CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Revenue	$ 48,580		$ 45,266		$ 41,731
Interest and other income	291		165		172
Gain on formation of OneSubsea			1,028
Expenses
Cost of revenue	37,398		35,331		32,885
Research & engineering	1,217		1,174		1,153
General & administrative	475		416		405
Merger & integration					128
Impairments & other	1,773		456		33
Interest	369		391		340
Income from continuing operations before taxes	7,639		8,691		6,959
Taxes on income	1,928		1,848		1,700
Income from continuing operations	5,711		6,843		5,259
Income (loss) from discontinued operations	(205)		(69)		260
Net income	5,506		6,774		5,519
Net income attributable to noncontrolling interests	68		42		29
Net income attributable to Schlumberger	5,438		6,732		5,490
Schlumberger amounts attributable to:
Income from continuing operations	5,643		6,801		5,230
Income (loss) from discontinued operations	(205)		(69)		260
Net income attributable to Schlumberger	$ 5,438		$ 6,732		$ 5,490
Basic earnings per share of Schlumberger:
Income from continuing operations	$ 4.36		$ 5.14		$ 3.93
Income (loss) from discontinued operations	$ (0.16)		$ (0.05)		$ 0.20
Net income	$ 4.20		$ 5.09		$ 4.13
Diluted earnings per share of Schlumberger:
Income from continuing operations	$ 4.31		$ 5.10		$ 3.91
Income (loss) from discontinued operations	$ (0.16)		$ (0.05)		$ 0.19
Net income	$ 4.16	[1]	$ 5.05	[1]	$ 4.10	[1]
Average shares outstanding:
Basic	1,295		1,323		1,330
Assuming dilution	1,308		1,333		1,339

[1] Amounts may not add due to rounding.