v3.25.4
Investments - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
Investments [Line Items]      
Decrease in gross AFS securities unrealized losses $ 1,500    
Losses from loan modifications 25 $ 3  
Trading securities change in gross gain (loss) $ 41 $ (1) $ 80
Number of partnerships in alternative investment portfolio | security 364 351  
Alternative investments as a percentage of overall invested assets 3.00% 3.00%  
Investment commitments $ 4,600    
Investment commitments for limited partnerships 3,100    
Investment commitments for mortgage loans on real estate 890    
Investment commitments for asset-backed variable interest entities 390    
Investment commitments for private placements 245    
Derivative Counterparties      
Investments [Line Items]      
Fair value of collateral received that we are permitted to sell or re-pledge 2,300    
Fair value of securities received as collateral that have been resold or repledged $ 31    
Minimum      
Investments [Line Items]      
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements 80.00%    
Maximum      
Investments [Line Items]      
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements 95.00%    
California | Mortgage loans on real estate | Geographic Concentration Risk | Commercial      
Investments [Line Items]      
Concentration risk 28.00% 27.00%  
California | Mortgage loans on real estate | Geographic Concentration Risk | Residential      
Investments [Line Items]      
Concentration risk   14.00%  
Texas | Mortgage loans on real estate | Geographic Concentration Risk | Commercial      
Investments [Line Items]      
Concentration risk 10.00% 10.00%  
New York | Mortgage loans on real estate | Geographic Concentration Risk | Residential      
Investments [Line Items]      
Concentration risk 13.00% 14.00%  
FLORIDA | Mortgage loans on real estate | Geographic Concentration Risk | Residential      
Investments [Line Items]      
Concentration risk 12.00%    
Corporate bonds      
Investments [Line Items]      
Percentage of fair value rated as investment grade 96.00% 96.00%  
Amortized cost of portfolio rated below investment grade $ 3,000 $ 2,700  
Fair value of portfolio rated below investment grade 2,900 2,700  
White Chapel LLC | MBS      
Investments [Line Items]      
Fair value, concentration of risk $ 1,200 $ 1,500  
White Chapel LLC | Investments | Lender Concentration Risk | MBS      
Investments [Line Items]      
Concentration risk 1.00% 1.00%  
White Chapel V LLC | MBS      
Investments [Line Items]      
Fair value, concentration of risk $ 1,100 $ 1,100  
White Chapel V LLC | Investments | Lender Concentration Risk | MBS      
Investments [Line Items]      
Concentration risk 1.00% 1.00%  
Financial Service | Securities Investment      
Investments [Line Items]      
Fair value, concentration of risk $ 16,200 $ 16,200  
Financial Service | Investments | Lender Concentration Risk | Securities Investment      
Investments [Line Items]      
Concentration risk 12.00% 13.00%  
Consumer Non-Cyclical Industry | Securities Investment      
Investments [Line Items]      
Fair value, concentration of risk $ 11,000 $ 10,700  
Consumer Non-Cyclical Industry | Investments | Lender Concentration Risk | Securities Investment      
Investments [Line Items]      
Concentration risk 8.00% 9.00%