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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details) | Jun. 30, 2019 jackup
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Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 81
Number of Rigs Owned by ARO | 7
Number of jackups leased by ARO | 9
Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 28
Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 44
Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 9
ARO |
Segment Reporting Information [Line Items] |
Number of Rigs Owned by ARO | 7
North & South America (Excl. Brazil) |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 21
North & South America (Excl. Brazil) | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 12
North & South America (Excl. Brazil) | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 9
Europe & Mediterranean |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 22
Europe & Mediterranean | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 5
Europe & Mediterranean | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 17
Middle East & Africa(2) |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 25
Middle East & Africa(2) | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 5
Middle East & Africa(2) | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 11
Middle East & Africa(2) | Other |
Segment Reporting Information [Line Items] |
Number of jackups leased by ARO | 9
Middle East & Africa(2) | ARO |
Segment Reporting Information [Line Items] |
Number of Rigs Owned by ARO | 7
Asia & Pacific Rim |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 11
Asia & Pacific Rim | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 4
Asia & Pacific Rim | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 7
Construction in Progress [Member] | Asia & Pacific Rim |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Construction in Progress [Member] | Asia & Pacific Rim | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Construction in Progress [Member] | Asia & Pacific Rim | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0

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