| **Segment Information - Schedule of Summarized Financial Information for Assets (Details) - USD ($) $ in Millions** | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 |
|---------------------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | $ 19,034      | $ 24,080      | $ 28,827      |
| Operating Segments | North America                                                                                  |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 3,049         | 6,599         | 9,782         |
| Operating Segments | Latin America                                                                                  |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 1,530         | 2,323         | 2,508         |
| Operating Segments | Europe/ Africa/ Russia Caspian                                                                 |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 2,446         | 3,077         | 4,106         |
| Operating Segments | Middle East/ Asia Pacific                                                                      |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 2,746         | 3,441         | 4,029         |
| Operating Segments | Industrial Services                                                                            |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 631           | 1,106         | 1,260         |
| Shared assets                                                                                                       |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 5,129         | 5,613         | 5,423         |
| Total Operations                                                                                                    |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | 15,531        | 22,159        | 27,108        |
| Corporate                                                                                                           |          |          |          |
| **Segment Reporting Information**                                                                                   |          |          |          |
| Assets                                                                                                              | $ 3,503       | $ 1,921       | $ 1,719       |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878
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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.
+ References
No definition available.
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