| **Segment Information (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 6 Months Ended |
|----------------------------------------------------------------------------------|----------------|----------------|
||
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | $ 5,326        | $ 4,741        | $ 10,681 | $ 9,266 |
| Profit (Loss)                                                                    | 589            | 563            | 1,162 | 1,151 |
| Industrial Services [Member]                                                     |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 321            | 295            | 602 | 542 |
| Profit (Loss)                                                                    | 44             | 44             | 66 | 67 |
| Total Operations [Member]                                                        |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 5,326          | 4,741          | 10,681 | 9,266 |
| Profit (Loss)                                                                    | 721            | 680            | 1,439 | 1,387 |
| Corporate and Other [Member]                                                     |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 0              | 0              | 0 | 0 |
| Profit (Loss)                                                                    | (82)           | (63)           | (173) | (130) |
| Interest Expense, Net [Member]                                                   |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 0              | 0              | 0 | 0 |
| Profit (Loss)                                                                    | (50)           | (54)           | (104) | (106) |
| North America [Member]                                                           |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 2,672          | 2,372          | 5,535 | 4,730 |
| Profit (Loss)                                                                    | 357            | 434            | 758 | 889 |
| Latin America [Member]                                                           |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 604            | 544            | 1,177 | 1,018 |
| Profit (Loss)                                                                    | 77             | 71             | 144 | 133 |
| Europe / Africa / Russia Caspian [Member]                                        |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 925            | 817            | 1,818 | 1,599 |
| Profit (Loss)                                                                    | 156            | 44             | 309 | 132 |
| Middle East / Asia Pacific [Member]                                              |           |           |   |   |
| **Summarized financial information**                                             |           |           |   |   |
| Revenue                                                                          | 804            | 713            | 1,549 | 1,377 |
| Profit (Loss)                                                                    | $ 87           | $ 87           | $ 162 | $ 166 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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 SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 10
+ Details**Name:**us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688
+ Details**Name:**us-gaap_SalesRevenueNet**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |