v3.26.1
INVESTMENTS - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
investment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
investment
Debt Securities, Available-for-Sale [Line Items]          
Fair value of investments in unrealized loss position $ 9,447   $ 9,447   $ 6,484
Gross unrealized losses on investments in unrealized loss position 399   399   322
Unrealized losses related to fixed maturity securities for less than one year 86   86   32
Unrealized losses related to fixed maturity securities for more than one year 313   313   290
Additional contractual commitments 1,800   1,800    
Cash surrender value of life insurance 2,000   $ 2,000   $ 1,900
Number of investments held as primary beneficiary | investment     0   0
Held to maturity with net carrying value         $ 11
Realized losses for sale 0 $ 0 $ 0 $ 1 1
Variable Interest Entity, Not Primary Beneficiary          
Debt Securities, Available-for-Sale [Line Items]          
Commitments to fund investments 669   669    
Maximum exposure to loss 2,000   2,000   1,900
Investment Grade          
Debt Securities, Available-for-Sale [Line Items]          
Unrealized losses related to fixed maturity securities for less than one year 83   83   29
Unrealized losses related to fixed maturity securities for more than one year 308   308   283
Fixed maturities          
Debt Securities, Available-for-Sale [Line Items]          
Unrealized losses related to fixed maturity securities for less than one year         32
Unrealized losses related to fixed maturity securities for more than one year $ 313   $ 313   $ 290
Issuer One | Investments, Debt Securities Benchmark | Issuer Concentration Risk          
Debt Securities, Available-for-Sale [Line Items]          
Concentration credit risk, less than     0.20%   0.20%
Issuer Two, Less Than | Investments, Debt Securities Benchmark | Issuer Concentration Risk          
Debt Securities, Available-for-Sale [Line Items]          
Concentration credit risk, less than     1.40%   0.40%