Summary of Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	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