v3.26.1
Variable Interest Entities - Variable Interests Held by Us and Our Maximum Exposure to Loss Rising From Our Involvements in Those VIEs (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Variable Interest Entity [Line Items]      
Assets $ 180,708 $ 176,367 $ 172,410
Liabilities $ 167,951   159,971
Investment Proportional Amortization Method Elected Statement Of Financial Position Extensible Enumeration Not Disclosed Flag assets assets  
Variable Interest Entity, Not Primary Beneficiary      
Variable Interest Entity [Line Items]      
Total Assets Held by Unconsolidated VIEs $ 9,900   8,600
Assets 2,600   1,500
Liabilities 800   700
Maximum Exposure to Loss 2,600   1,500
Limited partnership investments      
Variable Interest Entity [Line Items]      
Total Assets Held by Unconsolidated VIEs 8,200   8,200
Assets 1,400   1,300
Liabilities 800   700
Maximum Exposure to Loss 1,400   1,300
Low income housing investments, variable interests held reported as assets, carrying value 1,400   1,300
Asset-backed financing SPEs      
Variable Interest Entity [Line Items]      
Total Assets Held by Unconsolidated VIEs 1,700   400
Assets 1,200   200
Liabilities 0   0
Maximum Exposure to Loss $ 1,200   $ 200