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PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2026 USD ($) | Jul. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) | Jun. 30, 2026 USD ($) ft² rig | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) ft² rig | Jun. 30, 2025 USD ($) | Oct. 31, 2025 USD ($) rig | Sep. 30, 2025 USD ($) ft² rig
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Depreciation |  |  |  | $ 162,800 | $ 160,800 | $ 487,600 | $ 405,100 |  |
Abandonment expense | $ 11,400 |  |  |  |  |  |  |  |
Partial settlement insurer amount |  |  |  | 25,000 |  |  |  |  |
Gain on involuntary conversion |  |  |  | 13,581 | 0 | 13,581 | 0 |  |
Insurance proceeds from involuntary conversion |  |  |  |  |  | 2,500 | 2,366 |  |
Assets held-for-sale |  |  |  | 12,659 |  | 12,659 |  |  | $ 15,231
Asset impairment charges |  |  |  | $ 1,153 | 173,258 | 130,340 | 175,102 |  |
Disposals |  |  |  |  |  | 17,283 |  |  |
Non-cash impairment charge for assets previously classified as held-for-sale |  |  |  |  |  | $ 2,800 |  |  |
Leasable square feet | ft² |  |  |  | 371,000 |  | 371,000 |  |  |
Proceeds from real estate asset sales |  |  |  |  |  | $ 127,667 | 0 |  |
Gain on disposal of sale of assets |  |  |  | $ 114,800 |  | 114,800 |  |  |
Gain on reimbursement of drilling equipment |  |  |  | 6,036 | 6,773 | 18,099 | 26,149 |  |
North America Solutions |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Number of rigs, plan to scrap | rig |  |  |  |  |  |  |  | 30 |
Number of rigs, previously decommissioned | rig |  |  |  |  |  |  |  | 10 |
Asset impairment charges |  |  |  | 0 | 0 | 97,922 | 1,507 |  |
Offshore Solutions |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Number of rigs, plan to scrap | rig |  |  |  |  |  |  |  | 3 |
Asset impairment charges |  |  |  | $ 0 | $ 0 | $ 2,128 | $ 0 |  |
International Solutions |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Number of rigs, held-for -sale | rig |  |  |  | 2 |  | 2 |  |  |
Asset impairment charges |  |  |  | $ 1,200 |  | $ 23,300 |  |  |
Estimated scrap value |  |  |  | $ 200 |  | 200 |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Area of real estate property | ft² |  |  |  |  |  |  |  |  | 371,000
Assets held-for-sale |  |  |  |  |  |  |  |  | $ 12,000
Number of rigs, held-for -sale | rig |  |  |  |  |  |  |  | 6 | 16
Net book value of assets held-for-sale |  |  |  |  |  |  |  | $ 6,400 | $ 3,200
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Offshore Solutions |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Additional assets, held-for-sale |  |  | $ 2,200 |  |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | International Solutions |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Disposals |  |  |  |  |  | $ 23,500 |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Insurance proceeds from involuntary conversion |  | $ 22,500 |  |  |  |  |  |  |

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