Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable And Accrued Liabilities Current Accounts payable and accrued liabilities Accounts payable and accrued liabilities. Accounts Payable And Accrued Liabilities [Member] Accounts payable and accrued liabilities [Member] Accrued Income Taxes Current Estimated liability for taxes on income Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: Accumulated depreciation Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Ending Balance, Unrealized Gains Marketable Securities Beginning Balance, Unrealized Gains Marketable Securities Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax Ending Balance, Pension and Other Postretirement Benefit Plans Beginning Balance, Pension and Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Derivative Financial Instruments Gain Net Of Tax Accumulated Other Comprehensive Income Loss Derivative Financial Instruments Gain Net Of Tax Ending balance, Fair Value of Derivatives Beginning balance, Fair Value of Derivatives Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax Ending balance, Currency Translation Adjustments Beginning balance, Currency Translation Adjustments Accumulated Other Comprehensive Income Loss Net Of Tax Ending Balance Beginning Balance Accumulated other comprehensive loss Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Loss [Member] Accumulated Other Comprehensive Loss [Line Items] Accumulated Other Comprehensive Loss [Line Items] Accumulated Other Comprehensive Loss [Line Items] Accumulated Other Comprehensive Loss [Table] Accumulated Other Comprehensive Loss [Table] Accumulated Other Comprehensive Loss [Table] Acquisitions And Discontinued Operations [Line Items] Acquisitions And Discontinued Operations [Line Items] Acquisitions And Discontinued Operations [Line Items] Acquisitions And Discontinued Operations [Table] Acquisitions And Discontinued Operations [Table] Acquisitions And Discontinued Operations [Table] Actuarial loss. Actuarial Loss [Abstract] Actuarial loss Allowance For Doubtful Accounts Receivable Current Allowance for doubtful accounts on receivable Amendment Flag Amendment Flag Amortization Of Intangible Assets Amortization expenses Amount of dilutive securities assumed exercise of stock option. Amount Of Dilutive Securities Assumed Exercise Of Stock Option Assumed exercise of stock options Amount of dilutive securities unvested restricted stock. Amount Of Dilutive Securities Unvested Restricted Stock Unvested restricted stock Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Employee stock options to purchase Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Assets Total Assets Assets [Abstract] ASSETS Assets Current Current assets total Assets Current [Abstract] Current Assets Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Cash Cash Cash And Cash Equivalents At Carrying Value Cash, end of period Cash, beginning of period Cash And Cash Equivalents Period Increase Decrease Net increase (decrease) in cash before translation effect Cash Provided By Used In Investing Activities Discontinued Operations Cash flows from discontinued operations-investing activities Cash Provided By Used In Operating Activities Discontinued Operations Cash flows from discontinued operations-operating activities CE Franklin limited. Ce Franklin Limited [Member] CE Franklin Ltd. [Member] Changes in the carrying amount of goodwill. Changes In Carrying Amount Of Goodwill Table [Text Block] Changes in Carrying Amount of Goodwill Charges. Charges After tax merger and integration related charges Charges and credits. Charges And Credits [Member] Charges & credits [Member] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] Contingencies Commodity Contract [Member] Commodity contracts [Member] Common Stock Dividends Per Share Declared Dividends declared, per share Common Stock [Member] Common Stock Issued [Member] Common Stock Value Common stock Compensation And Retirement Disclosure [Abstract] Compensation and Retirement Disclosure [Abstract] Components of deferred income taxes. Components Of Deferred Income Taxes Deferred income taxes Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities [Table] Comprehensive Income Net Of Tax Comprehensive income attributable to Schlumberger Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Comprehensive income Comprehensive Income Note [Text Block] Accumulated Other Comprehensive Loss Corporate And Other [Member] Corporate & other [Member] Cost Of Goods And Services Sold Cost of revenue Cost Of Sales [Member] Cost of revenue [Member] Costs And Expenses [Abstract] Expenses Current Federal Tax Expense Benefit United States-Federal Current Fiscal Year End Date Current Fiscal Year End Date Current Foreign Tax Expense Benefit Outside United States Current Income Tax Expense Benefit Current Income Tax Expense (Benefit), Total Current Income Tax Expense Benefit Continuing Operations [Abstract] Current: Current State And Local Tax Expense Benefit United States-State Customer Relationships [Member] Customer Relationships [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument Carrying Amount Long-term debt, carrying amount Debt Instrument Fair Value Long-term debt, fair value Debt Instrument Interest Rate Stated Percentage Debt instrument interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument