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Lease Commitments - Schedule of Lease Balances on the Balance Sheet (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Leases [Abstract] |  |
Operating lease assets | $ 331.8 | $ 298.6
Accumulated depreciation | 291.2 | 261.7
Amortization of finance lease assets | (79.3) | (67.4)
Total Operating And Finance Lease, Right-Of-Use Asset | 543.7 | 492.9
Operating lease liabilities, current | 33.6 | 31.2
Finance lease liabilities, current | 15.2 | 13.4
Operating lease liabilities, noncurrent | 315.3 | 279.7
Finance lease liabilities, noncurrent | 229.3 | 207.3
Total Operating And Finance Lease, Liability | $ 593.4 | $ 531.6
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property, plant and equipment, net | Property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accrued expenses and other liabilities | Accrued expenses and other liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accrued expenses and other liabilities | Accrued expenses and other liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other noncurrent liabilities | Other noncurrent liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other noncurrent liabilities | Other noncurrent liabilities

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