v3.26.1
Investments - Summary of Maximum Loss Exposure (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Variable Interest Entity [Line Items]    
Assets $ 472,879 $ 442,205
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 148,133 151,286
Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity [Line Items]    
Assets 139,121 135,174
Variable Interest Entity, Not Primary Beneficiary | Investment funds    
Variable Interest Entity [Line Items]    
Assets 26,798 24,070
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 31,300 29,991
Variable Interest Entity, Not Primary Beneficiary, Consolidated Entity Exclude Affiliated | Investment funds    
Variable Interest Entity [Line Items]    
Assets 276 108
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 596 458
Variable Interest Entity, Not Primary Beneficiary, Consolidated Entity Exclude Affiliated | Fixed maturity securities    
Variable Interest Entity [Line Items]    
Assets 78,757 84,397
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 80,860 87,995
Variable Interest Entity, Not Primary Beneficiary, Affiliated Entity | Investment funds    
Variable Interest Entity [Line Items]    
Assets 3,243 2,149
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 4,463 5,859
Variable Interest Entity, Not Primary Beneficiary, Affiliated Entity | Fixed maturity securities    
Variable Interest Entity [Line Items]    
Assets 30,047 24,184
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount 30,914 26,717
Variable Interest Entity, Not Primary Beneficiary, Affiliated Entity | Equity securities    
Variable Interest Entity [Line Items]    
Assets 0 266
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount $ 0 $ 266