| **Goodwill and Intangible Assets - Schedule of Carrying Amount of Goodwill by Segment (Details) - USD ($)** | 3 Months Ended | 12 Months Ended |
|-------------------------------------------------------------------------------------------------------------|----------------|-----------------|
||
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | $ 6,070,000,000 | $ 6,070,000,000 |   |   |
| Impairments                                                                                                 | $ 0            | $ (17,000,000)  | $ (1,841,000,000) | 0 | (1,858,000,000) | $ 0 | $ 0 |
| Disposition                                                                                                 |           |            |   |   | (139,000,000) |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 11,000,000 |   |   |
| Balance at December 31, 2016                                                                                | 4,084,000,000  |            |   |   | 4,084,000,000 | 6,070,000,000 |   |
| North America                                                                                               |           |            |   |   |   |   |   |
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | 3,097,000,000 | 3,097,000,000 |   |   |
| Impairments                                                                                                 |           |            |   |   | (1,549,000,000) |   |   |
| Disposition                                                                                                 |           |            |   |   | (139,000,000) |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 6,000,000 |   |   |
| Balance at December 31, 2016                                                                                | 1,415,000,000  |            |   |   | 1,415,000,000 | 3,097,000,000 |   |
| Latin America                                                                                               |           |            |   |   |   |   |   |
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | 584,000,000 | 584,000,000 |   |   |
| Impairments                                                                                                 |           |            |   |   | 0 |   |   |
| Disposition                                                                                                 |           |            |   |   | 0 |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 4,000,000 |   |   |
| Balance at December 31, 2016                                                                                | 588,000,000    |            |   |   | 588,000,000 | 584,000,000 |   |
| Europe/ Africa/ Russia Caspian                                                                              |           |            |   |   |   |   |   |
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | 1,068,000,000 | 1,068,000,000 |   |   |
| Impairments                                                                                                 |           |            |   |   | 0 |   |   |
| Disposition                                                                                                 |           |            |   |   | 0 |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 0 |   |   |
| Balance at December 31, 2016                                                                                | 1,068,000,000  |            |   |   | 1,068,000,000 | 1,068,000,000 |   |
| Middle East/ Asia Pacific                                                                                   |           |            |   |   |   |   |   |
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | 819,000,000 | 819,000,000 |   |   |
| Impairments                                                                                                 |           |            |   |   | 0 |   |   |
| Disposition                                                                                                 |           |            |   |   | 0 |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 1,000,000 |   |   |
| Balance at December 31, 2016                                                                                | 820,000,000    |            |   |   | 820,000,000 | 819,000,000 |   |
| Industrial Services                                                                                         |           |            |   |   |   |   |   |
| **Changes in carrying amount of goodwill**                                                                  |           |            |   |   |   |   |   |
| Balance at December 31, 2015                                                                                |           |            |   | $ 502,000,000 | 502,000,000 |   |   |
| Impairments                                                                                                 |           |            |   |   | (309,000,000) |   |   |
| Disposition                                                                                                 |           |            |   |   | 0 |   |   |
| Currency translation adjustments and other                                                                  |           |            |   |   | 0 |   |   |
| Balance at December 31, 2016                                                                                | $ 193,000,000  |            |   |   | $ 193,000,000 | $ 502,000,000 |   |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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| X                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
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No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
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