Entity Central Index Key Charges and credits pretax. Charges and credits tax. Charges and credits impact of non controlling interest. 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. Equity method investment other than temporary impairment and foreign currency devaluation loss. Cover [Abstract] 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 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 Interactive Data Current Entity Interactive Data Current Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company ICFR Auditor Attestation Flag Icfr Auditor Attestation Flag Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float Title of 12(b) Security Security12b Title Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity File Number Entity File Number Entity Incorporation, State or Country Code Entity Incorporation State Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, Address Line Two Entity Address Address Line2 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Country Entity Address Country Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Document Annual Report Document Annual Report Document Transition Report Document Transition Report Documents Incorporated by Reference Documents Incorporated By Reference [Text Block] Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Services Service [Member] Product Product [Member] Statement [Line Items] Statement [Line Items] Revenue Revenues [Abstract] Total Revenue Revenue From Contract With Customer Excluding Assessed Tax Interest & other income Interest Income And Other Gains on sales of businesses Gain Loss On Sale Of Business Expenses Costs And Expenses [Abstract] Cost of services and sales Cost Of Goods And Services Sold Research & engineering Research And Development Expense General & administrative General And Administrative Expense Impairments & other Equity Method Investment Other Than Temporary Impairment And Foreign Currency Devaluation Loss Interest Interest Expense Income (loss) before taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Tax expense (benefit) Income Tax Expense Benefit Net income (loss) Profit Loss Net income attributable to noncontrolling interests Net Income Loss Attributable To Noncontrolling Interest Net income (loss) attributable to Schlumberger Net Income Loss Basic earnings (loss) per share of Schlumberger Earnings Per Share Basic Diluted earnings (loss) per share of Schlumberger 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 Statement Of Income And Comprehensive Income [Abstract] Net income (loss) Currency translation adjustments Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] Net change arising during the period Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent Marketable securities Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease [Abstract] Unrealized loss arising during the period Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Cash flow hedges Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease [Abstract] Net loss on cash flow hedges Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Reclassification to net income (loss) of net realized 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) 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 (loss) 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 Amortization to net income (loss) of net prior service (credit) 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 Impact of curtailment Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 Income taxes on pension and other postretirement benefit plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax Comprehensive income (loss) 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 (loss) 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. Short term borrowings and long term debt current. 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 (2020 - $301; 2019 - $255) Receivables Net Current Inventories Inventory Net Other current assets Other Assets Current Current assets total Assets Current 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 Finite Lived Intangible Assets Net 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 Short-term borrowings and current portion of long-term debt Short Term Borrowings And Long Term Debt Current Dividends payable Dividends Payable Current Current Liabilities Total Liabilities Current Long-term Debt Long Term Debt Noncurrent Postretirement Benefits Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent Deferred Taxes Deferred Income Tax Liabilities Net 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. Proceeds from formation of Sensia joint venture. Payments for proceeds from investments Statement Of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income (loss) to cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Impairments and other charges and credits Other Asset Impairment Charges Depreciation and