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LEASES - Operating and Finance Leases, Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Leases [Abstract] |  |
Operating Lease, Right-of-Use Asset | $ 65 | $ 61
Current operating lease liabilities (Note 17) | 15 | 19
Operating Lease, Liability, Noncurrent | 51 | 43
Operating Lease, Liability | 66 | 62
Finance Lease, Right-of-Use Asset | 264 | 252
Finance Lease, Liability, Current | 8 | 6
Finance Lease, Liability, Noncurrent | 276 | 256
Finance lease obligations | $ 284 | $ 262
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | OTHER NON-CURRENT ASSETS | OTHER NON-CURRENT ASSETS
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accrued and other current liabilities | Accrued and other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | OTHER NON-CURRENT LIABILITIES | OTHER NON-CURRENT LIABILITIES
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 Enumeration] | Current portion of long-term debt | Current portion of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | LONG-TERM DEBT | LONG-TERM DEBT

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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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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