CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Revenue	$ 12,646	$ 11,608	$ 35,939	$ 33,360
Interest & other income	79	43	220	105
Gain on formation of OneSubsea				1,028
Expenses
Cost of revenue	9,689	8,926	27,708	26,047
Research & engineering	301	286	893	870
General & administrative	125	110	353	305
Impairment & other				456
Interest	90	98	282	294
Income from continuing operations before taxes	2,520	2,231	6,923	6,521
Taxes on income	556	506	1,530	1,361
Income from continuing operations	1,964	1,725	5,393	5,160
Loss from discontinued operations			(205)	(69)
Net income	1,964	1,725	5,188	5,091
Net income attributable to noncontrolling interests	15	10	52	23
Net income attributable to Schlumberger	1,949	1,715	5,136	5,068
Schlumberger amounts attributable to:
Income from continuing operations	1,949	1,715	5,341	5,137
Loss from discontinued operations			(205)	(69)
Net income attributable to Schlumberger	$ 1,949	$ 1,715	$ 5,136	$ 5,068
Basic earnings per share of Schlumberger:
Income from continuing operations	$ 1.51	$ 1.30	$ 4.11	$ 3.87
Loss from discontinued operations			$ (0.16)	$ (0.05)
Net income	$ 1.51	$ 1.30	$ 3.95	$ 3.82
Diluted earnings per share of Schlumberger:
Income from continuing operations	$ 1.49	$ 1.29	$ 4.07	$ 3.84
Loss from discontinued operations			$ (0.16)	$ (0.05)
Net income	$ 1.49	$ 1.29	$ 3.91	$ 3.79
Average shares outstanding:
Basic	1,294	1,322	1,300	1,326
Assuming dilution	1,310	1,333	1,315	1,336