INVESTMENTS - Schedule of Total Gains and Losses on Equity Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Schedule of Investments [Abstract] | |||
| Total gains (losses) recognized on equity securities | $ 21 | $ (13) | $ (9) |
| Less: Net gains (losses) recognized on equity securities sold or impaired | 0 | 0 | 2 |
| Unrealized gains (losses) recognized on equity securities held at end of period | $ 21 | $ (13) | $ (11) |