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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue [Abstract] |
Disaggregation of Revenue | The following table presents information on our disaggregated revenue.
| Year Ended December 31
Millions of dollars | 2020 | 2019 | 2018
Revenue by segment: |  |  |
Completion and Production | $ | 7,839 |  | $ | 14,031 |  | $ | 15,973 |
Drilling and Evaluation | 6,606 |  | 8,377 |  | 8,022 |
Total revenue | $ | 14,445 |  | $ | 22,408 |  | $ | 23,995 |
Revenue by geographic region: |  |  |
North America | $ | 5,731 |  | $ | 11,884 |  | $ | 14,431 |
Latin America | 1,668 |  | 2,364 |  | 2,065 |
Europe/Africa/CIS | 2,813 |  | 3,285 |  | 2,945 |
Middle East/Asia | 4,233 |  | 4,875 |  | 4,554 |
Total revenue | $ | 14,445 |  | $ | 22,408 |  | $ | 23,995 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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