v3.26.1
Fair Value Measurements - Assets and liabilities measured and carried at fair value in the financial statements (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Available for sale (AFS) fixed maturities $ 11,258 $ 11,052
Trading fixed maturities 80 91
Equity securities, at fair value 779 785
Assets of managed investment entities 4,142 4,050
Other assets 1,325 1,280
Total assets accounted for at fair value 16,259 15,979
Liabilities:    
Liabilities of managed investment entities 3,993 3,907
Other liabilities - derivatives 2,127 2,070
Total liabilities accounted for at fair value 4,001 3,913
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Liabilities:    
Contingent consideration — acquisitions 3 3
Other liabilities — derivatives    
Liabilities:    
Other liabilities - derivatives 5 3
Fixed maturities    
Assets:    
Available for sale (AFS) fixed maturities 11,258 11,052
Trading fixed maturities 80 91
U.S. government and government agencies    
Assets:    
Available for sale (AFS) fixed maturities 143 161
States, municipalities and political subdivisions    
Assets:    
Available for sale (AFS) fixed maturities 773 835
Foreign government    
Assets:    
Available for sale (AFS) fixed maturities 232 238
Residential MBS    
Assets:    
Available for sale (AFS) fixed maturities 3,183 2,747
Collateralized loan obligations    
Assets:    
Available for sale (AFS) fixed maturities 1,096 1,160
Other asset-backed securities    
Assets:    
Available for sale (AFS) fixed maturities 2,567 2,525
Corporate and other    
Assets:    
Available for sale (AFS) fixed maturities 3,264 3,386
Equity securities    
Assets:    
Equity securities, at fair value 779 785
Other assets — derivatives    
Assets:    
Other assets   1
Level 1    
Assets:    
Assets of managed investment entities 210 310
Total assets accounted for at fair value 833 946
Liabilities:    
Liabilities of managed investment entities 202 298
Total liabilities accounted for at fair value 202 298
Level 1 | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Liabilities:    
Contingent consideration — acquisitions 0 0
Level 1 | Other liabilities — derivatives    
Liabilities:    
Other liabilities - derivatives 0 0
Level 1 | Fixed maturities    
Assets:    
Available for sale (AFS) fixed maturities 141 158
Trading fixed maturities 0 0
Level 1 | U.S. government and government agencies    
Assets:    
Available for sale (AFS) fixed maturities 140 157
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 | 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 1 1
Level 1 | Equity securities    
Assets:    
Equity securities, at fair value 482 478
Level 1 | Other assets — derivatives    
Assets:    
Other assets   0
Level 2    
Assets:    
Assets of managed investment entities 3,918 3,725
Total assets accounted for at fair value 14,452 14,025
Liabilities:    
Liabilities of managed investment entities 3,777 3,594
Total liabilities accounted for at fair value 3,782 3,597
Level 2 | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Liabilities:    
Contingent consideration — acquisitions 0 0
Level 2 | Other liabilities — derivatives    
Liabilities:    
Other liabilities - derivatives 5 3
Level 2 | Fixed maturities    
Assets:    
Available for sale (AFS) fixed maturities 10,415 10,182
Trading fixed maturities 69 66
Level 2 | U.S. government and government agencies    
Assets:    
Available for sale (AFS) fixed maturities 3 4
Level 2 | States, municipalities and political subdivisions    
Assets:    
Available for sale (AFS) fixed maturities 771 831
Level 2 | Foreign government    
Assets:    
Available for sale (AFS) fixed maturities 232 238
Level 2 | Residential MBS    
Assets:    
Available for sale (AFS) fixed maturities 3,180 2,744
Level 2 | Collateralized loan obligations    
Assets:    
Available for sale (AFS) fixed maturities 1,096 1,160
Level 2 | Other asset-backed securities    
Assets:    
Available for sale (AFS) fixed maturities 2,250 2,215
Level 2 | Corporate and other    
Assets:    
Available for sale (AFS) fixed maturities 2,883 2,990
Level 2 | Equity securities    
Assets:    
Equity securities, at fair value 50 51
Level 2 | Other assets — derivatives    
Assets:    
Other assets   1
Level 3    
Assets:    
Assets of managed investment entities 14 15
Total assets accounted for at fair value 974 1,008
Liabilities:    
Liabilities of managed investment entities 14 15
Total liabilities accounted for at fair value 17 18
Level 3 | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Liabilities:    
Contingent consideration — acquisitions 3 3
Level 3 | Other liabilities — derivatives    
Liabilities:    
Other liabilities - derivatives 0 0
Level 3 | Fixed maturities    
Assets:    
Available for sale (AFS) fixed maturities 702 712
Trading fixed maturities 11 25
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 4
Level 3 | Foreign government    
Assets:    
Available for sale (AFS) fixed maturities 0 0
Level 3 | Residential MBS    
Assets:    
Available for sale (AFS) fixed maturities 3 3
Level 3 | Collateralized loan obligations    
Assets:    
Available for sale (AFS) fixed maturities 0 0
Level 3 | Other asset-backed securities    
Assets:    
Available for sale (AFS) fixed maturities 317 310
Level 3 | Corporate and other    
Assets:    
Available for sale (AFS) fixed maturities 380 395
Level 3 | Equity securities    
Assets:    
Equity securities, at fair value $ 247 256
Level 3 | Other assets — derivatives    
Assets:    
Other assets   $ 0