Maturity Debt Instrument Maturity Debt instrument maturity date Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Debt [Member] Debt [Member] Debt, other. Debt Other [Member] Other variable rate debt [Member] Deferred Federal Income Tax Expense Benefit United States-Federal Deferred Foreign Income Tax Expense Benefit Outside United States Deferred Income Tax Expense Benefit Deferred income taxes Deferred Income Tax Expense Benefit Continuing Operations [Abstract] Deferred: Deferred State And Local Income Tax Expense Benefit United States-State Deferred Tax Assets Net Net deferred tax assets Deferred Tax Assets Net Current Deferred taxes Deferred Tax Assets Operating Loss Carryforwards Domestic Deferred tax assets, valuation allowances relating to net operating losses in certain countries Deferred Tax Assets Other Other, net Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits Postretirement benefits, net Deferred Tax Liabilities Goodwill And Intangible Assets Intangible assets Deferred Tax Liabilities Noncurrent Deferred Taxes Deferred Tax Liabilities Undistributed Foreign Earnings Investments in non-US subsidiaries Defined Benefit Plan Amortization Of Gains Losses Amortization of net loss Defined Benefit Plan Amortization Of Prior Service Cost Credit Amortization of prior service cost Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Expected Return On Plan Assets Expected return on plan assets Defined Benefit Plan Interest Cost Interest cost on benefit obligation Defined benefit plan, net periodic benefit cost before curtailments. Defined Benefit Plan Net Periodic Benefit Cost Before Curtailments Total pension cost Defined Benefit Plans Disclosures Defined Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plan Service Cost Service cost-benefits earned during period Depreciation Depreciation expense relating to fixed assets Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items] Depreciation And Amortization Expenses For Property Plant And Equipment [Line Items] Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items] Depreciation Depletion And Amortization Depreciation and amortization Derivative Asset Fair Value Net [Abstract] Derivative Assets Derivative By Nature [Axis] Derivative, by Nature [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Derivative Fair Value Of Derivative Asset Derivative Assets Derivative Fair Value Of Derivative Liability Derivative Liabilities Derivative Instrument Risk [Axis] Derivative Instrument Risk [Axis] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments And Hedging Activities Disclosure [Text Block] Derivative Instruments and Hedging Activities Derivative Instruments Gain Loss By Hedging Relationship [Axis] Hedging Relationship [Axis] Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments Gain Loss [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments Gain Loss Reclassified From Accumulated O C I Into Income Effective Portion Net Derivative Assets Gain (Loss) Reclassified from Accumulated OCL into Income Derivative Instruments Gain Loss Recognized In Income Net Gain (Loss) Recognized in Income Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net Gain (Loss) Recognized in OCL Derivative Liability Fair Value Net [Abstract] Derivative Liabilities Derivative [Line Items] Derivative [Line Items] Derivative Name [Domain] Derivative, Name [Domain] Derivatives Designated As Hedging Instruments [Member] Derivatives Designated As Hedging Instruments [Member] Derivatives designated as hedges [Member] Derivatives Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative [Table] Derivative [Table] Designated As Hedging Instrument [Member] Derivatives designated as hedges [Member] Developed Technology Rights [Member] Technology/Technical Know-How [Member] Discontinued Operation Income Loss From Discontinued Operation Before Income Tax Income before taxes Discontinued operation percentage of interest sold. Discontinued Operation Percentage Of Interest Sold Percentage of Schlumberger completed the sale of interest in CE Franklin Ltd. to NOV Discontinued Operations And Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operation Tax Effect Of Discontinued Operation Tax expense Disposal Group Including Discontinued Operation Revenue Revenue Disposal Groups Including Discontinued Operations Disclosure [Text Block] Discontinued Operations Dividends Cash Dividends declared Dividends Payable Current Dividends payable Document Document and Entity Information [Abstract] Document Document And Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Document Type Document Type Domestic Country [Member] Domestic Country [Member] Drilling [Member] Drilling [Member] Drilling [Member] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share Basic Net income Earnings Per Share Basic [Abstract] Basic earnings per share of Schlumberger: Earnings Per Share Basic And Diluted [Abstract] Earnings per Share from Continuing Operations Earnings Per Share Diluted Net income Earnings Per Share Diluted [Abstract] Diluted earnings per share of Schlumberger: Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Earnings Per Share Effective Income Tax Rate Continuing Operations Effective income tax rate The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate shall be the regular