CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$ 10,248us-gaap_Revenues	$ 11,239us-gaap_Revenues
Interest & other income	49slb_InterestIncomeAndOther	76slb_InterestIncomeAndOther
Expenses
Cost of revenue	8,096us-gaap_CostOfGoodsAndServicesSold	8,745us-gaap_CostOfGoodsAndServicesSold
Research & engineering	267us-gaap_ResearchAndDevelopmentExpense	284us-gaap_ResearchAndDevelopmentExpense
General & administrative	119us-gaap_GeneralAndAdministrativeExpense	106us-gaap_GeneralAndAdministrativeExpense
Restructuring & other	439slb_RestructuringAndOtherCharges	0slb_RestructuringAndOtherCharges
Interest	82us-gaap_InterestExpense	103us-gaap_InterestExpense
Income before taxes	1,294	2,077
Taxes on income	306us-gaap_IncomeTaxExpenseBenefit	469us-gaap_IncomeTaxExpenseBenefit
Net income	988us-gaap_ProfitLoss	1,608us-gaap_ProfitLoss
Net income attributable to noncontrolling interests	13	16
Net income attributable to Schlumberger	$ 975us-gaap_NetIncomeLoss	$ 1,592us-gaap_NetIncomeLoss
Basic earnings per share of Schlumberger	$ 0.76us-gaap_EarningsPerShareBasic	$ 1.22us-gaap_EarningsPerShareBasic
Diluted earnings per share of Schlumberger	$ 0.76us-gaap_EarningsPerShareDiluted	$ 1.21us-gaap_EarningsPerShareDiluted
Average shares outstanding:
Basic	1,276	1,306
Assuming dilution	1,285	1,318

Includes operating interest income earned as part of a core business activity, equity income representing the undistributed income or loss of investments which are accounted for under the equity method of accounting, and other miscellaneous income or loss earned from core business activities.

No definition available.