CONSOLIDATED STATEMENT OF INCOME (LOSS) (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Total Revenue	$ 8,303	$ 7,462	$ 16,131	$ 14,356
Interest & other income	40	62	82	108
Expenses
Research & engineering	175	196	347	406
General & administrative	114	110	225	208
Impairments & other	184	510	184	510
Merger & integration		81		164
Interest	144	142	287	281
Income before taxes	547	17	1,190	351
Tax expense	106	98	219	148
Net income (loss)	441	(81)	971	203
Net income (loss) attributable to noncontrolling interests	11	(7)	16	(2)
Net income (loss) attributable to Schlumberger	$ 430	$ (74)	$ 955	$ 205
Basic earnings (loss) per share of Schlumberger	$ 0.31	$ (0.05)	$ 0.69	$ 0.15
Diluted earnings (loss) per share of Schlumberger	$ 0.31	$ (0.05)	$ 0.69	$ 0.15
Average shares outstanding:
Basic	1,384	1,387	1,385	1,390
Assuming dilution	1,392	1,387	1,393	1,397
Services
Revenue
Total Revenue	$ 6,141	$ 5,477	$ 11,876	$ 10,414
Expenses
Cost of services and sales	5,196	4,624	10,076	8,875
Product
Revenue
Total Revenue	2,162	1,985	4,255	3,942
Expenses
Cost of services and sales	$ 1,983	$ 1,844	$ 3,904	$ 3,669