tax rate if there are alternative tax systems. Effective Income Tax Rate Reconciliation At Domestic Federal Statutory Income Tax Rate US federal statutory rate US statutory federal rate Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential Non-US income taxed at different rates Effective Income Tax Rate Reconciliation Nondeductible Expense Charges (See Note 2) Effective Income Tax Rate Reconciliation Other Adjustments Other Effective Income Tax Rate Reconciliation State And Local Income Taxes US state income taxes Effect Of Exchange Rate On Cash And Cash Equivalents Translation effect on cash Eliminations [Member] Eliminations [Member] Eliminations & other [Member] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Information [Line Items] Entity Information [Line Items] Entity Listings Exchange [Axis] Entity Listings, Exchange [Axis] Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Exchange [Domain] Exchange [Domain] Fair Value Hedging [Member] Derivatives designated as fair value hedges [Member] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Finite Lived Intangible Assets Accumulated Amortization Accumulated Amortization Finite Lived Intangible Assets Amortization Expense Next Twelve Months Estimated amortization charged to income, 2013 Finite Lived Intangible Assets Amortization Expense Year Five Estimated amortization charged to income, 2017 Finite Lived Intangible Assets Amortization Expense Year Four Estimated amortization charged to income, 2016 Finite Lived Intangible Assets Amortization Expense Year Six Finite Lived Intangible Assets Amortization Expense Year Six Estimated amortization charged to income, 2018 Finite Lived Intangible Assets Amortization Expense Year Three Estimated amortization charged to income, 2015 Finite Lived Intangible Assets Amortization Expense Year Two Estimated amortization charged to income, 2014 Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Asset Useful Life Weighted average amortization period for all intangible assets (years) Fixed rate debt. Fixed Rate Debt Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps Floating rate senior notes due two thousand fourteen. Floating Rate Senior Notes Due Two Thousand Fourteen [Member] Floating Rate Senior Notes due 2014 [Member] Foreign Country [Member] Foreign Country [Member] Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next 12 Months Recognized a cumulative net loss in equity relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges Foreign Currency Exchange Rate Remeasurement 1 Exchange rate Foreign Currency Transaction Gain Loss Realized Currency loss before tax Foreign Currency Translation Gain Loss Realized Net Of Tax Foreign Currency Translation Gain Loss Realized Net Of Tax Currency loss after tax Foreign Exchange Contract [Member] Foreign exchange contracts [Member] Foreign Pension Plans Defined Benefit [Member] International [Member] General And Administrative Expense General & administrative Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Disclosure [Text Block] Goodwill Goodwill [Line Items] Goodwill [Line Items] Goodwill Translation And Purchase Accounting Adjustments Impact of changes in exchange rates and other Guaranteed notes four point five zero percent due two thousand fourteen. Guaranteed Notes Four Point Five Zero Percent Due Two Thousand Fourteen [Member] 4.50% Guaranteed Notes due 2014 [Member] Guaranteed notes two point seven five percent due two thousand fifteen. Guaranteed Notes Two Point Seven Five Percent Due Two Thousand Fifteen [Member] 2.75% Guaranteed Notes due 2015 [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Hedging Relationship [Domain] Hedging Relationship [Domain] Held To Maturity Securities Noncurrent Fixed Income Investments, held to maturity Income Loss From Continuing Operations Basic Income from continuing operations Income Loss From Continuing Operations Before Income And Minority Interest Income Loss From Continuing Operations Before Income And Minority Interest Income (Loss) from Continuing Operations before Income Taxes and Minority Interest, Total The portion of earnings (loss) from continuing operations before income taxes that is attributable to domestic country operations. Income Loss From Continuing Operations Before Income Taxes Domestic Country United States Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before taxes The portion of earnings (loss) from continuing operations before income taxes that is attributable to foreign operations, which is defined as income (loss) generated from operations located outside the foreign country. Income Loss From Continuing Operations Before Income Taxes Foreign Country Outside United States Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income before taxes Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest Income from continuing operations Income Loss From Continuing Operations Per Basic Share Basic Income from continuing operations Income Loss From Continuing Operations Per Diluted Share Diluted Income from continuing operations Income Loss From Discontinued Operations Net Of Tax Income from discontinued operations Less: Income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest Net income attributable to noncontrolling interests Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity