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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)	Dec. 31, 2022 rigs contract
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	52
Number of drilling management contracts | contract	2
Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	16
Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	28
Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	8
ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
North & South America (Excluding Brazil) [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	13
North & South America (Excluding Brazil) [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
North & South America (Excluding Brazil) [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	6
North & South America (Excluding Brazil) [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
North & South America (Excluding Brazil) [Member] | ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
Europe & Mediterranean [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	16
Europe & Mediterranean [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	4
Europe & Mediterranean [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	12
Europe & Mediterranean [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
Europe & Mediterranean [Member] | ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
Middle East & Africa [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	17
Middle East & Africa [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	3
Middle East & Africa [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	6
Middle East & Africa [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	8
Middle East & Africa [Member] | ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	6
Asia Pacific [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	2
Asia Pacific [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	4
Asia Pacific [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
Asia Pacific [Member] | ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0

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Number of Drilling Management Contracts

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Total Number Of Contract Drilling Rigs

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