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Income Taxes - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) Jurisdictions | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Income Tax Disclosure [Line Items] |  |  |
Minimum number of jurisdictions to Schlumberger operates | Jurisdictions | 100 |  |
US federal statutory rate | 21.00% | 21.00% | 21.00%
Restructuring and other charges | $ 12,515 | $ 12,901 | $ 141
Deferred tax assets, valuation allowances relating to net operating losses in certain countries | 127 | 82 |
Foreign tax credits | 106 | 312 |
Deferred tax assets, capital losses | 54 |  |
Net operating losses | 421 | 144 |
Accrued interest and penalties | 184 | 188 | 205
Domestic Country |  |  |
Income Tax Disclosure [Line Items] |  |  |
Restructuring and other charges | 3,961 | 8,769 | 102
Foreign Country |  |  |
Income Tax Disclosure [Line Items] |  |  |
Restructuring and other charges | $ 8,554 | $ 4,132 | $ 39
Minimum |  |  |
Income Tax Disclosure [Line Items] |  |  |
US federal statutory rate | 0.00% |  |
Maximum |  |  |
Income Tax Disclosure [Line Items] |  |  |
US federal statutory rate | 35.00% |  |

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