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LEASES - (Supplemental Balance Sheet Information Schedule) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Leases [Abstract] |  |
Operating lease right-of-use assets | $ 262.6 | $ 288.9
Current lease liabilities | 76.4 | 76.2
Non-current operating lease liabilities | 220.1 | 223.2
Total operating lease liabilities | 296.5 | 299.4
Finance lease right-of-use assets | 14.5 | 26.4
Finance lease current lease liabilities | 1.9 | 6.4
Finance lease non-current lease liabilities | 15.0 | 22.5
Total finance lease liabilities | $ 16.9 | $ 28.9
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other assets | Other assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Other Liabilities, Current | Other Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property, plant and equipment, net | Property, plant and equipment, net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Current portion of debt | Current portion of debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Long-term debt | Long-term debt

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