v3.26.1
Policyholders' Liabilities (Liabilities for Future Policy Benefits, Weighted Average) (Details)
Jun. 30, 2026
Jun. 30, 2025
International Insurance, Permanent    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Weighted-Average Duration, Original Discount 8 years 2 months 12 days 7 years 8 months 12 days
Liability for Future Policy Benefit, Weighted-Average Duration, Current Discount 8 years 7 years 8 months 12 days
Liability for Future Policy Benefit, Original Weighted-Average Discount Rate 4.81% 4.67%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.10% 4.92%
Domestic Insurance, Life Insurance, Permanent    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Weighted-Average Duration, Original Discount 17 years 4 months 24 days 16 years
Liability for Future Policy Benefit, Weighted-Average Duration, Current Discount 16 years 3 months 18 days 15 years
Liability for Future Policy Benefit, Original Weighted-Average Discount Rate 4.99% 5.03%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.53% 5.82%
International Insurance, Permanent Limited Pay    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Weighted-Average Duration, Original Discount 7 years 8 months 12 days 5 years 10 months 24 days
Liability for Future Policy Benefit, Weighted-Average Duration, Current Discount 7 years 3 months 18 days 5 years 7 months 6 days
Liability for Future Policy Benefit, Original Weighted-Average Discount Rate 4.23% 3.48%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.12% 4.23%
Domestic Insurance, Life Insurance, Permanent Limited Pay    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for Future Policy Benefit, Weighted-Average Duration, Original Discount 13 years 9 months 18 days 15 years 9 months 18 days
Liability for Future Policy Benefit, Weighted-Average Duration, Current Discount 12 years 10 months 24 days 15 years
Liability for Future Policy Benefit, Original Weighted-Average Discount Rate 4.85% 5.67%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate 5.49% 6.50%