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v3.25.1

Fair Value (Assets and liabilities measured at fair value on a recurring basis) (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fixed maturity securities: |  |
Fixed maturity securities | $ 41,973 | $ 41,111
Equity securities: |  |
Equity securities | 695 | 659
Short-term and other | 1,411 | 1,922
Total assets | 44,079 | 43,692
Total liabilities | 0 | 0
Corporate and other bonds |  |
Fixed maturity securities: |  |
Fixed maturity securities | 26,616 | 25,841
States, municipalities and political subdivisions |  |
Fixed maturity securities: |  |
Fixed maturity securities | 6,644 | 6,804
Asset-backed |  |
Fixed maturity securities: |  |
Fixed maturity securities | 8,713 | 8,466
Common Stock |  |
Equity securities: |  |
Equity securities | 182 | 180
Non-redeemable preferred stock |  |
Equity securities: |  |
Equity securities | 513 | 479
Level 1 |  |
Fixed maturity securities: |  |
Fixed maturity securities | 222 | 223
Equity securities: |  |
Equity securities | 200 | 198
Short-term and other | 1,368 | 1,852
Total assets | 1,790 | 2,273
Total liabilities | 0 | 0
Level 1 | Corporate and other bonds |  |
Fixed maturity securities: |  |
Fixed maturity securities | 222 | 223
Level 1 | States, municipalities and political subdivisions |  |
Fixed maturity securities: |  |
Fixed maturity securities | 0 | 0
Level 1 | Asset-backed |  |
Fixed maturity securities: |  |
Fixed maturity securities | 0 | 0
Level 1 | Common Stock |  |
Equity securities: |  |
Equity securities | 165 | 162
Level 1 | Non-redeemable preferred stock |  |
Equity securities: |  |
Equity securities | 35 | 36
Level 2 |  |
Fixed maturity securities: |  |
Fixed maturity securities | 39,467 | 38,692
Equity securities: |  |
Equity securities | 478 | 441
Short-term and other | 43 | 70
Total assets | 39,988 | 39,203
Total liabilities | 0 | 0
Level 2 | Corporate and other bonds |  |
Fixed maturity securities: |  |
Fixed maturity securities | 25,043 | 24,340
Level 2 | States, municipalities and political subdivisions |  |
Fixed maturity securities: |  |
Fixed maturity securities | 6,600 | 6,762
Level 2 | Asset-backed |  |
Fixed maturity securities: |  |
Fixed maturity securities | 7,824 | 7,590
Level 2 | Common Stock |  |
Equity securities: |  |
Equity securities | 0 | 0
Level 2 | Non-redeemable preferred stock |  |
Equity securities: |  |
Equity securities | 478 | 441
Level 3 |  |
Fixed maturity securities: |  |
Fixed maturity securities | 2,284 | 2,196
Equity securities: |  |
Equity securities | 17 | 20
Short-term and other | 0 | 0
Total assets | 2,301 | 2,216
Total liabilities | 0 | 0
Level 3 | Corporate and other bonds |  |
Fixed maturity securities: |  |
Fixed maturity securities | 1,351 | 1,278
Level 3 | States, municipalities and political subdivisions |  |
Fixed maturity securities: |  |
Fixed maturity securities | 44 | 42
Level 3 | Asset-backed |  |
Fixed maturity securities: |  |
Fixed maturity securities | 889 | 876
Level 3 | Common Stock |  |
Equity securities: |  |
Equity securities | 17 | 18
Level 3 | Non-redeemable preferred stock |  |
Equity securities: |  |
Equity securities | $ 0 | $ 2

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