| **Segment Information - (Details) - USD ($) $ in Millions** | 3 Months Ended | 9 Months Ended |
|-------------------------------------------------------------|----------------|----------------|
||
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | $ 3,786        | $ 6,250        | $ 12,348 | $ 17,916 |
| Profit (Loss) Before Taxes                                  | (156)          | 602            | (1,181) | 1,669 |
| Corporate and other                                         |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 0              | 0              | 0 | 0 |
| Profit (Loss) Before Taxes                                  | (81)           | (71)           | (240) | (209) |
| Interest expense, net                                       |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 0              | 0              | 0 | 0 |
| Profit (Loss) Before Taxes                                  | (55)           | (59)           | (162) | (175) |
| Restructuring charges                                       |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 0              | 0              | 0 | 0 |
| Profit (Loss) Before Taxes                                  | (98)           | 0              | (747) | 0 |
| Litigation settlements                                      |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     |           |           | 0 | 0 |
| Profit (Loss) Before Taxes                                  |           |           | 13 | (62) |
| North America                                               |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 1,368          | 3,155          | 4,872 | 8,774 |
| Profit (Loss) Before Taxes                                  | (169)          | 380            | (545) | 978 |
| Latin America                                               |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 439            | 571            | 1,371 | 1,645 |
| Profit (Loss) Before Taxes                                  | 48             | 71             | 122 | 172 |
| Europe/Africa/Russia Caspian                                |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 791            | 1,114          | 2,555 | 3,269 |
| Profit (Loss) Before Taxes                                  | 90             | 91             | 117 | 421 |
| Middle East/Asia Pacific                                    |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 849            | 1,077          | 2,621 | 3,241 |
| Profit (Loss) Before Taxes                                  | 69             | 155            | 182 | 448 |
| Industrial Services                                         |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 339            | 333            | 929 | 987 |
| Profit (Loss) Before Taxes                                  | 40             | 35             | 79 | 96 |
| Total Operations                                            |           |           |   |   |
| **Summarized financial information [Abstract]**             |           |           |   |   |
| Revenue                                                     | 3,786          | 6,250          | 12,348 | 17,916 |
| Profit (Loss) Before Taxes                                  | $ 78           | $ 732          | $ (45) | $ 2,115 |

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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.
+ References
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| - References
No definition available.
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