amortization Depreciation Depletion And Amortization Deferred taxes Deferred Income Tax Expense Benefit Stock-based compensation expense Share Based Compensation Pension and other postretirement benefits funding Pension And Other Postretirement Benefit Contributions Earnings of equity method investments, less dividends received Income Loss From Equity Method Investments Net Of Dividends Or Distributions Change in assets and liabilities: Increase Decrease In Operating Capital [Abstract] Decrease 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) decrease in other assets Increase Decrease In Other Noncurrent Assets Decrease in accounts payable and accrued liabilities Increase Decrease In Accounts Payable And Accrued Liabilities (Decrease) increase in estimated liability for taxes on income Increase Decrease In Accrued Income Taxes Payable Increase (decrease) 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 APS investments Payments To Acquire Investments Multiclient seismic data capitalized Payments For Proceeds From Capitalized Costs Support Equipment And Facilities Net proceeds from divestitures Proceeds From Divestiture Of Businesses Proceeds from formation of Sensia joint venture Proceeds From Formation Of Sensia Joint Venture Proceeds from sale of WesternGeco marine seismic business, net of cash divested Proceeds From Divestiture Of Businesses Net Of Cash Divested Business acquisitions and investments, net of cash acquired Payments To Acquire Businesses And Interest In Affiliates (Purchase) sale of investments, net Payments For Proceeds From Investments1 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 Repayment of finance lease-related obligations Repayments Of Debt And Capital Lease Obligations Other Proceeds From Payments For Other Financing Activities NET CASH USED IN FINANCING ACTIVITIES Net Cash Provided By Used In Financing Activities Net decrease in cash before translation effect Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Translation effect on cash Effect Of Exchange Rate On Cash Cash, beginning of period Cash, end of period Tax cuts and jobs act of 2017 reclassification adjustment from aoci to retained earnings tax effect. Number of share options exercised during the current period less shares exchanged. 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 Balance, shares Shares Outstanding Treasury shares, Balance Treasury Stock Shares Currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Changes in unrealized gain on marketable securities Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Changes in fair value of cash flow hedges Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Pension and other postretirement benefit plans Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax 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 expense Stock Issued During Period Value Share Based Compensation Dividends declared Dividends Cash Stranded tax related to US pension Tax Cuts And Jobs Act Of2017 Reclassification Adjustment From Aoci To Retained Earnings Tax Effect Other Stockholders Equity Other Balance Balance, shares Treasury shares, Balance Dividends declared, per share Common Stock Dividends Per Share Declared Organization Consolidation And Presentation Of Financial Statements [Abstract] Business Description Nature Of Operations Accounting Policies [Abstract] Summary of Accounting Policies Significant Accounting Policies [Text Block] Restructuring And Related Activities [Abstract] Charges and Credits Restructuring And Related Activities Disclosure [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Property Plant And Equipment [Abstract] 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 [Abstract] Multiclient Seismic Data Multiclient Seismic Data [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill Goodwill Disclosure [Text Block] Intangible Assets Intangible Assets Disclosure [Text Block] Debt Disclosure [Abstract] Long-term Debt and Debt Facility Agreements Long Term Debt [Text Block] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Derivative Instruments And Hedging Activities Disclosure [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock-based Compensation Plans Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Leases [Abstract] Leases and Lease Commitments Commitments Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Contingencies Loss Contingency Disclosures Segment Reporting [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Compensation And Retirement Disclosure [Abstract] Pension and Other Benefit Plans Pension And Other Postretirement Benefits Disclosure [Text Block] Supplementary Information Additional Financial Information Disclosure [Text Block] Use of Estimates Use Of Estimates Revenue Recognition Revenue Recognition Policy [Text Block] Short-term and Investments Investment Policy [Text Block] Investments in Affiliated Companies