v3.26.3
Investments - Amortized Cost and Fair Values of Fixed Maturity Securities (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale $ 45,963 $ 44,617
Cost or Amortized Cost, Fixed maturities trading 282 633
Cost or Amortized Cost, Total fixed maturity securities 46,245 45,250
Gross Unrealized Gains 290 1,089
Gross Unrealized Losses 4,169 2,286
Allowance for Credit Losses 65 69
Estimated Fair Value, Fixed maturities available-for-sale 42,019 43,351
Estimated Fair Value, Fixed maturities trading 282 633
Total fixed maturities 42,301 43,984
Corporate and other bonds    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 25,753 25,484
Gross Unrealized Gains 173 682
Gross Unrealized Losses 1,865 881
Allowance for Credit Losses 17 28
Estimated Fair Value, Fixed maturities available-for-sale 24,044 25,257
States, municipalities and political subdivisions    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 9,554 8,870
Gross Unrealized Gains 101 303
Gross Unrealized Losses 1,247 742
Allowance for Credit Losses
Estimated Fair Value, Fixed maturities available-for-sale 8,408 8,431
Residential mortgage-backed    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 4,481 4,011
Gross Unrealized Gains 2 50
Gross Unrealized Losses 612 366
Allowance for Credit Losses
Estimated Fair Value, Fixed maturities available-for-sale 3,871 3,695
Commercial mortgage-backed    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 1,504 1,515
Gross Unrealized Gains 6 18
Gross Unrealized Losses 105 80
Allowance for Credit Losses 21 21
Estimated Fair Value, Fixed maturities available-for-sale 1,384 1,432
Other asset-backed    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 3,636 3,729
Gross Unrealized Gains 7 28
Gross Unrealized Losses 299 194
Allowance for Credit Losses 27 20
Estimated Fair Value, Fixed maturities available-for-sale 3,317 3,543
Asset-backed    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 9,621 9,255
Gross Unrealized Gains 15 96
Gross Unrealized Losses 1,016 640
Allowance for Credit Losses 48 41
Estimated Fair Value, Fixed maturities available-for-sale 8,572 8,670
U.S. Treasury and obligations of government-sponsored enterprises    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 282 236
Gross Unrealized Gains 1
Gross Unrealized Losses 5 3
Allowance for Credit Losses
Estimated Fair Value, Fixed maturities available-for-sale 277 234
Foreign government    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 745 764
Gross Unrealized Gains 1 7
Gross Unrealized Losses 36 20
Allowance for Credit Losses
Estimated Fair Value, Fixed maturities available-for-sale 710 751
Redeemable preferred stock    
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract]    
Cost or Amortized Cost, Fixed maturities available-for-sale 8 8
Gross Unrealized Gains
Gross Unrealized Losses
Allowance for Credit Losses
Estimated Fair Value, Fixed maturities available-for-sale $ 8 $ 8