v3.26.3
Long-Duration Insurance Contracts - Actual and Expected Experience of Mortality Rate and Lapse Rate (Details)
Sep. 30, 2026
Sep. 30, 2025
Whole Life    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 0.70% 0.80%
Mortality / Morbidity, expected experience 0.80% 0.80%
Lapses, actual experience 3.70% 3.50%
Lapses, expected experience 3.40% 3.80%
Term Life | Minimum    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 0.10% 0.10%
Mortality / Morbidity, expected experience 0.10% 0.10%
Lapses, actual experience 4.60% 3.80%
Lapses, expected experience 4.80% 5.10%
Term Life | Maximum    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 1.00% 0.70%
Mortality / Morbidity, expected experience 1.50% 1.30%
Lapses, actual experience 13.20% 13.60%
Lapses, expected experience 12.60% 13.40%
Experience life    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 1.80% 1.80%
Mortality / Morbidity, expected experience 2.00% 1.90%
Lapses, actual experience 4.40% 3.80%
Lapses, expected experience 3.20% 3.00%
Limited-Pay Whole Life    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 0.20% 0.50%
Mortality / Morbidity, expected experience 0.30% 0.30%
Lapses, actual experience 4.20% 3.30%
Lapses, expected experience 3.60% 4.00%
Supplemental health    
Liability for Future Policy Benefit, by Product Segment [Line Items]    
Mortality / Morbidity, actual experience 31.20% 27.10%
Mortality / Morbidity, expected experience 26.70% 26.50%
Lapses, actual experience 10.90% 10.70%
Lapses, expected experience 10.70% 10.20%