Equity And Cost Method Investments Policy Multiclient seismic data. Multiclient Seismic Data Multiclient Seismic Data Policy [Text Block] Asset performance solutions. Asset Performance Solutions Asset Performance Solutions Policy [Text Block] Concentration of Credit Risk Concentration Risk Credit Risk Earnings per Share Earnings Per Share Policy [Text Block] Reclassifications Prior Period Reclassification Adjustment Description Reconciliation of Earnings Per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Summary of charges and credits. Summary of Charges and Credits Summary Of Charges And Credits Table [Text Block] Summary of Inventory Schedule Of Inventory Current Table [Text Block] Summary of Fixed Assets Property Plant And Equipment [Text Block] Disclosure of the carrying amount of multiclient seismic data based on completed and in-process seismic surveys. Change in Carrying Amount of Multiclient Seismic Data Multiclient Seismic Data Table [Text Block] Changes in Carrying Amount of Goodwill Schedule Of Goodwill [Text Block] Schedule of Intangible Assets by Major Class Schedule Of Finite Lived Intangible Assets Table [Text Block] Summary of Long-term Debt Schedule Of Debt Instruments [Text Block] Effect of Derivative Instruments Designated as Fair Value Hedges and Not Designated as Hedges on Consolidated Statement of Income (Loss) Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block] Schedule of Accumulated Other Comprehensive Loss Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] Weighted Average Assumptions Used in Estimating Fair Value of Stock Options Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Options Outstanding and Option Exercisable Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Text Block] Summary of Stock Option Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Restricted Stock Transactions Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Assumptions Used in Estimating Fair Value of Purchase Rights under Discounted Stock Purchase Plan Schedule Of Share Based Payment Award Employee Stock Purchase Plan Valuation Assumptions Table [Text Block] Stock-Based Compensation Expense Recognized in Income Schedule Of Compensation Cost For Share Based Payment Arrangements Allocation Of Share Based Compensation Costs By Plan Table [Text Block] Income (Loss) Before Taxes Schedule Of Income Before Income Tax Domestic And Foreign Table [Text Block] Components of Net Deferred Tax Assets (Liabilities) Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] Components of Tax Expense (Benefit) Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] Reconciliation of US Statutory Federal Tax Rate Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] Reconciliation of Liabilities Associated with Uncertain Tax Provisions Summary Of Income Tax Contingencies [Text Block] Tax Years Subject to Examination by Tax Authorities Summary Of Income Tax Examinations [Text Block] Maturities of Operating Lease Liabilities Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of Segment Reporting Information, by Segment Schedule Of Segment Reporting Information By Segment [Text Block] Revenue by Geographic Area Reconciliation Of Revenue From Segments To Consolidated [Text Block] Summary of geographical segment revenue disaggregated by segment. Summary of North America and International Revenue Disaggregated by Segment Summary Of Geographical Segment Revenue Disaggregated By Segment Table [Text Block] Fixed Assets Less Accumulated Depreciation by Geographic Area Reconciliation Of Assets From Segment To Consolidated [Text Block] Weighted-Average Assumed Discount Rate, Compensation Increases and Expected Long-Term Rate of Return on Plan Assets Used to Determine Net Pension Cost for US and International Plans Schedule Of Assumptions Used Table [Text Block] Net Pension Cost (Credit) for Schlumberger Pension Plans and US Postretirement Medical Plan Schedule Of Net Benefit Costs Table [Text Block] Defined benefit plan weighted average assumptions used in calculating benefit obligation. Weighted-Average Assumed Discount Rate and Compensation Increases Used to Determine Projected Benefit Obligations for US and International Plans Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation Table [Text Block] Changes in projected benefit obligation plan assets and funded status of plans. Changes In Projected Benefit Obligation Plan Assets And Funded Status Of Plans Changes In Projected Benefit Obligation Plan Assets And Funded Status Of Plans Table [Text Block] Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category Schedule Of Allocation Of Plan Assets Table [Text Block] Fair value of pension plan assets. Fair Value of Schlumberger's Pension Plan Assets Fair Value Of Pension Plan Assets Table [Text Block] Defined benefit plan weighted average assumptions used in calculating benefit obligation and net periodic benefit