Acquisitions and Divestitures - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Diamond Offshore Drilling, Inc.
Business Acquisition [Line Items]
Revenue	$ 3,081,879	$ 3,672,860
Net income (loss)	$ 375,402	$ 358,549
Net income per share, basic (usd per share)	$ 2.26	$ 2.21
Net income per share, diluted (usd per share)	$ 2.19	$ 2.09
Maersk Drilling Merger
Business Acquisition [Line Items]
Revenue			$ 2,218,117
Net income (loss)			$ (19,246)
Net income per share, basic (usd per share)			$ (0.14)
Net income per share, diluted (usd per share)			$ (0.14)

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

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