Pension and Other Benefit Plans - Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
US Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 62	$ 86	$ 72
Interest cost on projected benefit obligation	177	170	164
Expected return on plan assets	(235)	(229)	(208)
Amortization of prior service cost	12	12	12
Amortization of net loss	79	123	82
Total pension cost	95	162	122
International
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	110	167	126
Interest cost on projected benefit obligation	311	297	288
Expected return on plan assets	(517)	(498)	(450)
Amortization of prior service cost	122	121	120
Amortization of net loss	78	170	94
Total pension cost	104	257	178
Postretirement medical plan
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	30	42	43
Interest cost on projected benefit obligation	47	48	60
Expected return on plan assets	(57)	(52)	(45)
Amortization of prior service cost	(32)	(32)	(4)
Amortization of net loss		13	1
Total pension cost	$ (12)	$ 19	$ 55