Income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Basic Share Income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Diluted Share Income from discontinued operations Income Loss From Equity Method Investments Net Of Dividends Or Distributions Earnings of companies carried at equity, less dividends received Income Statement [Abstract] Income Statement [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Tax Income Tax Examination [Line Items] Income Tax Examination [Line Items] Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Expense Benefit Taxes on income Consolidated taxes on income Increase Decrease In Accounts Payable And Accrued Liabilities Decrease in accounts payable and accrued liabilities Increase Decrease In Accrued Income Taxes Payable Increase in liability for taxes on income Increase Decrease In Inventories Increase in inventories Increase Decrease In Operating Capital [Abstract] Change in assets and liabilities: Increase Decrease In Other Current Assets Increase in other current assets Increase Decrease In Other Operating Capital Net Other Increase Decrease In Other Operating Liabilities Decrease in other liabilities Increase Decrease In Pension And Postretirement Obligations Pension and other postretirement benefits expense Increase Decrease In Receivables Increase in receivables Incremental Common Shares Attributable To Call Options And Warrants Assumed exercise of stock options Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends Unvested restricted stock Intangible Assets By Major Class [Line Items] Intangible Assets By Major Class [Line Items] Intangible Assets By Major Class [Line Items] Intangible Assets Disclosure [Text Block] Intangible Assets Intangible assets, gross (excluding goodwill). Intangible Assets Gross Excluding Goodwill Gross Book Value Intangible Assets [Line Items] Intangible Assets [Line Items] Intangible Assets [Line Items] Intangible Assets Net Excluding Goodwill Intangible Assets Net Book Value Interest Expense Interest Interest expense included in the segment results Interest Expense Excluded From Segment Information [Member] Interest Expense Excluded From Segment Information [Member] Interest Expense Excluded From Segment Information [Member] Interest Expense [Member] Interest expense [Member] 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. Interest Income And Other Interest & other income Interest Income [Member] Interest income [Member] Interest Rate Contract [Member] Interest rate swaps [Member] Inventories [Line Items] Inventories [Line Items] Inventories [Line Items] Inventories [Table] Inventories [Table] Inventories [Table] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] Inventories Inventory Finished Goods Finished goods Inventory Net Inventories Inventories Inventory Raw Materials And Supplies Raw materials & field materials Inventory Work In Process Work in process Investments In Affiliates Subsidiaries Associates And Joint Ventures Investments in Affiliated Companies Legal Entity [Axis] Legal Entity [Axis] Liabilities Total Liabilities Liabilities And Stockholders Equity Liabilities and stockholders equity Liabilities And Stockholders Equity [Abstract] LIABILITIES AND EQUITY Liabilities Current Current Liabilities Total Liabilities Current [Abstract] Current Liabilities Long Term Debt Current Long-term debt - current portion Long Term Debt [Text Block] Long-term Debt Longterm Debt Type [Axis] Long-term Debt, Type [Axis] Longterm Debt Type [Domain] Long-term Debt, Type [Domain] Marketable Securities [Abstract] Marketable securities Marketable Securities Current Short-term investments and Fixed income investments, held to maturity Marketable Securities Unrealized Gain Loss Unrealized gain arising during the period Merger And Acquisition Costs Merger & integration Merger related transaction costs. Merger Related Transaction Costs [Member] Merger-related transaction costs [Member] Minority Interest Noncontrolling interests Capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis, net of amortization. Multiclient Seismic Data Ending Balance Opening Balance Multiclient Seismic Data Multiclient seismic data, capitalized in period. Multiclient Seismic Data Capitalized In Period Capitalized in period Multiclient seismic data, charged to cost of goods sold and services. Multiclient Seismic Data Charged To Cost Of Goods Sold And Services Charged to expense Disclosure of the carrying amount of multiclient seismic data based on completed and in-process seismic surveys. Multiclient Seismic Data Table [Text Block] Multiclient Seismic Data Table Disclosure of the carrying amount of multiclient seismic data based on completed and in-process seismic surveys. Multiclient Seismic Data [Text Block] Multiclient Seismic Data Net Cash Provided By Used In Discontinued Operations Cash flows from discontinued operations Net Cash Provided By Used In Financing Activities NET CASH USED IN FINANCING ACTIVITIES Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided By Used In Investing Activities NET CASH USED IN INVESTING ACTIVITIES Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided By Used In Operating Activities NET CASH PROVIDED BY OPERATING ACTIVITIES Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net income to cash provided by operating activities: Net