in shares)   104,412        
Shares repurchased (in shares)         (678,243)  
Share repurchases (147.0)       $ (147.0)  
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         37,420  
Repurchase of common stock associated with net share settlement of employee share-based awards (9.8)       $ (9.8)  
Repurchase and retirement of common stock (in shares)   (678,243)     (678,243)  
Retirement of common stock 0.0   (8.2) (138.8) $ 147.0  
Ending balance (in shares) at Mar. 31, 2026   40,764,588        
Ending balance at Mar. 31, 2026 3,932.1 $ 0.4 1,330.5 3,665.2 $ (1,102.6) 38.5
Treasury stock, ending balance (in shares) at Mar. 31, 2026         22,147,110  
Beginning balance (in shares) at Dec. 31, 2025   41,338,419        
Beginning balance at Dec. 31, 2025 $ 3,891.9 $ 0.4 1,327.6 3,616.2 $ (1,092.8) 40.6
Treasury stock, beginning balance (in shares) at Dec. 31, 2025 22,109,690       22,109,690  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income $ 302.4          
Income tax benefit (expense) associated with available-for-sale debt securities $ 302.8          
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         38,237  
Repurchase of common stock associated with net share settlement of employee share-based awards         $ (9.9)  
Repurchase and retirement of common stock (in shares) (1,346,359)          
Ending balance (in shares) at Jun. 30, 2026   40,099,276        
Ending balance at Jun. 30, 2026 $ 3,923.2 $ 0.4 1,328.5 3,657.3 $ (1,104.0) 41.0
Treasury stock, ending balance (in shares) at Jun. 30, 2026 22,147,927       22,147,927  
Beginning balance (in shares) at Mar. 31, 2026   40,764,588        
Beginning balance at Mar. 31, 2026 $ 3,932.1 $ 0.4 1,330.5 3,665.2 $ (1,102.6) 38.5
Treasury stock, beginning balance (in shares) at Mar. 31, 2026         22,147,110  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 114.6     114.6    
Change in fair value of cash flow swaps, net of reclassification adjustment 3.5         3.5
Unrealized gain on changes in fair value of debt securities, net of reclassification adjustment and tax expense (1.1)         (1.1)
Income tax benefit (expense) associated with available-for-sale debt securities 117.0     114.6   2.4
Share-based compensation 6.1   6.1      
Issuance of common stock, net of forfeitures in connection with share-based payment arrangements (in shares)   2,804        
Shares repurchased (in shares)         (668,116)  
Share repurchases (131.9)       $ (131.9)  
Repurchase of common stock associated with net share settlement of employee share-based awards (in shares)         817  
Repurchase of common stock associated with net share settlement of employee share-based awards $ (0.1)       $ (0.1)  
Repurchase and retirement of common stock (in shares) (668,116) (668,116)     (668,116)  
Retirement of common stock $ 0.0   (8.1) (122.5) $ 130.6  
Ending balance (in shares) at Jun. 30, 2026   40,099,276        
Ending balance at Jun. 30, 2026 $ 3,923.2 $ 0.4 $ 1,328.5 $ 3,657.3 $ (1,104.0) $ 41.0
Treasury stock, ending balance (in shares) at Jun. 30, 2026 22,147,927       22,147,927