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PROPERTY, PLANT AND EQUIPMENT (Tables) | 9 Months Ended
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Jun. 30, 2026
Property, Plant, and Equipment [Abstract] |
Schedule of Property, Plant and Equipment | Property, plant and equipment as of June 30, 2026 and September 30, 2025 consisted of the following:
(in thousands) | Estimated Useful Lives |  | June 30, 2026 |  | September 30, 2025
Drilling services equipment | 2 - 15 years |  | $ | 7,728,614 |  |  | $ | 8,168,906 |
Tubulars | 4 years |  | 616,790 |  |  | 597,933 |
Real estate properties | 10 - 45 years |  | 5,613 |  |  | 8,223 |
Other | 2 - 23 years |  | 634,193 |  |  | 620,908 |
Construction in progress 1 |  |  | 161,097 |  |  | 182,942 |
|  |  | 9,146,307 |  |  | 9,578,912 |
Accumulated depreciation |  |  | (5,280,975) |  |  | (5,265,838) |
Property, plant and equipment, net |  |  | $ | 3,865,332 |  |  | $ | 4,313,074 |
Assets held-for-sale |  |  | $ | 12,659 |  |  | $ | 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.
Schedule of Assets Held-for-Sale | The following is a summary of the changes in the balance (in thousands) of our assets held-for-sale for the period indicated below:
Balance at September 30, 2025 | $ | 15,231 |
Additions | 17,491 |
Disposals | (17,283) |
Impairment expense | (2,780) |
Balance at June 30, 2026 | $ | 12,659 |

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- Definition Tabular disclosure of long-lived asset held for sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-3 + Details
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- Definition Tabular disclosure of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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