CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 1,608	$ 1,267
Currency translation adjustments
Unrealized net change arising during the period	(88)	(77)
Marketable securities
Unrealized gain arising during the period	11	72
Derivatives
Net derivatives gain (loss) on hedge transactions	16	(154)
Reclassification to net income of net realized (gain) loss (see Note 10)	(3)	80
Actuarial gain (loss)
Amortization to net income of net actuarial loss (see Note 14)	41	74
Prior service cost
Amortization to net income of net prior service cost (see Note 14)	32	31
Income taxes on pension and other postretirement benefit plans	(10)	(14)
Comprehensive income	1,607	1,279
Comprehensive income attributable to noncontrolling interests	16	8
Comprehensive income attributable to Schlumberger	$ 1,591	$ 1,271