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PROPERTY, PLANT AND EQUIPMENT (Tables) | 12 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
Schedule of Property, Plant and Equipment | Property, plant and equipment as of September 30, 2025 and 2024 consisted of the following:
(in thousands) | Estimated Useful Lives |  | September 30, 2025 |  | September 30, 2024
Drilling services equipment | 2 - 15 years |  | $ | 8,168,906 |  |  | $ | 6,671,975 |
Tubulars | 4 years |  | 597,933 |  |  | 552,773 |
Real estate properties | 10 - 45 years |  | 8,223 |  |  | 48,617 |
Other | 2 - 23 years |  | 620,908 |  |  | 460,857 |
Construction in progress 1 |  |  | 182,942 |  |  | 106,183 |
|  |  | 9,578,912 |  |  | 7,840,405 |
Accumulated depreciation |  |  | (5,265,838) |  |  | (4,824,128) |
Property, plant and equipment, net |  |  | $ | 4,313,074 |  |  | $ | 3,016,277 |
Assets held-for-sale |  |  | $ | 15,231 |  |  | $ | — |
(1)Included in construction in progress are costs for projects in progress to upgrade or refurbish certain rigs in our existing fleet. Additionally, we include other advances for capital maintenance purchase-orders that are open/in process. As these various projects are completed, the costs are then classified to their appropriate useful life category.

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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