Retirement Benefits - Schedule of Weighted-Average Actuarial Assumptions Used to Measure Net Periodic Benefit Cost and Benefit Obligations (Details) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Other Postretirement Benefits | |||
| Net Periodic Benefit Credit | |||
| Discount rate | 5.18% | 5.23% | 4.86% |
| Benefit Obligation | |||
| Discount rate | 5.39% | 5.18% | 5.23% |
| United States | Pension Plan | |||
| Net Periodic Benefit Credit | |||
| Discount rate | 5.27% | 5.27% | 4.88% |
| Average increase in compensation | 3.79% | 3.81% | 3.81% |
| Expected return on plan assets | 7.00% | 7.00% | 7.00% |
| Benefit Obligation | |||
| Discount rate | 5.49% | 5.27% | 5.27% |
| Average increase in compensation | 3.67% | 3.79% | 3.76% |
| Non-U.S. Pension Benefits | Pension Plan | |||
| Net Periodic Benefit Credit | |||
| Discount rate | 4.36% | 4.19% | 4.24% |
| Average increase in compensation | 2.65% | 2.73% | 2.76% |
| Expected return on plan assets | 4.47% | 4.47% | 5.22% |
| Benefit Obligation | |||
| Discount rate | 4.49% | 4.36% | 4.19% |
| Average increase in compensation | 2.61% | 2.65% | 2.73% |