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v3.21.1

Revenue (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) Division | Mar. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items] |  |
Number of business segments | Division | 2 |
Revenue | $ 3,451 | $ 5,037
Revenue, Performance Obligation, Description of Timing | one year |
North America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 1,404 | 2,460
Latin America [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 535 | 516
Europe/Africa/CIS [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 634 | 831
Middle East/Asia [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 878 | 1,230
Completion And Production [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,870 | 2,962
Drilling And Evaluation [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 1,581 | $ 2,075
Minimum [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, Performance Obligation, Description of Payment Terms | 20 |
Maximum [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, Performance Obligation, Description of Payment Terms | 60 |
Revenue Benchmark [Member] | UNITED STATES |  |
Disaggregation of Revenue [Line Items] |  |
Concentration Risk, Percentage | 39.00% | 47.00%

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