v3.26.1
Segment Information ( Segment Income (Loss) Before Income Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting        
Earned premiums $ 2,635 $ 2,480 $ 5,239 $ 4,824
Fee revenues 5 5 10 10
Investment income, net of expenses 319 285 637 565
Investment gains and losses, net 1,308 473 1,238 406
Total revenues 4,274 3,248 7,137 5,814
Incurred loss and loss expenses 1,887 1,660 3,638 3,628
Investment Interest Credited to Contract Holders 244 214 479 424
Underwriting, acquisition and insurance expenses 786 709 1,550 1,411
Life Insurance Segment        
Segment Reporting        
Earned premiums 87 83 172 163
Incurred loss and loss expenses 79 73 163 154
Operating Segments        
Segment Reporting        
Total revenues 4,039 3,036 6,671 5,373
Operating Segments | Commercial Insurance        
Segment Reporting        
Earned premiums 1,251 1,212 2,492 2,391
Fee revenues 1 0 2 2
Total revenues 1,252 1,212 2,494 2,393
Incurred loss and loss expenses 910 767 1,757 1,502
Underwriting, acquisition and insurance expenses 391 358 768 707
Income ( Loss) Before Income Taxes (49) 87 (31) 184
Operating Segments | Personal Insurance        
Segment Reporting        
Earned premiums 880 804 1,753 1,502
Fee revenues 1 2 3 3
Total revenues 881 806 1,756 1,505
Incurred loss and loss expenses 638 598 1,245 1,444
Underwriting, acquisition and insurance expenses 242 222 480 432
Income ( Loss) Before Income Taxes 1 (14) 31 (371)
Operating Segments | Excess and Surplus Lines Insurance        
Segment Reporting        
Earned premiums 189 174 369 336
Fee revenues 1 1 2 2
Total revenues 190 175 371 338
Incurred loss and loss expenses 118 110 228 209
Underwriting, acquisition and insurance expenses 53 49 103 93
Income ( Loss) Before Income Taxes 19 16 40 36
Operating Segments | Life Insurance Segment        
Segment Reporting        
Earned premiums 87 83 172 163
Fee revenues 2 2 3 3
Total revenues 89 85 175 166
Incurred loss and loss expenses 79 73 163 154
Investment Interest Credited to Contract Holders (33) (31) (65) (63)
Underwriting, acquisition and insurance expenses 25 24 48 47
Income ( Loss) Before Income Taxes 18 19 29 28
Operating Segments | Investment Segment        
Segment Reporting        
Investment income, net of expenses 319 285 637 565
Investment gains and losses, net 1,308 473 1,238 406
Total revenues 1,627 758 1,875 971
Investment Interest Credited to Contract Holders 33 31 65 63
Income ( Loss) Before Income Taxes $ 1,594 $ 727 $ 1,810 $ 908