Fair Value - Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Jun. 30, 2026 |
|---|---|---|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Investments in equity securities | $ 335 | $ 467 |
| Redeemable noncontrolling interests | (65) | (63) |
| Total | 270 | 404 |
| Level 1 | ||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Investments in equity securities | 335 | 467 |
| Redeemable noncontrolling interests | 0 | 0 |
| Total | 335 | 467 |
| Level 2 | ||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Investments in equity securities | 0 | 0 |
| Redeemable noncontrolling interests | 0 | 0 |
| Total | 0 | 0 |
| Level 3 | ||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Investments in equity securities | 0 | 0 |
| Redeemable noncontrolling interests | (65) | (63) |
| Total | $ (65) | $ (63) |