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LEASES - (Supplemental Balance Sheet Information Schedule) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
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Leases [Abstract] |  |
Operating lease right-of-use assets | $ 256.3 | $ 265.4
Current lease liabilities | 71.6 | 75.3
Non-current operating lease liabilities | 202.2 | 215.8
Total operating lease liabilities | 273.8 | 291.1
Finance lease right-of-use assets | 11.7 | 15.2
Finance lease current lease liabilities | 2.0 | 2.6
Finance lease non-current lease liabilities | 12.5 | 15.2
Total finance lease liabilities | $ 14.5 | $ 17.8
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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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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