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Fair Value Measurements - Assets and liabilities measured and carried at fair value in the financial statements (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Available for sale (AFS) fixed maturities | $ 10,371 | $ 10,377
Trading fixed maturities | 57 | 57
Equity securities | 1,040 | 1,018
Assets of managed investment entities | 4,669 | 4,484
Other assets | 80 | 87
Total assets accounted for at fair value | 16,140 | 15,942
Liabilities: |  |
Liabilities of managed investment entities | 4,468 | 4,307
Derivative liability | 28 | 22
Total liabilities accounted for at fair value | 4,498 | 4,331
Contingent consideration — acquisitions |  |
Liabilities: |  |
Fair value of potential contingent consideration | 2 | 2
Other liabilities — derivatives |  |
Liabilities: |  |
Derivative liability | 28 | 22
Fixed maturities: |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 10,371 | 10,377
Trading fixed maturities | 57 | 57
U.S. government and government agencies |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 199 | 236
States, municipalities and political subdivisions |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 910 | 984
Foreign government |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 235 | 230
Residential MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1,674 | 1,658
Commercial MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 72 | 74
Collateralized loan obligations |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1,593 | 1,687
Other asset-backed securities |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 2,374 | 2,362
Corporate and other |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 3,314 | 3,146
Equity securities |  |
Assets: |  |
Equity securities | 1,040 | 1,018
Other assets |  |
Assets: |  |
Other assets | 3 | 6
Level 1 |  |
Assets: |  |
Assets of managed investment entities | 430 | 335
Total assets accounted for at fair value | 1,100 | 1,079
Liabilities: |  |
Liabilities of managed investment entities | 411 | 322
Total liabilities accounted for at fair value | 411 | 322
Level 1 | Contingent consideration — acquisitions |  |
Liabilities: |  |
Fair value of potential contingent consideration | 0 | 0
Level 1 | Other liabilities — derivatives |  |
Liabilities: |  |
Derivative liability | 0 | 0
Level 1 | Fixed maturities: |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 209 | 244
Trading fixed maturities | 0 | 0
Level 1 | U.S. government and government agencies |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 198 | 235
Level 1 | States, municipalities and political subdivisions |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Foreign government |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Residential MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Commercial MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Collateralized loan obligations |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Other asset-backed securities |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 1 | Corporate and other |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 11 | 9
Level 1 | Equity securities |  |
Assets: |  |
Equity securities | 461 | 500
Level 1 | Other assets |  |
Assets: |  |
Other assets | 0 | 0
Level 2 |  |
Assets: |  |
Assets of managed investment entities | 4,229 | 4,140
Total assets accounted for at fair value | 13,743 | 13,633
Liabilities: |  |
Liabilities of managed investment entities | 4,047 | 3,976
Total liabilities accounted for at fair value | 4,075 | 3,998
Level 2 | Contingent consideration — acquisitions |  |
Liabilities: |  |
Fair value of potential contingent consideration | 0 | 0
Level 2 | Other liabilities — derivatives |  |
Liabilities: |  |
Derivative liability | 28 | 22
Level 2 | Fixed maturities: |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 9,420 | 9,397
Trading fixed maturities | 57 | 57
Level 2 | U.S. government and government agencies |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1 | 1
Level 2 | States, municipalities and political subdivisions |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 908 | 982
Level 2 | Foreign government |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 235 | 230
Level 2 | Residential MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1,672 | 1,656
Level 2 | Commercial MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 72 | 74
Level 2 | Collateralized loan obligations |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1,592 | 1,686
Level 2 | Other asset-backed securities |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 2,039 | 2,011
Level 2 | Corporate and other |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 2,901 | 2,757
Level 2 | Equity securities |  |
Assets: |  |
Equity securities | 34 | 33
Level 2 | Other assets |  |
Assets: |  |
Other assets | 3 | 6
Level 3 |  |
Assets: |  |
Assets of managed investment entities | 10 | 9
Total assets accounted for at fair value | 1,297 | 1,230
Liabilities: |  |
Liabilities of managed investment entities | 10 | 9
Total liabilities accounted for at fair value | 12 | 11
Level 3 | Contingent consideration — acquisitions |  |
Liabilities: |  |
Fair value of potential contingent consideration | 2 | 2
Level 3 | Other liabilities — derivatives |  |
Liabilities: |  |
Derivative liability | 0 | 0
Level 3 | Fixed maturities: |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 742 | 736
Trading fixed maturities | 0 | 0
Level 3 | U.S. government and government agencies |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 3 | States, municipalities and political subdivisions |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 2 | 2
Level 3 | Foreign government |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 3 | Residential MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 2 | 2
Level 3 | Commercial MBS |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 0 | 0
Level 3 | Collateralized loan obligations |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 1 | 1
Level 3 | Other asset-backed securities |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 335 | 351
Level 3 | Corporate and other |  |
Assets: |  |
Available for sale (AFS) fixed maturities | 402 | 380
Level 3 | Equity securities |  |
Assets: |  |
Equity securities | 545 | 485
Level 3 | Other assets |  |
Assets: |  |
Other assets | $ 0 | $ 0

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