v3.25.1
Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)
Mar. 31, 2025
rigs
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 52
Held for sale (1)  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 3
Floaters  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 18
Floaters | Held for sale (1)  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 3
Jackups  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 27
Jackups | Held for sale (1)  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Other  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 7
Other | Held for sale (1)  
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 (1)  
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 15
Middle East and Africa | Floaters  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 1
Middle East and Africa | Jackups  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 7
Middle East and Africa | Other  
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
Europe  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 17
Europe | Floaters  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 6
Europe | Jackups  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 11
Europe | Other  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Europe | ARO  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Americas [Member]  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 11
Americas [Member] | Floaters  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 6
Americas [Member] | Jackups  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 5
Americas [Member] | Other  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Americas [Member] | ARO  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Asia Pacific  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 6
Asia Pacific | Floaters  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 2
Asia Pacific | Jackups  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 4
Asia Pacific | Other  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0
Asia Pacific | ARO  
Segment Reporting Information [Line Items]  
Total Number Of Contract Drilling Rigs 0