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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2020
Revenue [Abstract] |
Disaggregation of Revenue | The following table presents information on our disaggregated revenue.
Millions of dollars | Three Months Ended September 30 |  | Nine Months Ended September 30 |
Revenue by segment: | 2020 | 2019 | 2020 | 2019
Completion and Production | $ | 1,574 |  | $ | 3,506 |  | $ | 6,029 |  | $ | 10,973 |
Drilling and Evaluation | 1,401 |  | 2,044 |  | 5,179 |  | 6,244 |
Total revenue | $ | 2,975 |  | $ | 5,550 |  | $ | 11,208 |  | $ | 17,217 |
Revenue by geographic region: |  |  |  |
North America | $ | 984 |  | $ | 2,949 |  | $ | 4,493 |  | $ | 9,551 |
Latin America | 380 |  | 608 |  | 1,242 |  | 1,766 |
Europe/Africa/CIS | 649 |  | 831 |  | 2,171 |  | 2,402 |
Middle East/Asia | 962 |  | 1,162 |  | 3,302 |  | 3,498 |
Total revenue | $ | 2,975 |  | $ | 5,550 |  | $ | 11,208 |  | $ | 17,217 |

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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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