CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 6,774	$ 5,519	$ 5,007
Currency translation adjustments
Unrealized net change arising during the period	(151)	76	(82)
Marketable securities
Unrealized gain arising during the period	35	141
Derivatives
Net derivatives gain (loss) on hedging transactions	49	92	(79)
Reclassification to net income of net realized (gain) loss	(50)	(36)	8
Actuarial gain (loss)
Actuarial gain (loss) arising during the period	1,328	(1,016)	(1,008)
Amortization to net income of net actuarial loss	300	187	133
Prior service cost
Prior service gain arising during the period			1
Amortization to net income of net prior service cost	125	125	121
Income taxes on pension and other postretirement benefit plans	(302)	100	117
Comprehensive income	8,108	5,188	4,218
Comprehensive income attributable to noncontrolling interests	42	29	10
Comprehensive income attributable to Schlumberger	$ 8,066	$ 5,159	$ 4,208