XML 49 R38.htm IDEA: XBRL DOCUMENT v3.24.3
Investments (Summary of fixed maturity and equity securities) (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost $ 43,551   $ 42,414      
Gross Unrealized Gains 1,282   1,022      
Gross Unrealized Losses 2,236   2,995      
Allowance for Credit Losses 18 $ 17 16 $ 18 $ 22 $ 1
Estimated Fair Value 42,579   40,425      
Debt Securities, Trading, Unrealized Gain (Loss) [Abstract]            
Total fixed maturity securities trading 0   0      
Total fixed maturity securities trading 0   0      
Debt securities, amortized cost 43,551   42,414      
Total fixed maturity securities 42,579   40,425      
Corporate and other bonds            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 25,872   25,020      
Gross Unrealized Gains 826   597      
Gross Unrealized Losses 900   1,345      
Allowance for Credit Losses 6 0 4 5 13 0
Estimated Fair Value 25,792   24,268      
Debt Securities, Trading, Unrealized Gain (Loss) [Abstract]            
Total fixed maturity securities 26,751   25,132      
States, municipalities and political subdivisions            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 7,406   7,713      
Gross Unrealized Gains 359   382      
Gross Unrealized Losses 617   703      
Allowance for Credit Losses 0   0      
Estimated Fair Value 7,148   7,392      
Debt Securities, Trading, Unrealized Gain (Loss) [Abstract]            
Total fixed maturity securities 7,148   7,392      
Residential mortgage-backed            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 3,684   3,411      
Gross Unrealized Gains 32   16      
Gross Unrealized Losses 362   425      
Allowance for Credit Losses 0   0      
Estimated Fair Value 3,354   3,002      
Commercial mortgage-backed            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 1,867   1,862      
Gross Unrealized Gains 15   7      
Gross Unrealized Losses 141   230      
Allowance for Credit Losses 0   8      
Estimated Fair Value 1,741   1,631      
Other asset-backed            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 3,743   3,515      
Gross Unrealized Gains 40   13      
Gross Unrealized Losses 186   256      
Allowance for Credit Losses 12   4      
Estimated Fair Value 3,585   3,268      
Asset-backed            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 9,294   8,788      
Gross Unrealized Gains 87   36      
Gross Unrealized Losses 689   911      
Allowance for Credit Losses 12 $ 17 12 $ 13 $ 9 $ 1
Estimated Fair Value 8,680   7,901      
Debt Securities, Trading, Unrealized Gain (Loss) [Abstract]            
Total fixed maturity securities 8,680   7,901      
U.S. Treasury and obligations of government-sponsored enterprises            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 224   152      
Gross Unrealized Gains 2   1      
Gross Unrealized Losses 4   2      
Allowance for Credit Losses 0   0      
Estimated Fair Value 222   151      
Foreign government            
Fixed maturity securities available-for-sale:            
Cost or Amortized Cost 755   741      
Gross Unrealized Gains 8   6      
Gross Unrealized Losses 26   34      
Allowance for Credit Losses 0   0      
Estimated Fair Value $ 737   $ 713