v3.26.1
Investments - Investment Portfolio by Major Security Type (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 93,463 $ 92,709 $ 84,475
Gross Unrealized Gains 177 901 889
Gross Unrealized Losses (1,230) (753) (999)
Net Holding Period Gains (Losses) 3 14 10
Total available-for-sale securities $ 92,413 $ 92,871 $ 84,375
% of Total Fair Value 95.00% 95.40% 95.20%
Equity securities, at Fair Value      
Cost $ 1,162 $ 1,238 $ 1,292
Gross Unrealized Gains 0 0 0
Gross Unrealized Losses 0 0 0
Net Holding Period Gains (Losses) 3,646 3,264 2,943
Fair Value $ 4,808 $ 4,502 $ 4,235
% of Total Fair Value 5.00% 4.60% 4.80%
Debt and Equity Securities, at Fair Value      
Cost $ 94,625 $ 93,947 $ 85,767
Gross Unrealized Gains 177 901 889
Gross Unrealized Losses (1,230) (753) (999)
Net Holding Period Gains (Losses) 3,649 3,278 2,953
Fair Value $ 97,221 $ 97,373 $ 88,610
% of Total Fair Value 100.00% 100.00% 100.00%
Unsettled security transactions, payable $ 568 $ 200 $ 303
Total fair value of non-insurance subsidiary portfolio 6,700 13,000 5,000
Nonredeemable preferred stocks      
Equity securities, at Fair Value      
Cost 292 419 517
Gross Unrealized Gains 0 0 0
Gross Unrealized Losses 0 0 0
Net Holding Period Gains (Losses) (16) (15) (17)
Fair Value $ 276 $ 404 $ 500
% of Total Fair Value 0.30% 0.40% 0.60%
Common equities      
Equity securities, at Fair Value      
Cost $ 870 $ 819 $ 775
Gross Unrealized Gains 0 0 0
Gross Unrealized Losses 0 0 0
Net Holding Period Gains (Losses) 3,662 3,279 2,960
Fair Value $ 4,532 $ 4,098 $ 3,735
% of Total Fair Value 4.70% 4.20% 4.20%
Total fixed maturities      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 91,485 $ 82,704 $ 82,372
Gross Unrealized Gains 177 901 889
Gross Unrealized Losses (1,230) (753) (999)
Net Holding Period Gains (Losses) 3 14 10
Total available-for-sale securities $ 90,435 $ 82,866 $ 82,272
% of Total Fair Value 93.00% 85.10% 92.80%
Total fixed maturities | U.S. government      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 44,463 $ 43,114 $ 46,684
Gross Unrealized Gains 52 541 598
Gross Unrealized Losses (734) (357) (472)
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 43,781 $ 43,298 $ 46,810
% of Total Fair Value 45.00% 44.50% 52.80%
Total fixed maturities | State and local government      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 3,904 $ 3,342 $ 3,030
Gross Unrealized Gains 10 19 12
Gross Unrealized Losses (62) (58) (78)
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 3,852 $ 3,303 $ 2,964
% of Total Fair Value 4.00% 3.40% 3.30%
Total fixed maturities | Foreign government      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 16 $ 17 $ 17
Gross Unrealized Gains 0 0 0
Gross Unrealized Losses 0 0 0
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 16 $ 17 $ 17
% of Total Fair Value 0.00% 0.00% 0.00%
Total fixed maturities | Corporate and other debt      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 21,641 $ 19,773 $ 18,004
Gross Unrealized Gains 86 273 222
Gross Unrealized Losses (139) (68) (112)
Net Holding Period Gains (Losses) 3 13 8
Total available-for-sale securities $ 21,591 $ 19,991 $ 18,122
% of Total Fair Value 22.20% 20.50% 20.50%
Total fixed maturities | Residential mortgage-backed      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 4,291 $ 3,152 $ 2,644
Gross Unrealized Gains 14 28 21
Gross Unrealized Losses (23) (6) (7)
Net Holding Period Gains (Losses) 0 1 2
Total available-for-sale securities $ 4,282 $ 3,175 $ 2,660
% of Total Fair Value 4.40% 3.30% 3.00%
Total fixed maturities | Commercial mortgage-backed      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 7,674 $ 6,194 $ 5,325
Gross Unrealized Gains 8 12 10
Gross Unrealized Losses (229) (233) (286)
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 7,453 $ 5,973 $ 5,049
% of Total Fair Value 7.70% 6.10% 5.70%
Total fixed maturities | Other asset-backed      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 9,496 $ 7,112 $ 6,668
Gross Unrealized Gains 7 28 26
Gross Unrealized Losses (43) (31) (44)
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 9,460 $ 7,109 $ 6,650
% of Total Fair Value 9.70% 7.30% 7.50%
Short-term investments      
Debt Securities, Available-for-Sale, at Fair Value      
Cost $ 1,978 $ 10,005 $ 2,103
Gross Unrealized Gains 0 0 0
Gross Unrealized Losses 0 0 0
Net Holding Period Gains (Losses) 0 0 0
Total available-for-sale securities $ 1,978 $ 10,005 $ 2,103
% of Total Fair Value 2.00% 10.30% 2.40%