v3.26.3
Future Policy Benefits - Weighted-average interest rates (Details)
Sep. 30, 2026
Sep. 30, 2025
Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, original discount rate 4.03% 3.91%
Weighted-average interest rate, current discount rate 6.24% 5.13%
Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, original discount rate 5.17% 5.31%
Weighted-average interest rate, current discount rate 6.11% 4.97%
Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, original discount rate 4.79% 4.70%
Weighted-average interest rate, current discount rate 6.43% 5.34%
Life Insurance | Universal Life    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, current discount rate 4.15% 4.01%
Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, original discount rate 4.61% 4.55%
Weighted-average interest rate, current discount rate 6.51% 5.74%
Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, original discount rate 4.90% 4.88%
Weighted-average interest rate, current discount rate 6.39% 5.33%
Corporate & Other | Universal Life    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest rate, current discount rate 4.20% 4.20%