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Commitments and Contingencies - Commitments (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) item | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Commitments and Contingencies |  |  |
Rental expense relating to operating leases | $ | $ 15.7 | $ 17.2 | $ 15.0
Minimum |  |  |
Commitments and Contingencies |  |  |
Lease term | 30 days |  |
Joint ventures |  |  |
Commitments and Contingencies |  |  |
Number of drilling units to backstop entity share to purchase in the event of insufficient cash | item | 25 |  |

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- Definition Represents the number of drilling units to backstop entity share to purchase in the event of insufficient funds. + References No definition available. + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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