v3.26.3
Segment Information ( Segment Income (Loss) Before Income Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting        
Earned premiums $ 2,690 $ 2,567 $ 7,929 $ 7,391
Fee revenues 6 5 16 15
Investment income, net of expenses 325 295 962 860
Investment gains and losses, net 20 853 1,258 1,259
Total revenues 3,047 3,726 10,184 9,540
Incurred loss and loss expenses 1,675 1,540 5,313 5,168
Investment Interest Credited to Contract Holders 252 227 731 651
Underwriting, acquisition and insurance expenses 799 754 2,349 2,165
Life Insurance Segment        
Segment Reporting        
Earned premiums 85 83 257 246
Incurred loss and loss expenses 80 76 243 230
Operating Segments        
Segment Reporting        
Total revenues 2,781 3,477 9,452 8,850
Operating Segments | Commercial Insurance        
Segment Reporting        
Earned premiums 1,270 1,229 3,762 3,620
Fee revenues 2 2 4 4
Total revenues 1,272 1,231 3,766 3,624
Incurred loss and loss expenses 782 747 2,539 2,249
Underwriting, acquisition and insurance expenses 398 373 1,166 1,080
Income ( Loss) Before Income Taxes 92 111 61 295
Operating Segments | Personal Insurance        
Segment Reporting        
Earned premiums 888 838 2,641 2,340
Fee revenues 1 1 4 4
Total revenues 889 839 2,645 2,344
Incurred loss and loss expenses 564 507 1,809 1,951
Underwriting, acquisition and insurance expenses 237 233 717 665
Income ( Loss) Before Income Taxes 88 99 119 (272)
Operating Segments | Excess and Surplus Lines Insurance        
Segment Reporting        
Earned premiums 187 174 556 510
Fee revenues 1 1 3 3
Total revenues 188 175 559 513
Incurred loss and loss expenses 114 108 342 317
Underwriting, acquisition and insurance expenses 53 48 156 141
Income ( Loss) Before Income Taxes 21 19 61 55
Operating Segments | Life Insurance Segment        
Segment Reporting        
Earned premiums 85 83 257 246
Fee revenues 2 1 5 4
Total revenues 87 84 262 250
Incurred loss and loss expenses 80 76 243 230
Investment Interest Credited to Contract Holders (32) (32) (97) (95)
Underwriting, acquisition and insurance expenses 25 23 73 70
Income ( Loss) Before Income Taxes 14 17 43 45
Operating Segments | Investment Segment        
Segment Reporting        
Investment income, net of expenses 325 295 962 860
Investment gains and losses, net 20 853 1,258 1,259
Total revenues 345 1,148 2,220 2,119
Investment Interest Credited to Contract Holders 32 32 97 95
Income ( Loss) Before Income Taxes $ 313 $ 1,116 $ 2,123 $ 2,024