v3.26.3
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Millions
Total
Common stock
Additional paid-in capital
Retained earnings
Accumulated other comprehensive income (loss), net of tax:
Treasury stock, at cost
Beginning of period at Dec. 31, 2024   $ 0.1 $ 525.2 $ 1,548.2 $ (253.5) $ (532.5)
Increase (Decrease) in Stockholders' Equity            
Options exercised and conversion of common and restricted stock units     3.1      
Share-based compensation expense     7.5      
Net income $ 125.9     125.9    
Dividends, 2026, $0.36 per share; 2025, $0.35 per share       (43.9)    
Change in net unrealized investment gains (losses) on fixed maturity securities         106.6  
Change in net reserve remeasurements attributable to discount rates (31.5)       (31.5)  
Change in net funded status of benefit plans         0.0  
Treasury stock acquired - share repurchase authorization           (13.9)
End of period at Sep. 30, 2025 1,441.3 0.1 535.8 1,630.2 (178.4) (546.4)
Beginning of period at Jun. 30, 2025   0.1 530.4 1,586.5 (217.1) (539.6)
Increase (Decrease) in Stockholders' Equity            
Options exercised and conversion of common and restricted stock units     3.0      
Share-based compensation expense     2.4      
Net income 58.3     58.3    
Dividends, 2026, $0.36 per share; 2025, $0.35 per share       (14.6)    
Change in net unrealized investment gains (losses) on fixed maturity securities         59.1  
Change in net reserve remeasurements attributable to discount rates (20.4)       (20.4)  
Change in net funded status of benefit plans         0.0  
Treasury stock acquired - share repurchase authorization           (6.8)
End of period at Sep. 30, 2025 1,441.3 0.1 535.8 1,630.2 (178.4) (546.4)
Beginning of period at Dec. 31, 2025 1,482.7 0.1 538.8 1,651.7 (154.6) (553.3)
Increase (Decrease) in Stockholders' Equity            
Options exercised and conversion of common and restricted stock units     0.7      
Share-based compensation expense     6.9      
Net income 141.3     141.3    
Dividends, 2026, $0.36 per share; 2025, $0.35 per share       (44.7)    
Change in net unrealized investment gains (losses) on fixed maturity securities         (249.3)  
Change in net reserve remeasurements attributable to discount rates 102.8       102.8  
Change in net funded status of benefit plans         0.0  
Treasury stock acquired - share repurchase authorization           (19.2)
End of period at Sep. 30, 2026 1,421.2 0.1 546.4 1,748.3 (301.1) (572.5)
Beginning of period at Jun. 30, 2026   0.1 544.0 1,704.7 (174.4) (571.5)
Increase (Decrease) in Stockholders' Equity            
Options exercised and conversion of common and restricted stock units     0.1      
Share-based compensation expense     2.3      
Net income 58.5     58.5    
Dividends, 2026, $0.36 per share; 2025, $0.35 per share       (14.9)    
Change in net unrealized investment gains (losses) on fixed maturity securities         (212.9)  
Change in net reserve remeasurements attributable to discount rates 86.2       86.2  
Change in net funded status of benefit plans         0.0  
Treasury stock acquired - share repurchase authorization           (1.0)
End of period at Sep. 30, 2026 $ 1,421.2 $ 0.1 $ 546.4 $ 1,748.3 $ (301.1) $ (572.5)