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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details) | Sep. 30, 2019 jackup
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Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 81
Number of jackups leased by ARO | 9
Held for Sale |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 28
Floaters | Held for Sale |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 1
Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 44
Jackups | Held for Sale |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 1
Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 9
Other | Held for Sale |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 7
ARO | Held for Sale |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
North & South America (Excl. Brazil) |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 19
North & South America (Excl. Brazil) | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 11
North & South America (Excl. Brazil) | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 8
North & South America (Excl. Brazil) | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
North & South America (Excl. Brazil) | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Europe & Mediterranean |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 21
Europe & Mediterranean | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 6
Europe & Mediterranean | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 15
Europe & Mediterranean | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Europe & Mediterranean | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Middle East & Africa |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 27
Middle East & Africa | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 5
Middle East & Africa | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 13
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) | 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
Asia & Pacific Rim | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Asia & Pacific Rim | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Construction in Progress | Asia & Pacific Rim |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Construction in Progress | Asia & Pacific Rim | Floaters |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 2
Construction in Progress | Asia & Pacific Rim | Jackups |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Construction in Progress | Asia & Pacific Rim | Other |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0
Construction in Progress | Asia & Pacific Rim | ARO |
Segment Reporting Information [Line Items] |
Number of contract drilling rigs (in rigs) | 0

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