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Employee Benefit Plans - Actuarial Assumptions - Tabular Disclosure (Details) | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023
Significant actuarial assumptions |  |  |
Discount rate for interest cost (as a percent) | 5.20% | 5.00% | 4.30%
Expected rate of return on plan assets (as a percent) | 6.00% | 5.80% | 4.40%
Discount rate for year-end benefit obligation (as a percent) | 5.40% | 5.10% | 4.60%

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