Summary of Accounting Policies - Additional Information (Detail) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($) Country shares	Dec. 31, 2015 USD ($) Country shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 shares
Organization And Summary Of Significant Accounting Policies [Line Items]
Fixed Income Investments, held to maturity	$ 418	$ 418	$ 442
Fixed Income Investments, held to maturity, 2017	107	107
Fixed Income Investments, held to maturity, 2018	298	298
Fixed Income Investments, held to maturity, 2019	12	12
Fixed Income Investments, held to maturity, 2020	1	1
Carrying value of marketable securities	41	41	81
Fair value of marketable securities	41	$ 41	$ 91
Other than temporary impairment charge recorded	$ 40
Number of countries in which Schlumberger conducts business | Country	85	85
Number of reportable segments accounted for greater than 10% of accounts receivable | Country		2
Employee stock options to purchase | shares	20	20	5	12
Schlumberger Production Management
Organization And Summary Of Significant Accounting Policies [Line Items]
Unamortized investments	$ 1,829	$ 1,829	$ 1,411