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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details) | Mar. 31, 2020 jackup contract rigs
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Segment Reporting Information [Line Items] |
Number of Drilling Management Contracts | contract | 2
Number of contract drilling rigs (in rigs) | 77
Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 26
Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 42
Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 9
ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | jackup | 7
North & South America (Excl. Brazil) |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 17
North & South America (Excl. Brazil) | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 10
North & South America (Excl. Brazil) | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 7
Europe & the Mediterranean |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 22
Europe & the Mediterranean | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 7
Europe & the Mediterranean | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 15
Middle East & Africa |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 25
Middle East & Africa | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 4
Middle East & Africa | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 12
Middle East & Africa | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 9
Middle East & Africa | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | jackup | 7
Asia & Pacific Rim |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 10
Asia & Pacific Rim | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 3
Asia & Pacific Rim | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 7
Work-in-progress | Asia & Pacific Rim |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Work-in-progress | Asia & Pacific Rim | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Work-in-progress | Asia & Pacific Rim | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 1
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 1
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0

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