CONSOLIDATED STATEMENT OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenue	$ 6,520	$ 10,248
Interest & other income	45	49
Expenses
Cost of revenue	5,460	8,096
Research & engineering	240	267
General & administrative	110	119
Restructuring & other	0	439
Interest	133	82
Income before taxes	622	1,294
Taxes on income	99	306
Net income	523	988
Net income attributable to noncontrolling interests	22	13
Net income attributable to Schlumberger	$ 501	$ 975
Basic earnings per share of Schlumberger	$ 0.40	$ 0.76
Diluted earnings per share of Schlumberger	$ 0.40	$ 0.76
Average shares outstanding:
Basic	1,254	1,276
Assuming dilution	1,259	1,285