Income Loss Net income attributable to Schlumberger Net Income Loss Attributable To Noncontrolling Interest Net income attributable to noncontrolling interests Net Income Loss Attributable To Reporting Entity [Abstract] Schlumberger amounts attributable to: Schlumberger Income from Continuing Operations Net Income Loss Available To Common Stockholders Diluted Diluted Noncontrolling Interest [Member] Noncontrolling Interests [Member] Nondesignated [Member] Derivatives not designated as hedges [Member] Notional Amount Of Foreign Currency Derivatives Contracts outstanding in various foreign currencies (US dollar equivalent) Number of countries in which company conducts business. Number Of Countries In Which Company Conducts Business Number of countries in which Schlumberger conducts business Oilfield services. Oilfield Services [Member] Oilfield Services [Member] One point nine five percent senior notes due two thousand sixteen. One Point Nine Five Percent Senior Notes Due Two Thousand Sixteen [Member] 1.95% Senior Notes due 2016 [Member] Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Basis of Presentation Other Accumulated Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease Other Accumulated Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease Pension and other postretirement benefit plans Other Assets Current Other current assets Other Assets [Member] Other [Member] Other Assets Noncurrent Other Assets Other Comprehensive Income Change In Fair Value Of Derivative And Unrealized Holding Gain Loss On Marketable Securities Arising During Period Net Of Tax Other Comprehensive Income Change In Fair Value Of Derivative And Unrealized Holding Gain Loss On Marketable Securities Arising During Period Net Of Tax Changes in unrealized gain on marketable securities Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract] Pension and other postretirement benefit plans Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease [Abstract] Derivatives Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] Currency translation adjustments Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax Unrealized net change arising during the period Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax Other comprehensive income (loss) before reclassifications, Currency Translation Adjustments Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax Amortization to net income of net prior service cost (see Note 14) Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax Other comprehensive income (loss) before reclassifications, Unrealized Gains Marketable Securities Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax Amounts reclassified from accumulated other comprehensive loss, Unrealized Gains Marketable Securities Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Net other comprehensive income (loss), Unrealized Gains Marketable Securities Other Comprehensive Income Loss Available For Sale Securities Tax Income taxes, Unrealized Gains Marketable Securities Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Changes in fair value of derivatives Net other comprehensive income (loss), Fair Value of Derivatives Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Income taxes, Fair Value of Derivatives Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Currency translation adjustments Net other comprehensive income (loss), Currency Translation Adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Before Tax Amounts reclassified from accumulated other comprehensive loss, Currency Translation Adjustments Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax Income taxes, Currency Translation Adjustments Other Comprehensive Income Loss Net Of Tax Net other comprehensive income (loss) Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax Other comprehensive income (loss) before reclassifications, Pension and Other Postretirement Benefit Plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax Amounts reclassified from accumulated other comprehensive loss, Pension and Other Postretirement Benefit Plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax Net other comprehensive income (loss), Pension and Other Postretirement Benefit Plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax Actuarial loss arising during the period Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Plan Amendments Tax Effect Income taxes on pension and other postretirement benefit plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax Income taxes, Pension and Other Postretirement Benefit Plans Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Before Tax Amounts reclassified from accumulated other comprehensive loss, Fair Value of Derivatives Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax Reclassification to net income of net realized loss (gain) (see Note 10) Other Comprehensive Income Loss Tax Income taxes Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax Amortization to net income of net actuarial loss ( see Note 14 ) Other Comprehensive Income Unrealized Arising During Period Before Reclassifications And Tax Others Other Comprehensive Income Unrealized Arising During Period Before Reclassifications And Tax Others Other comprehensive income (loss) before reclassifications Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax Other