v3.26.3
Consolidated Statements of Shareholders' Equity - USD ($)
$ in Millions
Total
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Net Unrealized Appreciation (Depreciation) on Investments [Member]
Net Unrealized Appreciation (Depreciation) on Investments [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Defined Benefit Pension and Postretirement Plans [Member]
Defined Benefit Pension and Postretirement Plans [Member]
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Long Duration Insurance Contracts [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Adjustment [Member]
Retained Earnings [Member]
Adjusted Balance [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]
Treasury Stock [Member]
Balance at beginning of period at Dec. 31, 2024     $ 0.0 $ 0.6 $ 1,973.6 $ (403.5)   $ (55.2)   $ 2.4 $ 3,209.6 $ 1.9 $ 3,211.5   $ (1,885.7)
Net income $ 464.0 $ (38.4)         $ (34.6)       464.0        
Shares purchased at cost                             (74.9)
Employee and director stock-based awards and other         31.0                    
Net appreciation (depreciation) on available-for-sale securities 255.9         255.9                  
Income from continuing operations 463.7           34.2   $ 4.0            
Net change in market risk (1.9)                 (1.9)          
Dividends to shareholders                     (98.2)        
Net shares reissued at cost under employee stock-based compensation plans and other                             2.7
Balance at end of period at Sep. 30, 2025 3,426.3   0.0 0.6 2,004.6 (147.6)   (51.2)   0.5 3,577.3     $ (198.3) (1,957.9)
Balance at beginning of period at Jun. 30, 2025     0.0 0.6 1,993.9 (236.0)   (52.5)   1.3 3,431.2 0.0 3,431.2   (1,922.2)
Net income 178.7 (17.5)         (16.2)       178.7        
Shares purchased at cost                             (36.3)
Employee and director stock-based awards and other         10.7                    
Net appreciation (depreciation) on available-for-sale securities 88.4         88.4                  
Income from continuing operations 178.6           16.0   1.3            
Net change in market risk (0.8)                 (0.8)          
Dividends to shareholders                     (32.6)        
Net shares reissued at cost under employee stock-based compensation plans and other                             0.6
Balance at end of period at Sep. 30, 2025 3,426.3   0.0 0.6 2,004.6 (147.6)   (51.2)   0.5 3,577.3     (198.3) (1,957.9)
Balance at beginning of period at Dec. 31, 2025 3,571.5   0.0 0.6 2,013.5 (116.3)   (54.3)   (0.8) 3,741.6 0.0 3,741.6   (2,012.8)
Net income 551.0 (21.4)         (17.8)       551.0        
Shares purchased at cost                             (230.0)
Employee and director stock-based awards and other         33.2                    
Net appreciation (depreciation) on available-for-sale securities (389.2)         (389.2)                  
Income from continuing operations 550.5           17.6   4.1            
Net change in market risk 3.4                 3.4          
Dividends to shareholders                     (100.9)        
Net shares reissued at cost under employee stock-based compensation plans and other                             (1.6)
Balance at end of period at Sep. 30, 2026 3,441.5   0.0 0.6 2,046.7 (505.5)   (50.2)   2.6 4,191.7     (553.1) (2,244.4)
Balance at beginning of period at Jun. 30, 2026     0.0 0.6 2,032.0 (203.9)   (51.6)   (0.2) 4,052.5 $ 0.0 $ 4,052.5   (2,156.9)
Net income 172.6 $ (8.9)         (7.6)       172.6        
Shares purchased at cost                             (87.1)
Employee and director stock-based awards and other         14.7                    
Net appreciation (depreciation) on available-for-sale securities (301.6)         (301.6)                  
Income from continuing operations 172.3           $ 7.6   $ 1.4            
Net change in market risk 2.8                 2.8          
Dividends to shareholders                     (33.4)        
Net shares reissued at cost under employee stock-based compensation plans and other                             (0.4)
Balance at end of period at Sep. 30, 2026 $ 3,441.5   $ 0.0 $ 0.6 $ 2,046.7 $ (505.5)   $ (50.2)   $ 2.6 $ 4,191.7     $ (553.1) $ (2,244.4)