v3.26.1
Deferred Policy Acquisition Costs and Value of Business Acquired - DAC and VOBA Activity (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
VOBA    
Beginning balance $ 710 $ 376
Net amortization included in Condensed Consolidated Statements of Operations (14) (60)
Ending balance 697 710
OneAmerica    
VOBA    
Deferrals of commissions and expenses   390
Deferrals    
VOBA    
Deferrals of commissions and expenses 1 4
Retirement Deferred Group and Individual Annuity    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Beginning balance 706 701
Deferrals of commissions and expenses 16 59
Net amortization included in the Consolidated Statements of Operations (14) (54)
Ending balance 708 706
Retirement Deferred Group and Individual Annuity | OneAmerica    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Deferrals of commissions and expenses   0
Retirement Deferred Group and Individual Annuity | OneAmerica    
VOBA    
Deferrals of commissions and expenses 0 3,458
Health Solutions    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Beginning balance 221 215
Deferrals of commissions and expenses 10 46
Net amortization included in the Consolidated Statements of Operations (14) (40)
Ending balance 217 221
Businesses Exited    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Beginning balance 744 838
Deferrals of commissions and expenses 0 0
Net amortization included in the Consolidated Statements of Operations (22) (94)
Ending balance 722 744
Businesses Exited | OneAmerica    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Deferrals of commissions and expenses   0
Businesses Exited | OneAmerica    
VOBA    
Deferrals of commissions and expenses $ 0 0
Health Solutions Segment | OneAmerica    
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]    
Deferrals of commissions and expenses   $ 0