| **Segment Information (Details 2) (USD $)In Millions, unless otherwise specified** | 12 Months Ended |
|------------------------------------------------------------------------------------|-----------------|
||
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | $ 2,910         | $ 2,461 | $ 1,491 |
| Depreciation and Amortization                                                      | 1,568           | 1,321 | 1,069 |
| North America                                                                      |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 1,373           | 1,243 | 599 |
| Depreciation and Amortization                                                      | 750             | 625 | 437 |
| Latin America                                                                      |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 234             | 274 | 191 |
| Depreciation and Amortization                                                      | 225             | 202 | 174 |
| Europe/Africa/Russia Caspian                                                       |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 374             | 357 | 312 |
| Depreciation and Amortization                                                      | 257             | 236 | 231 |
| Middle East/Asia Pacific                                                           |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 345             | 228 | 206 |
| Depreciation and Amortization                                                      | 234             | 207 | 187 |
| Industrial Services and Other                                                      |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 563             | 325 | 177 |
| Depreciation and Amortization                                                      | 55              | 49 | 37 |
| Total Operations                                                                   |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 2,889           | 2,427 | 1,485 |
| Depreciation and Amortization                                                      | 1,521           | 1,319 | 1,066 |
| Corporate and Other                                                                |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 21              | 34 | 6 |
| Depreciation and Amortization                                                      | 47              | 2 | 3 |
| Total                                                                              |            |   |   |
| **Segment reporting information**                                                  |            |   |   |
| Capital Expenditures                                                               | 2,910           | 2,461 | 1,491 |
| Depreciation and Amortization                                                      | $ 1,568         | $ 1,321 | $ 1,069 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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