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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2021
Revenue [Abstract] |
Disaggregation of Revenue | The following table presents information on our disaggregated revenue.
Millions of dollars |  | Three Months Ended March 31
Revenue by segment: |  |  | 2021 | 2020
Completion and Production |  |  | $ | 1,870 |  | $ | 2,962 |
Drilling and Evaluation |  |  | 1,581 |  | 2,075 |
Total revenue |  |  | $ | 3,451 |  | $ | 5,037 |
Revenue by geographic region: |  |  |  |
North America |  |  | $ | 1,404 |  | $ | 2,460 |
Latin America |  |  | 535 |  | 516 |
Europe/Africa/CIS |  |  | 634 |  | 831 |
Middle East/Asia |  |  | 878 |  | 1,230 |
Total revenue |  |  | $ | 3,451 |  | $ | 5,037 |

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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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