CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 284	$ 523
Currency translation adjustments
Unrealized net change arising during the period	45	17
Marketable securities
Unrealized gain (loss) arising during the period	(4)	3
Cash flow hedges
Net loss on cash flow hedges	11	(85)
Reclassification to net income of net realized loss		94
Actuarial loss
Amortization to net income of net actuarial loss	43	45
Prior service cost
Amortization to net income of net prior service cost	20	25
Income taxes on pension and other postretirement benefit plans	(1)	(7)
Comprehensive income	398	615
Comprehensive income attributable to noncontrolling interests	5	22
Comprehensive income attributable to Schlumberger	$ 393	$ 593