INVESTMENTS - Investment Gains (Losses), Net (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Net Investment Income [Line Items] | ||
| Investment gains (losses), net | $ (29) | $ (14) |
| Fixed maturities | ||
| Net Investment Income [Line Items] | ||
| Investment gains (losses), net | (20) | (8) |
| Mortgage loans on real estate | ||
| Net Investment Income [Line Items] | ||
| Investment gains (losses), net | (5) | (7) |
| Other | ||
| Net Investment Income [Line Items] | ||
| Investment gains (losses), net | $ (4) | $ 1 |