v3.26.1
Policyholder Account Balances, Future Policy Benefits and Claims - Amounts Recognized in Statement of Operations (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums $ 282 $ 616
Interest Expense 190 385
Life Contingent Payout Annuities    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums 62 157
Interest Expense 28 56
Term and Whole Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums 86 174
Interest Expense 15 35
Disability Income Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums 54 114
Interest Expense 13 28
Long Term Care Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross Premiums 80 171
Interest Expense $ 134 $ 266