CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$ 1,616	$ 2,100	$ 3,224	$ 3,367
Currency translation adjustments
Unrealized net change arising during the period	58	(157)	(30)	(234)
Marketable securities
Unrealized gain arising during the period	19	11	30	83
Derivatives
Net derivatives gain (loss) on hedge transactions	(3)	49	13	(104)
Reclassification to net income of net realized (gain) loss (see Note 11)	9	(34)	6	45
Actuarial loss
Actuarial loss arising during the period		(6)		(6)
Amortization to net income of net actuarial loss (see Note 15)	59	76	100	152
Prior service cost
Amortization to net income of net prior service cost (see Note 15)	24	31	56	63
Income taxes on pension and other postretirement benefit plans	(10)	(15)	(20)	(31)
Comprehensive income	1,772	2,055	3,379	3,335
Comprehensive income attributable to noncontrolling interests	21	5	37	13
Comprehensive income attributable to Schlumberger	$ 1,751	$ 2,050	$ 3,342	$ 3,322