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Segment Information (Narrative) (Details) - 12 months ended Dec. 31, 2024	Reportable_segment jackup	rigs	drillship	Total	contract
Segment Reporting Information [Line Items]
Number of operating segments | Reportable_segment	4
Number of jackups leased by ARO		7
Number of drilling management contracts | contract					2
Total number of contract drilling rigs		53
Number of ARO Rigs expected to be ordered in the near term | jackup	1
ARO Rigs Under Construction	1		3
Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs		18
Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs		28
ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs		9
Jackup Rigs Member [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs | drillship			28
Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs				7

X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

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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.

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- Definition

ARO Rig Currently Under Construction

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- Definition

Number of ARO Rigs expected to be ordered in the near term

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- Definition

Number Of Contract Drilling Rig

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Number of Drilling Management Contracts

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Number of jackups leased to ARO

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Total Number Of Contract Drilling Rigs

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