cost for postretirement medical plan. Defined Benefit Plan Weighted Average Assumptions Used in Calculating Benefit Obligation and Net Periodic Benefit Cost for US Postretirement Medical Plan Defined Benefit Plan Weighted Average Assumptions Used In Calculating Benefit Obligation And Net Periodic Benefit Cost For Postretirement Medical Plan Table [Text Block] Changes in accumulated postretirement benefit obligation plan assets and funded status. Changes in Accumulated Postretirement Benefit Obligation, Plan Assets and Funded Status Changes In Accumulated Postretirement Benefit Obligation Plan Assets And Funded Status Table [Text Block] Expected Benefits to be Paid Under US and International Pension Plans and Postretirement Medical Plan Schedule Of Expected Benefit Payments Table [Text Block] Cash paid (refunded) for interest and income taxes. Cash Paid (Refunded) for Interest and Income Taxes Cash Paid Refunded For Interest And Income Taxes Table [Text Block] Interest and Other Income Interest And Other Income Table [Text Block] Allowance for doubtful accounts. Change in Allowance for Doubtful Accounts Allowance For Doubtful Accounts Table [Text Block] Accounts Payable and Accrued Liabilities Schedule Of Accounts Payable And Accrued Liabilities Table [Text Block] Revenue recognition, period of recognition. Organization and summary of significant accounting policies. Organization and summary of significant accounting policies. Organization And Summary Of Significant Accounting Policies [Table] Organization And Summary Of Significant Accounting Policies [Table] Project Capitalized Costs Of Unproved Properties Excluded From Amortization By Property Or Project [Axis] Project Project [Member] Schlumberger production management. Schlumberger Production Management Schlumberger Production Management [Member] Concentration Risk Benchmark Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Revenue Sales Revenue Net [Member] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum Minimum [Member] Maximum Maximum [Member] Asset Performance Solutions. Asset Performance Solutions Asset Performance Solutions [Member] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] Mexico MEXICO Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Organization And Summary Of Significant Accounting Policies [Line Items] Organization And Summary Of Significant Accounting Policies [Line Items] Revenue recognition period Revenue Recognition Period Of Recognition Percentage of deferred revenue expected to be recognized within one year. Total backlog Deferred Revenue Percentage of revenue expected to be recognized over next 12 months Percentage Of Deferred Revenue Expected To Be Recognized Within One Year Amortization expenses of capitalized investments. Unamortized investments. Amortization expenses of capitalized investments Amortization Expenses Of Capitalized Investments Unamortized investments Unamortized Investments Number of countries in which Schlumberger conducts business Number Of Countries In Which Entity Operates Number of reportable segments accounted for greater than 10% of accounts receivable Number Of Reportable Segments Concentration risk, percentage Concentration Risk Percentage1 Earnings Per Share [Abstract] Net Income (Loss) Attributable to Schlumberger Net Income Loss [Abstract] Basic Net Income Loss Available To Common Stockholders Basic Diluted Net Income Loss Available To Common Stockholders Diluted Average Shares Outstanding Assumed exercise of stock options Incremental Common Shares Attributable To Call Options And Warrants Unvested restricted stock Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends Diluted Earnings (Loss) per Share Earnings Per Share Reconciliation [Abstract] Basic Diluted Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Award Type Award Type [Axis] Award Type Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Employee Stock Options Employee Stock Option [Member] Unvested Restricted Stock Restricted Stock Units R S U [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Charges and credits. Charges and credits. Charges and credits. Charges And Credits [Table] Charges And Credits [Table] Restructuring Type Restructuring Cost And Reserve [Axis] Type of Restructuring Type Of Restructuring [Domain] Goodwill Goodwill [Member] Intangible Assets Impairment. Intangible assets impairment Intangible Assets Impairment [Member] Asset Performance Solutions Investments Asset Performance Solutions Investment [Member] Multiclient seismic data impairment. Multiclient seismic data impairment Multiclient Seismic Data Impairment [Member] North America pressure pumping asset impairments. North America pressure pumping asset impairments North America Pressure Pumping Asset Impairments [Member] Workforce reductions Employee Severance [Member] Other assets impairment. Other Other Assets Impairment [Member] Valuation