Entity Central Index Key Document Document and Entity Information [Abstract] Document Document And Entity Information [Abstract] Document Document And Entity Information [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Document Document And Entity Information [Line Items] Document Document And Entity Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float 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. Profit loss excluding noncontrolling interests associated with discontinued operations. Income Statement [Abstract] Income Statement [Abstract] Statement [Line Items] Statement [Line Items] Revenue Revenues Interest and other income Interest Income And Other Gain on formation of OneSubsea Business Combination Bargain Purchase Gain Recognized Amount Expenses Costs And Expenses [Abstract] Cost of revenue Cost Of Goods And Services Sold Research & engineering Research And Development Expense General & administrative General And Administrative Expense Merger & integration Business Combination Acquisition Related Costs Impairment & other Other Asset Impairment Charges Interest Interest Expense Income from continuing operations before taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Taxes on income Income Tax Expense Benefit Income from continuing operations Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest Income (loss) from discontinued operations Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity Net income Profit Loss Excluding Noncontrolling Interests Associated With Discontinued Operations Net income attributable to noncontrolling interests Net Income Loss Attributable To Noncontrolling Interest Net income attributable to Schlumberger Net Income Loss Schlumberger amounts attributable to: Net Income Loss Attributable To Reporting Entity [Abstract] Income from continuing operations Income Loss From Continuing Operations Net income Basic earnings per share of Schlumberger: Earnings Per Share Basic [Abstract] Income from continuing operations Income Loss From Continuing Operations Per Basic Share Income (loss) from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Basic Share Net income Earnings Per Share Basic Diluted earnings per share of Schlumberger: Earnings Per Share Diluted [Abstract] Income from continuing operations Income Loss From Continuing Operations Per Diluted Share Income (loss) from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Diluted Share Net income Earnings Per Share Diluted Average shares outstanding: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Assuming dilution Weighted Average Number Of Diluted Shares Outstanding Actuarial loss. Prior service cost. Statement Of Income And Comprehensive Income [Abstract] Statement Of Income And Comprehensive Income [Abstract] Net income Currency translation adjustments Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] Unrealized net change arising during the period Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax Marketable securities Marketable Securities [Abstract] Unrealized gain arising during the period Marketable Securities Unrealized Gain Loss Derivatives Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease [Abstract] Net derivatives gain (loss) on hedging transactions Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Reclassification to net income of net realized (gain) loss Other Comprehensive Income Loss Reclassification Adjustment From A O C I On Derivatives Net Of Tax Pension and other postretirement benefit plans Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract] Actuarial gain (loss) Actuarial Loss [Abstract] Actuarial gain (loss) arising during the period Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax Amortization to net income of net actuarial loss Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax Prior service cost Prior Service Cost [Abstract] Prior service gain arising during the period Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax Amortization to net income of net prior service cost Other Comprehensive Income Loss Amortization Adjustment From A O C I Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax Income taxes on pension and other postretirement benefit plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Plan Amendments Tax Effect Comprehensive income Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest Comprehensive income attributable to Schlumberger Comprehensive Income Net Of Tax Capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis, net of amortization. Statement Of Financial Position [Abstract] Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current Assets Assets Current [Abstract] Cash Cash Short-term investments Short Term Investments Receivables less allowance for doubtful accounts (2013 - $384; 2012 - $202) Receivables Net Current Inventories Inventory Net Deferred taxes Deferred Tax Assets Net Current Other current assets Other Assets Current Current assets total Assets Current Fixed Income Investments, held to maturity Held To Maturity Securities Noncurrent Investments in Affiliated Companies Investments In Affiliates Subsidiaries Associates And Joint Ventures Fixed Assets less accumulated depreciation Property Plant And Equipment Net Multiclient Seismic Data Multiclient Seismic Data Goodwill Goodwill Intangible Assets Intangible Assets Net Excluding Goodwill Other Assets Other Assets Noncurrent Total Assets Assets LIABILITIES AND EQUITY Liabilities And Stockholders Equity [Abstract] Current Liabilities Liabilities Current [Abstract] Accounts payable and accrued liabilities Accounts Payable And Accrued Liabilities Current Estimated liability for taxes on income Accrued Income Taxes Current Long-term debt - current portion Long Term Debt Current Short-term borrowings Short Term Borrowings Dividends payable Dividends Payable Current Current Liabilities Total Liabilities Current Long-term Debt Other Long Term Debt Noncurrent Postretirement Benefits Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent Deferred Taxes Deferred Tax Liabilities Noncurrent Other Liabilities Other Liabilities Noncurrent Total Liabilities Liabilities Equity Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] Common stock Common Stock Value Treasury stock Treasury Stock Value Retained earnings Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Schlumberger stockholders’ equity Stockholders Equity Noncontrolling interests Minority Interest Total equity Stockholders Equity Including Portion Attributable To Noncontrolling Interest Liabilities and stockholders equity Liabilities And Stockholders Equity Allowance for doubtful accounts on receivable Allowance For Doubtful Accounts Receivable Current The net cash outflow from capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis. Statement