v3.26.1
Fair Value - Financial Assets and Liabilities not Measured at Fair Value (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Carrying Amount    
Assets:    
Other invested assets, primarily mortgage loans $ 1,037 $ 1,079
Liabilities:    
Short-term debt 22 1,051
Long-term debt 8,914 8,435
Estimated Fair Value    
Assets:    
Other invested assets, primarily mortgage loans 1,020 1,072
Liabilities:    
Short-term debt 22 1,053
Long-term debt 8,790 8,426
Estimated Fair Value | Level 1    
Assets:    
Other invested assets, primarily mortgage loans
Liabilities:    
Short-term debt
Long-term debt
Estimated Fair Value | Level 2    
Assets:    
Other invested assets, primarily mortgage loans
Liabilities:    
Short-term debt 1,051
Long-term debt 7,818 7,431
Estimated Fair Value | Level 3    
Assets:    
Other invested assets, primarily mortgage loans 1,020 1,072
Liabilities:    
Short-term debt 22 2
Long-term debt $ 972 $ 995