allowance Valuation Allowance [Member] Fixed asset impairment. Fixed Asset Impairment Fixed Asset Impairment [Member] Inventory write down. Inventory Write Down Inventory Write Down [Member] Right Of Use Asset Impairments Right Of Use Asset Impairments [Member] Costs Associated With Exiting Certain Activities1 Costs Associated With Exiting Certain Activities1 [Member] Repurchase of bonds. Repurchase of bonds Repurchase Of Bonds [Member] Postretirement Benefits Curtailment Gain Postretirement Benefits Curtailment Gain [Member] Facility exit charges Facility Closing [Member] Gain on sale of OneStim. Gain on sale of OneStim Gain On Sale Of One Stim [Member] Unrealized gain on available for sale marketable securities member. Unrealized Gain On Available For Sale Marketable Securities Unrealized Gain On Available For Sale Marketable Securities [Member] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Impairment and other. Impairment and Other Impairment And Other [Member] North America restructuring. North America restructuring North America Restructuring [Member] Other restructuring Other Restructuring [Member] Other North America-related [Member] Other North America - Related Other North America Related [Member] Argentina ARKANSAS Pension Settlement Accounting. Pension settlement accounting Pension Settlement Accounting [Member] Equity Method Investment, Other Than Temporary Impairment Equity Method Investments [Member] Gain on formation of Sensia joint venture. Gain on formation of Sensia joint venture Gain On Formation Of Sensia Joint Venture [Member] Goodwill Impairment. Goodwill impairment Goodwill Impairment [Member] Marine seismic acquisition business. Gain on sale of marine seismic acquisition business Marine Seismic Acquisition Business [Member] Asset impairments. Asset Impairment Charges Asset Impairments [Member] Charges And Credits [Line Items] Charges And Credits [Line Items] Charges and credits, Pretax Charges And Credits Pretax Charges and credits, Tax Charges And Credits Tax Charges and credits, Net Charges And Credits Reporting Unit Reporting Unit [Axis] Reporting Unit Reporting Unit [Domain] Seven Reporting Units. Seven Reporting Units Seven Reporting Units [Member] Four reporting units. Ten Reporting Units Four Reporting Units [Member] Six reporting units. Six Reporting Units Six Reporting Units [Member] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Cameron. Cameron Cameron [Member] Smith International Inc Smith and Geoservices. Smith International Inc Smith Aand Geoservices Smith International Inc Smith Aand Geoservices [Member] Carrying value of impaired intangible asset. Carrying Value Of Impaired Intangible Asset Carrying Value Of Impaired Intangible Asset [Member] North America North America [Member] Severance. Severance Severance [Member] Other Restructuring Valuation allowance. Asset performance solutions investment. Right of use asset impairments. Costs associated with exiting certain activities1. Allowance For Doubtful Accounts Allowance For Credit Loss [Member] Latin America Latin America [Member] Postretirement benefits curtailment gain. Investment, Name Schedule Of Equity Method Investment Equity Method Investee Name [Axis] Investment, Name Equity Method Investee Name [Domain] Liberty Oilfield Services Inc. Liberty Oilfield Services Inc. Liberty Oilfield Services Inc [Member] Ten Reporting Units. Ten Reporting Units Ten Reporting Units [Member] Nine Reporting Units. Nine Reporting Units Nine Reporting Units [Member] Pressure pumping and other equipment. Charges of Pressure Pumping Equipment Pressure Pumping And Other Equipment [Member] Operating lease right of use asset. Operating Lease Right-of-use Asset Operating Lease Right Of Use Asset [Member] Supplies expense. Supplies Expense Supplies Expense [Member] Inventory related charges. Inventory Charges Inventory Related Charges [Member] Other Business [Member]. Charges Related to Other Businesses Other Business [Member] Production related impairment. Production Related Impairment or Charges Production Related Impairment [Member] Devaluation charge. Devaluation Charge Devaluation Charge [Member] Argentina ARGENTINA Carrying Value of Asset Production Solutions. Carrying Value of Asset Production Solutions Carrying Value Of Asset Production Solutions [Member] Restructuring Charges Restructuring Charges [Member] Acceleration of stock-based compensation expense associated with certain individuals. Acceleration of Stock-based Compensation Expense Associated With Certain Individuals Acceleration Of Stock Based Compensation Expense Associated With Certain Individuals [Member] Business divestiture costs. Business Divestiture Costs Business Divestiture Costs [Member] Debt instrument premium paid on repurchase. Debt Instrument Premium Paid on Repurchase Debt Instrument Premium Paid On Repurchase [Member] Facility and other exit costs. Facility