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LEASES - Recognized Right-of-Use Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Sep. 30, 2024
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Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | $ 120,213 | $ 67,076
Real estate properties |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | 113,902 | 66,842
Drilling equipment |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | $ 6,311 | $ 234

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- Definition Amount of lessee's right to use underlying asset under operating 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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