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Property and Equipment - Schedule of Property and Equipment, at Cost (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Property, Plant and Equipment [Line Items] |  |
Property and equipment, at cost | $ 6,981,861 | $ 6,904,731
Drilling equipment and facilities |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, at cost | 6,712,461 | 6,650,034
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, at cost | 185,718 | 197,789
Other |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, at cost | $ 83,682 | $ 56,908

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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