comprehensive income (loss) before reclassifications, Fair Value of Derivatives Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Net derivatives (loss) gain on hedge transactions Other Current Assets [Member] Other current assets [Member] Other Intangible Assets [Member] Other [Member] Other Liabilities [Member] Other Liabilities [Member] Other Liabilities Noncurrent Other Liabilities Other Long Term Debt Noncurrent Long-term Debt Other Payments To Acquire Businesses Business acquisitions, net of cash acquired Other Restructuring [Member] Other Restructuring [Member] Outstanding Stock Awards [Member] Outstanding Stock Awards [Member] The net cash outflow from capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis. Payments For Proceeds From Capitalized Costs Support Equipment And Facilities Multiclient seismic data capitalized Payments For Proceeds From Investments Sale of investments, net Payments For Proceeds From Other Investing Activities Other Payments For Repurchase Of Equity Stock repurchase program Payments Of Dividends Dividends paid Payments To Acquire Property Plant And Equipment Capital expenditures Pension And Other Postretirement Benefit Contributions Pension and other postretirement benefits funding Pension And Other Postretirement Benefits Disclosure [Text Block] Pension and Other Postretirement Benefits Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent Postretirement Benefits Postretirement Medical Plan [Member] Postretirement Medical Plan [Member] Postretirement medical plan [Member] Price Risk Derivative Instruments Not Designated As Hedging Instruments At Fair Value Net Commodity forward contract outstanding Prior service cost. Prior Service Cost [Abstract] Prior service cost Proceed from divestiture of businesses. Proceed From Divestiture Of Businesses Proceed from sale of business Proceeds From Issuance Of Long Term Debt Proceeds from issuance of long-term debt Proceeds From Repayments Of Short Term Debt Net increase in short-term borrowings Proceeds From Stock Options Exercised Proceeds from exercise of stock options Proceeds From Stock Plans Proceeds from employee stock purchase plan Production [Member] Production [Member] Production [Member] Profit Loss Net income Profit loss excluding noncontrolling interests associated with discontinued operations. Profit Loss Excluding Noncontrolling Interests Associated With Discontinued Operations Net income Net income Proforma Debt Instrument [Line Items] Proforma Debt Instrument [Line Items] Proforma Debt Instrument [Line Items] Property Plant And Equipment [Abstract] Property, Plant and Equipment [Abstract] Property Plant And Equipment Disclosure [Text Block] Fixed Assets Property Plant And Equipment Gross Property, plant & equipment Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Property Plant And Equipment Net Fixed Assets less accumulated depreciation Fixed assets less accumulated depreciation Property Plant And Equipment [Text Block] Property, Plant and Equipment Property Plant and Equipment Useful Life And Values [Abstract] Property Plant And Equipment Useful Life And Values [Abstract] Property Plant and Equipment Useful Life And Values [Abstract] Receivables Net Current Receivables less allowance for doubtful accounts (2013 - $207; 2012 - $202) Reclassification From Accumulated Other Comprehensive Income Reclassification From Accumulated Other Comprehensive Income Amounts reclassified from accumulated other comprehensive loss Regulated Operations [Abstract] Regulated Operations [Abstract] Repayments Of Long Term Debt Repayment of long-term debt Research And Development Expense Research & engineering Research And Development Expense [Member] Research & engineering [Member] Reservoir Characterization [Member] Reservoir Characterization [Member] Reservoir Characterization [Member] Reservoir production. Reservoir Production [Member] Production [Member] Restructuring And Related Activities [Abstract] Restructuring and Related Activities [Abstract] Restructuring And Related Activities Disclosure [Text Block] Charges and Credits Restructuring Charges Restructuring & other Restructuring charges pretax. Restructuring Charges Pretax Charges pretax Pretax merger and integration related charges Restructuring Cost And Reserve [Axis] Restructuring Type [Axis] Restructuring Cost And Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Retained Earnings Accumulated Deficit Retained earnings Retained Earnings [Member] Retained Earnings [Member] Revenues Revenue Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] Accumulated Other Comprehensive Loss Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] Components of Consolidated Income Taxes Schedule Of Debt Instruments [Text Block] Long-term Debt Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] Components of Net Deferred Tax Assets Schedule Of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Schedule Of Derivative Instruments Effect On Other Comprehensive Income Loss Table [Text Block] Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL) Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block] Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block] Fair Values of Outstanding Derivative Instruments Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block] Discontinued Operations Schedule Of