INVESTMENTS - Schedule of Total Gains and Losses on Equity Securities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Schedule of Investments [Abstract] | ||||
| Total gains (losses) recognized on equity securities | $ (12) | $ 18 | $ (13) | $ 28 |
| Less: Net gains (losses) recognized on equity securities sold | (1) | 0 | (1) | 0 |
| Unrealized gains (losses) recognized on equity securities held at end of period | $ (11) | $ 18 | $ (12) | $ 28 |