Summary of Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) Country	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Feb. 29, 2016 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Amortization expenses of capitalized investments	$ 465	$ 449	$ 317
Number of countries in which Schlumberger conducts business | Country	85
Number of reportable segments accounted for greater than 10% of accounts receivable | Country	0
ASU No. 2016-02
Organization And Summary Of Significant Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle effect of additional assets and liabilities				$ 1,200
United States | Customer Concentration Risk
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	23.00%
Other Assets and Other Liabilities | Canada
Organization And Summary Of Significant Accounting Policies [Line Items]
Asset retirement obligation	$ 268
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of countries in which Schlumberger conducts business | Country	85
Schlumberger Production Management
Organization And Summary Of Significant Accounting Policies [Line Items]
Unamortized investments	$ 4,065	$ 2,458
Schlumberger Production Management | Revenue | Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	5.00%	5.00%	5.00%