v2.3.0.15

Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details) | 9 Months Ended
--- | ---
Sep. 30, 2011
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 76 | [1]
Deepwater [Member] | North & South America (Excl. Brazil) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 6 |
Jackup [Member] | North & South America (Excl. Brazil) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 15 |
Other [Member] | North & South America (Excl. Brazil) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs |  |
North & South America (Excl. Brazil) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 21 | [1]
Deepwater [Member] | Brazil [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 6 |
Midwater [Member] | Brazil [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 5 |
Other [Member] | Brazil [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs |  |
Brazil [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 11 | [1]
Deepwater [Member] | Europe & Mediterranean [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 1 |
Jackup [Member] | Europe & Mediterranean [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 9 |
Other [Member] | Europe & Mediterranean [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs |  |
Europe & Mediterranean [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 10 | [1]
Deepwater [Member] | Middle East & Africa [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 3 |
Midwater [Member] | Middle East & Africa [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 1 |
Jackup [Member] | Middle East & Africa [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 12 |
Other [Member] | Middle East & Africa [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs |  |
Middle East & Africa [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 16 | [1]
Deepwater [Member] | Asia & Pacific Rim [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 1 |
Jackup [Member] | Asia & Pacific Rim [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 10 |
Other [Member] | Asia & Pacific Rim [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 1 |
Asia & Pacific Rim [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 12 | [1]
Deepwater [Member] | Asia & Pacific Rim (under construction) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 4 |
Jackup [Member] | Asia & Pacific Rim (under construction) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 2 |
Other [Member] | Asia & Pacific Rim (under construction) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs |  |
Asia & Pacific Rim (under construction) [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 6 | [1]
Deepwater [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 21 |
Midwater [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 6 |
Jackup [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 48 |
Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Total Number Of Contract Drilling Rigs | 1 |
[1] | We have two deepwater drilling management contracts not included in the table above. In October 2011, we entered into an agreement with Keppel FELS Limited to construct an ultra-high specification harsh environment jackup rig, which is not included in the table above.

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + Details
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