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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2019
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: | 2019 | 2018 | 2019 | 2018
Completion and Production | $ | 3,506 |  | $ | 4,170 |  | $ | 10,973 |  | $ | 12,141 |
Drilling and Evaluation | 2,044 |  | 2,002 |  | 6,244 |  | 5,918 |
Total revenue | $ | 5,550 |  | $ | 6,172 |  | $ | 17,217 |  | $ | 18,059 |
Revenue by geographic region: |  |  |  |
North America | $ | 2,949 |  | $ | 3,739 |  | $ | 9,551 |  | $ | 11,090 |
Latin America | 608 |  | 522 |  | 1,766 |  | 1,458 |
Europe/Africa/CIS | 831 |  | 757 |  | 2,402 |  | 2,199 |
Middle East/Asia | 1,162 |  | 1,154 |  | 3,498 |  | 3,312 |
Total revenue | $ | 5,550 |  | $ | 6,172 |  | $ | 17,217 |  | $ | 18,059 |

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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=118956577&loc=SL49130545-203045 + Details
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