v3.26.3
Investments - Analysis of Cost or Amortized Cost, Gross Unrealized Gains and Losses and Fair Value for Investments (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale    
Investments, available-for-sale, amortized cost basis $ 20,555 $ 18,452
Investments, Available-for-Sale, Accumulated Gross Unrealized Gain Before Tax 27 216
Investments, Available-for-Sale, Accumulated Gross Unrealized Loss Before Tax 1,516 397
Investments, Available-for-Sale 19,066 18,271
Short-term investments, available-for-sale, amortized cost basis 144 148
Short-term investments, available-for-sale, accumulated gross unrealized gain, before tax 0 0
Short-term investments, available-for-sale, accumulated gross unrealized loss, before tax 3 0
Short-Term Investments 141 148
Total 20,411 18,304
Gross unrealized gain 27 216
Gross unrealized loss 1,513 397
Fixed maturities, at fair value 18,925 18,123
Corporate    
Debt Securities, Available-for-sale    
Total 11,191 9,750
Gross unrealized gain 27 164
Gross unrealized loss 676 203
Fixed maturities, at fair value 10,542 9,711
States, municipalities and political subdivisions    
Debt Securities, Available-for-sale    
Total 4,982 5,065
Gross unrealized gain 0 35
Gross unrealized loss 507 181
Fixed maturities, at fair value 4,475 4,919
Government-sponsored enterprises    
Debt Securities, Available-for-sale    
Total 2,948 2,360
Gross unrealized gain 0 3
Gross unrealized loss 268 4
Fixed maturities, at fair value 2,680 2,359
Asset-backed    
Debt Securities, Available-for-sale    
Total 945 793
Gross unrealized gain 0 12
Gross unrealized loss 47 8
Fixed maturities, at fair value 898 797
United States government    
Debt Securities, Available-for-sale    
Total 326 312
Gross unrealized gain 0 2
Gross unrealized loss 15 1
Fixed maturities, at fair value 311 313
Foreign government    
Debt Securities, Available-for-sale    
Total 19 24
Gross unrealized gain 0 0
Gross unrealized loss 0 0
Fixed maturities, at fair value $ 19 $ 24