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Summary of Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) Country | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |
Total backlog | $ | $ 2,600 |  |
Percentage of revenue expected to be recognized over next 12 months | 60.00% |  |
Amortization expenses of capitalized investments | $ | $ 396 | $ 731 | $ 568
Number of countries in which Schlumberger conducts business | Country | 120 |  |
Number of reportable segments accounted for greater than 10% of accounts receivable | Country | 0 |  |
Mexico | Customer Concentration Risk |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |
Concentration risk, percentage | 14.00% |  |
Minimum |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |
Revenue recognition period | 30 days |  |
Number of countries in which Schlumberger conducts business | Country | 120 |  |
Maximum |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |
Revenue recognition period | 60 days |  |
Asset Performance Solutions |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |
Unamortized investments | $ | $ 1,713 | $ 3,724 |

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