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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)	Dec. 31, 2025 rigs
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	46
Number of jackups leased by ARO	7
Held-for-sale
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	1
Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	15
Floaters [Member] | Held-for-sale
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	1
Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	24
Jackups [Member] | Held-for-sale
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
Other [Member] | Held-for-sale
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	9
ARO | Held-for-sale
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	0
North & South America (Excluding Brazil) [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	8
North & South America (Excluding Brazil) [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	5
North & South America (Excluding Brazil) [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	3
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	17
Europe & Mediterranean [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	6
Europe & Mediterranean [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	11
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
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	4
Asia Pacific [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	1
Asia Pacific [Member] | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	3
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
Middle East and Africa
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	16
Middle East and Africa | Floaters [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	2
Middle East and Africa | Jackups [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
Middle East and Africa | Other [Member]
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	7
Middle East and Africa | ARO
Segment Reporting Information [Line Items]
Total number of contract drilling rigs	9

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Number of jackups leased to ARO

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Total Number Of Contract Drilling Rigs

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