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Income Taxes - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2018
USD ($)
Jurisdictions
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Income Tax Disclosure [Line Items]      
Minimum number of jurisdictions to Schlumberger operates | Jurisdictions 100    
US federal statutory rate 21.00% 35.00% 35.00%
Restructuring and other charges $ 141 $ 3,764 $ 3,820
Deferred tax assets, valuation allowances relating to net operating losses in certain countries 87 119  
Accrued interest and penalties 205 195 178
Domestic Country      
Income Tax Disclosure [Line Items]      
Restructuring and other charges 102 533,000 1,848
Foreign Country      
Income Tax Disclosure [Line Items]      
Restructuring and other charges $ 39 $ 3,231 $ 1,972
Minimum      
Income Tax Disclosure [Line Items]      
US federal statutory rate 0.00%    
Maximum      
Income Tax Disclosure [Line Items]      
US federal statutory rate 35.00%