v3.26.3
INVESTMENTS - Narrative (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
Loan
note
issue
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
note
Loan
issue
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Loan
issue
note
Dec. 31, 2024
USD ($)
note
Dec. 31, 2023
USD ($)
loan
Net Investment Income [Line Items]              
Number of positions in unrealized loss position | issue 5,958   5,958   3,287    
Debt securities exposure in single issuer greater than stated percentage of total investments 0.50%   0.50%        
Amortized cost of fixed maturities available-for-sale $ 89,966,000,000   $ 89,966,000,000   $ 82,106,000,000    
12 months or longer, gross unrealized losses 7,362,000,000   7,362,000,000   5,761,000,000    
Loaned securities 1,000,000,000.0   $ 1,000,000,000.0   1,400,000,000    
Minimum requirement percentage of the fair value of the loaned securities to be held as cash collateral     102.00%        
Cash collateral 1,000,000,000.0   $ 1,000,000,000.0   1,400,000,000    
Allowance for credit losses 378,000,000 $ 287,000,000 378,000,000 $ 287,000,000 313,000,000    
Non-accruing Loans $ 136,000,000   $ 136,000,000   48,000,000    
Number of modifications to contracts | note 1   3        
Separate account equity investment carrying value $ 80,000,000   $ 80,000,000   73,000,000    
Interest credited to policyholders account balances participating group annuity contracts 0 0 1,000,000 1,000,000      
Net investment income (loss) 1,350,000,000 1,343,000,000 4,031,000,000 3,946,000,000      
Investment gains (losses), net (84,000,000) (1,170,000,000) (178,000,000) (1,255,000,000)      
Cash              
Net Investment Income [Line Items]              
Cash collateral 316,000,000   316,000,000   408,000,000    
Recurring              
Net Investment Income [Line Items]              
Trading securities, at fair value 1,911,000,000   1,911,000,000   1,572,000,000    
Commercial, Agricultural And Residential Mortgage Loan              
Net Investment Income [Line Items]              
Accrued investment income receivable $ 152,000,000   152,000,000   118,000,000    
Accrued interest written off     $ 0 0      
Individually Assessed Mortgage Loans              
Net Investment Income [Line Items]              
Number of mortgage loans, foreclosure probable | Loan 0   0        
Mortgage Loans              
Net Investment Income [Line Items]              
Non-accruing Loans $ 10,000,000   $ 10,000,000   11,000,000    
Fixed maturities              
Net Investment Income [Line Items]              
Accrued investment income receivable 705,000,000   705,000,000   669,000,000    
Accrued interest written off 0 $ 0 0 $ 0      
Amortized cost of fixed maturities available-for-sale 90,000,000,000.0   90,000,000,000.0   82,100,000,000    
Fixed maturities | Non-Investment Grade              
Net Investment Income [Line Items]              
Available-for-sale securities, amortized cost basis other than investment grade $ 1,900,000,000   $ 1,900,000,000   $ 1,800,000,000    
Percentage of available for sale securities 2.10%   2.10%   2.10%    
Unrealized loss on available for sale securities $ 85,000,000   $ 85,000,000   $ 70,000,000    
Public Corporate              
Net Investment Income [Line Items]              
Exposure in single issuer of total investments 412,000,000   412,000,000   $ 402,000,000    
Debt securities exposure in single issuer of total investments, percentage         27.40%    
Amortized cost of fixed maturities available-for-sale 52,226,000,000   52,226,000,000   $ 48,193,000,000    
12 months or longer, gross unrealized losses $ 5,001,000,000   $ 5,001,000,000   3,942,000,000    
Commercial mortgages:              
Net Investment Income [Line Items]              
Number of loans | loan             4
Number of loans split into notes | note     2     2  
Number of notes with original loan terms | note           1  
Interest rate, SOFR     4.60%        
Debt instrument, stated percentage 2.00%   2.00%        
Amortized cost $ 45,000,000   $ 215,000,000   $ 35,000,000 $ 65,000,000 $ 148,000,000
Percentage of total commercial mortgage loans representing amortized cost 0.20%   1.20%   0.20% 0.40% 0.80%
Number of troubled debt restructuring extensions | loan             2
Debt instrument, term 3 years   2 years        
Financing Receivable, Modifications Contracts Modified During Period, Principal Balance         $ 10,000,000    
Number of extinguishment of modified loans | Loan         2    
Extinguishment of debt, amount         $ 84,000,000    
Commercial mortgages: | Minimum              
Net Investment Income [Line Items]              
Debt instrument, term             17 months
Commercial mortgages: | Maximum              
Net Investment Income [Line Items]              
Debt instrument, term             4 years
Agricultural mortgages:              
Net Investment Income [Line Items]              
Number of loans split into notes | note         3    
Amortized cost         $ 9,000,000    
Percentage of total commercial mortgage loans representing amortized cost         0.30%