Of Cash Flows [Abstract] Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities [Abstract] Less: (Income) loss from discontinued operations Income Loss From Discontinued Operations Net Of Tax Adjustments to reconcile net income to net cash provided by operating activities: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Depreciation and amortization Depreciation Depletion And Amortization Gain on formation of OneSubsea Earnings of companies carried at equity, less dividends received Income Loss From Equity Method Investments Net Of Dividends Or Distributions Deferred income taxes Deferred Income Tax Expense Benefit Stock-based compensation expense Share Based Compensation Pension and other postretirement benefits expense Increase Decrease In Pension And Postretirement Obligations Impairment of equity investments Equity Method Investment Other Than Temporary Impairment Other non-cash items Other Noncash Expense Pension and other postretirement benefits funding Pension And Other Postretirement Benefit Contributions Change in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Increase in receivables Increase Decrease In Receivables Decrease (increase) in inventories Increase Decrease In Inventories Decrease (increase) in other current assets Increase Decrease In Other Current Assets Increase in other assets Increase Decrease In Other Noncurrent Assets Increase in accounts payable and accrued liabilities Increase Decrease In Accounts Payable And Accrued Liabilities Increase (decrease) in estimated liability for taxes on income Increase Decrease In Accrued Income Taxes Payable Increase in other liabilities Increase Decrease In Other Operating Liabilities Other Increase Decrease In Other Operating Capital Net NET CASH PROVIDED BY OPERATING ACTIVITIES Net Cash Provided By Used In Operating Activities Cash flows from investing activities: Net Cash Provided By Used In Investing Activities [Abstract] Capital expenditures Payments To Acquire Property Plant And Equipment Multiclient seismic data capitalized Payments For Proceeds From Capitalized Costs Support Equipment And Facilities Payment for OneSubsea transaction Payments To Acquire Interest In Joint Venture Other business acquisitions and investments, net of cash acquired Other Payments To Acquire Businesses (Purchase) sale of investments, net Payments For Proceeds From Investments Other Payments For Proceeds From Other Investing Activities NET CASH USED IN INVESTING ACTIVITIES Net Cash Provided By Used In Investing Activities Cash flows from financing activities: Net Cash Provided By Used In Financing Activities [Abstract] Dividends paid Payments Of Dividends Proceeds from employee stock purchase plan Proceeds From Stock Plans Proceeds from exercise of stock options Proceeds From Stock Options Exercised Stock repurchase program Payments For Repurchase Of Equity Proceeds from issuance of long-term debt Proceeds From Issuance Of Long Term Debt Repayment of long-term debt Repayments Of Long Term Debt Net increase (decrease) in short-term borrowings Proceeds From Repayments Of Short Term Debt Other Proceeds From Payments For Other Financing Activities NET CASH USED IN FINANCING ACTIVITIES Net Cash Provided By Used In Financing Activities Cash flow from discontinued operations - operating activities Cash Provided By Used In Operating Activities Discontinued Operations Cash flow from discontinued operations - investing activities Cash Provided By Used In Investing Activities Discontinued Operations Cash flow from discontinued operations Net Cash Provided By Used In Discontinued Operations Net increase (decrease) in cash before translation effect Cash And Cash Equivalents Period Increase Decrease Translation effect on cash Effect Of Exchange Rate On Cash And Cash Equivalents Cash, beginning of year Cash And Cash Equivalents At Carrying Value Cash, end of year Other Comprehensive Income Change In Fair Value Of Derivative And Unrealized Holding Gain Loss On Marketable Securities Arising During Period Net Of Tax Other Accumulated Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease Number of share options exercised during the current period less shares exchanged. Statement Of Stockholders Equity [Abstract] Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Issued Common Stock [Member] Common Stock In Treasury Treasury Stock [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income [Member] Noncontrolling Interests Noncontrolling Interest [Member] Balance Net income Profit Loss Currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Change in unrealized gain on marketable securities 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 fair value of derivatives Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Pension and other postretirement benefit plans Other Accumulated Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease Shares sold to optionees less shares exchanged Stock Issued During Period Value Stock Options Exercised Shares sold to optionees, less shares exchanged, shares Stock Issued During Period Shares Stock Options Exercised Less Shares Exchanged Vesting of restricted stock Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Vesting of restricted stock, shares Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Shares issued under employee stock purchase plan Stock Issued During Period Value Employee Stock Purchase Plan Shares issued under employee stock purchase plan, shares Stock Issued During Period Shares Employee Stock Purchase Plans Stock repurchase program Treasury Stock Value Acquired Cost Method Stock repurchase program, shares Treasury Stock Shares Acquired Stock-based compensation cost Stock Issued During Period Value Share Based Compensation Tax benefit on stock options Sale of CE Franklin Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense Acquisition of noncontrolling interests Minority Interest Period Increase Decrease Sale of CE Franklin Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Dividends declared Dividends Cash Other Stockholders Equity Other Balance Dividends declared, per share Common Stock Dividends Per Share Declared Balance, shares Shares Outstanding Stock repurchase program, shares Balance, shares Text Block [Abstract] Business Description Nature Of Operations Summary of Accounting Policies Significant Accounting Policies [Text Block] Charges and Credits Restructuring And Related Activities Disclosure [Text Block] Acquisitions Business Combination Disclosure [Text Block] Inventories Inventory Disclosure [Text Block] Fixed Assets Property Plant And Equipment Disclosure [Text Block] Disclosure of the carrying amount of multiclient seismic data based on completed and in-process seismic surveys. Multiclient Seismic Data Multiclient Seismic Data [Text Block]