v3.26.3
Fair Value - Financial Assets and Liabilities not Measured at Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Carrying Amount    
Assets:    
Other invested assets, primarily mortgage loans $ 1,009 $ 1,079
Liabilities:    
Short-term debt 521 1,051
Long-term debt 8,417 8,435
Estimated Fair Value    
Assets:    
Other invested assets, primarily mortgage loans 972 1,072
Liabilities:    
Short-term debt 515 1,053
Long-term debt 7,960 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 493 1,051
Long-term debt 6,999 7,431
Estimated Fair Value | Level 3    
Assets:    
Other invested assets, primarily mortgage loans 972 1,072
Liabilities:    
Short-term debt 22 2
Long-term debt $ 961 $ 995