Income Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Jun. 30, 2025 |
|
| Income Taxes | |||||
| Effective income tax rate reconciliation, percent, total | 28.30% | 41.00% | 25.20% | 24.90% | |
| Income tax expense (benefit), discrete tax items | $ 0.3 | $ 7.5 | $ (3.6) | $ 2.3 | |
| Share-based compensation excess tax expense (benefit) | (0.7) | (0.4) | (0.7) | (4.7) | |
| Tax expense (benefit) on sale | 0.0 | (2.6) | $ 0.0 | ||
| Income tax expense (benefit), other immaterial discrete tax items, net | $ 1.0 | 7.9 | $ (0.3) | $ 7.0 | |
| Income tax expense (benefit), non-deductible portion of the arbitration award | $ 7.8 | ||||