Earnings Per Share Reconciliation Table [Text Block] Reconciliation of Earnings Per Share Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] Reconciliation of US Statutory Federal Tax Rate Schedule Of Finite Lived Intangible Assets Table [Text Block] Schedule of Intangible Assets by Major Class Schedule Of Goodwill [Table] Schedule of Goodwill [Table] Schedule Of Income Before Income Tax Domestic And Foreign Table [Text Block] Income Tax Disclosure Table Schedule Of Income Taxes [Line Items] Schedule Of Income Taxes [Line Items] Schedule Of Income Taxes [Line Items] Schedule Of Income Taxes [Table] Schedule Of Income Taxes [Table] Schedule Of Income Taxes [Table] Schedule Of Intangible Assets By Major Class [Table] Schedule Of Intangible Assets By Major Class [Table] Schedule Of Intangible Assets By Major Class [Table] Schedule Of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Schedule Of Inventory Current Table [Text Block] Inventory Disclosure Schedule Of Net Benefit Costs Table [Text Block] Net Pension Cost for Schlumberger Pension Plans and US Postretirement Medical Plan Schedule Of Property Plant And Equipment [Table] Schedule of Property, Plant and Equipment [Table] Schedule Of Restructuring And Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule Of Segment Reporting Information By Segment [Text Block] Schedule of Segment Reporting Information, by Segment Segment [Domain] Segment [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Information Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment Reporting Information Revenue Revenue Senior notes four point two zero zero percent due two thousand twenty one. Senior Notes Four Point Two Zero Zero Percent Due Two Thousand Twenty One [Member] 4.20% Senior Notes due 2021 [Member] Senior Notes One Point Two Five Percent Due Two Thousand And Seventeen [Member] Senior Notes One Point Two Five Percent Due Two Thousand And Seventeen [Member] 1.25% Senior Notes due 2017 [Member] Senior Notes Two Point Four Zero Percent Due Two Thousand And Twenty Two [Member] Senior Notes Two Point Four Zero Percent Due Two Thousand And Twenty Two [Member] 2.40% Senior Notes due 2022 [Member] Senior notes two point sixty five zero percent due two thousand sixteen. Senior Notes Two Point Sixty Five Zero Percent Due Two Thousand Sixteen [Member] 2.65% Senior Notes due 2016 [Member] Share Based Compensation Stock-based compensation expense Shares Outstanding Balance, shares Balance, shares Short Term Borrowings Short-term borrowings Short Term Investments Short-term investments Statement Business Segments [Axis] Business Segments [Axis] Statement Equity Components [Axis] Equity Components [Axis] Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement Of Income And Comprehensive Income [Abstract] Statement of Other Comprehensive Income [Abstract] Statement Of Stockholders Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Stockholders Equity Schlumberger stockholders' equity Stockholders Equity Including Portion Attributable To Noncontrolling Interest Balance, Balance, Total equity Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] Equity Stockholders Equity Other Other Stock Issued During Period Shares Employee Stock Purchase Plans Shares issued under employee stock purchase plan Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Vesting of restricted stock Stock Issued During Period Shares Stock Options Exercised Shares sold to optionees, less shares exchanged Stock Issued During Period Value Employee Stock Purchase Plan Shares issued under employee stock purchase plan Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Vesting of restricted stock Stock Issued During Period Value Share Based Compensation Stock-based compensation expense Stock Issued During Period Value Stock Options Exercised Shares sold to optionees, less shares exchanged Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event [Table] Subsequent Event [Table] Text Block [Abstract] Text Block [Abstract] Three point three zero percent senior notes due two thousand twenty one. Three Point Three Zero Percent Senior Notes Due Two Thousand Twenty One [Member] 3.30% Senior Notes due 2021 [Member] Trade Names [Member] Tradenames [Member] Trading Symbol Trading Symbol Treasury Stock [Member] Common Stock In Treasury [Member] Treasury Stock Shares Acquired Stock repurchase program Treasury Stock Value Treasury stock Treasury Stock Value Acquired Cost Method Stock repurchase program Type Of Restructuring [Domain] Type of Restructuring [Domain] United States Pension Plans Of U S Entity Defined Benefit [Member] US Plan Assets [Member] Variable rate debt. Variable Rate Debt Variable rate debt aggregate, after taking into account the effects of the interest rate swaps Venezuela Bolivar Official Currency Exchange Rate To Dollar [Member] Venezuela Bolivar Official Currency Exchange Rate To Dollar [Member] Venezuela Bolivar Official Currency Exchange Rate to Dollar [Member] Weighted Average Number Of Diluted Shares Outstanding Assuming dilution Diluted Weighted Average Number Of Shares Outstanding [Abstract] Average Shares Outstanding Average shares outstanding: Weighted Average Number Of Shares Outstanding Basic Basic Wilson distribution business. Wilson Distribution Business [Member] Wilson Distribution Segment [Member]