Leases - ROU Assets and Liabilities (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Jun. 30, 2025 |
|---|---|---|
| Operating lease assets: | ||
| Other assets | $ 30.1 | $ 35.4 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets |
| Operating lease liabilities: | ||
| Accrued liabilities | $ 8.8 | $ 8.0 |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Accrued liabilities | Accrued liabilities |
| Other liabilities | $ 28.0 | $ 34.9 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Other liabilities | Other liabilities |
| Total operating lease liabilities | $ 36.8 | $ 42.9 |
| Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Accrued liabilities, Other liabilities | Accrued liabilities, Other liabilities |