v3.26.1
Liability for Future Policyholder Benefits - Reconciliation of the Net Liability for Future Benefits to Life and Health Insurance Reserves (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Insurance [Abstract]            
Net Liability for Future Policyholder Benefits, post-flooring $ 2,638,300 $ 2,660,300 $ 2,638,300 $ 2,660,300    
Deferred Profit Liability 510,300 444,500 510,300 444,500 $ 481,700 $ 412,100
A&H and Other Reserves 129,500 130,500 129,500 130,500    
Total Life and Health Insurance Reserves 3,278,100 3,235,300 3,278,100 3,235,300    
Term Life Insurance            
Liability for Future Policy Benefit, by Product Segment [Line Items]            
Net Liability for Future Policyholder Benefits, post-flooring 10,067,600 10,162,100 10,067,600 10,162,100    
Expected Future Gross Premiums, undiscounted 3,938,100 4,015,800 3,938,100 4,015,800    
Expected Future Gross Premiums, discounted 2,641,200 2,691,600 2,641,200 2,691,600    
Gross Premiums or Assessments 99,400 98,800 200,900 200,500    
Interest Expense $ 34,300 $ 34,400 $ 68,800 $ 69,100    
Interest Accretion Rate 4.50% 4.50% 4.50% 4.50%    
Current Discount Rate 5.83% 5.74% 5.83% 5.74%