v3.26.1
Investments - Analysis of Cost or Amortized Cost, Gross Unrealized Gains and Losses and Fair Value for Investments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale    
Investments, available-for-sale, amortized cost basis $ 19,423 $ 18,452
Investments, Available-for-Sale, Accumulated Gross Unrealized Gain Before Tax 152 216
Investments, Available-for-Sale, Accumulated Gross Unrealized Loss Before Tax 479 397
Investments, Available-for-Sale 19,096 18,271
Short-term investments, available-for-sale, amortized cost basis 143 148
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 1 0
Short-Term Investments 142 148
Total 19,280 18,304
Gross unrealized gain 152 216
Gross unrealized loss 478 397
Fixed maturities, at fair value 18,954 18,123
Corporate    
Debt Securities, Available-for-sale    
Total 10,592 9,750
Gross unrealized gain 105 164
Gross unrealized loss 241 203
Fixed maturities, at fair value 10,456 9,711
States, municipalities and political subdivisions    
Debt Securities, Available-for-sale    
Total 5,023 5,065
Gross unrealized gain 41 35
Gross unrealized loss 182 181
Fixed maturities, at fair value 4,882 4,919
Government-sponsored enterprises    
Debt Securities, Available-for-sale    
Total 2,512 2,360
Gross unrealized gain 0 3
Gross unrealized loss 41 4
Fixed maturities, at fair value 2,471 2,359
Asset-backed    
Debt Securities, Available-for-sale    
Total 812 793
Gross unrealized gain 6 12
Gross unrealized loss 10 8
Fixed maturities, at fair value 808 797
United States government    
Debt Securities, Available-for-sale    
Total 321 312
Gross unrealized gain 0 2
Gross unrealized loss 4 1
Fixed maturities, at fair value 317 313
Foreign government    
Debt Securities, Available-for-sale    
Total 20 24
Gross unrealized gain 0 0
Gross unrealized loss 0 0
Fixed maturities, at fair value $ 20 $ 24