and other exit costs Facility And Other Exit Costs [Member] Write down of assets. Write Down Of Assets Write Down Of Assets [Member] Other exit costs. Other Exit Costs Other Exit Costs [Member] Sale of assets. Sale Of Assets Sale Of Assets [Member] Facility closure costs. Facility Closure Costs Facility Closure Costs [Member] Ownership Ownership [Axis] Ownership Ownership [Domain] Rockwell automation. Rockwell Automation Rockwell Automation [Member] Schlumberger. Schlumberger Schlumberger [Member] Marine Seismic Acquisition Business Shearwater GeoServices. Shearwater GeoServices Shearwater Geo Services [Member] Impairments and other. Impairments and Other Impairments And Other [Member] Impairment of long-lived assets. Impairment of Long-Lived Assets Impairment Of Long Lived Assets [Member] Total number of reporting units Number Of Reporting Units Goodwill Goodwill Gross Goodwill impairment charge Goodwill And Intangible Asset Impairment Discount rate utilized. Expected increase decrease in discount rate assumption. Number of reporting units fair value to be impacted Expected percentage change in fair value of reporting units. Discount rate utilized Discount Rate Utilized Expected increase/decrease in discount rate assumption Expected Increase Decrease In Discount Rate Assumption Number of reporting units fair value to be impacted Number Of Reporting Units Fair Value To Be Impacted Expected percentage change in fair value of reporting units Expected Percentage Change In Fair Value Of Reporting Units Impairments and other charges. Intangible assets Impairments And Other Charges Decrease in number of employees. Intangible assets Restructuring Costs And Asset Impairment Charges Reduction in workforce Decrease In Number Of Employees Restructuring Charges Restructuring Charges Percentage of equity ownership interest Equity Method Investment Ownership Percentage Investment Investments Unrealized Gain on Investments Unrealized Gain Loss On Investments Investments, Fair Value Investments Fair Value Disclosure Disposition Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit Charges and credits, Noncontolling interests Charges And Credits Impact Of Non Controlling Interest Expected increase in discount rate assumption. Increase in goodwill impairment charge. Expected decrease in discount rate assumption. Decrease in goodwill impairment charge. Expected increase in discount rate assumption Expected Increase In Discount Rate Assumption Increase in goodwill impairment charge Increase In Goodwill Impairment Charge Expected decrease in discount rate assumption Expected Decrease In Discount Rate Assumption Decrease in goodwill impairment charge Decrease In Goodwill Impairment Charge Defined benefit pension plan non-cash settlement charges. Benefits Paid Defined Benefit Plan Plan Assets Benefits Paid Non-cash settlement charge Defined Benefit Pension Plan Non Cash Settlement Charge Debt instrument repurchase expenses. Debt instrument, repurchase amount Debt Instrument Repurchase Expenses Cash recieved Proceeds From Sale Of Equity Method Investments Gain of deconsolidation in formation of joint venture Equity Method Investment Realized Gain Loss On Disposal Charges and credits Raw materials & field materials Inventory Raw Materials And Supplies Work in progress Inventory Work In Process Finished goods Inventory Finished Goods Inventories Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Long-Lived Tangible Asset Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset Property Plant And Equipment Type [Domain] Land Land [Member] Buildings & improvements Building And Building Improvements [Member] Machinery & equipment Machinery And Equipment [Member] Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Fixed assets gross Property Plant And Equipment Gross Less: Accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Fixed assets less accumulated depreciation Building and Building Improvements Machinery and Equipment Useful Life Property Plant And Equipment Useful Life Depreciation expense relating to fixed assets Depreciation Multiclient seismic data capitalized in period. Multiclient seismic data charged to cost of goods sold and services. Multiclient seismic data impairments. Multiclient seismic data other Opening balance Capitalized in period Multiclient Seismic Data Capitalized In Period Charged to expense Multiclient Seismic Data Charged To Cost Of Goods Sold And Services Impairment charge (see Note 3) Multiclient Seismic Data Impairments Other Multiclient Seismic Data Other Ending balance Schedule Of Goodwill [Table] Schedule Of Goodwill [Table] Consolidation Items Consolidation Items [Axis] Consolidation Items Consolidation Items [Domain] Operating Segments Operating Segments [Member] Drilling Statement Business Segments [Axis] Segments Segment [Domain] Reservoir characterization. Reservoir Characterization Reservoir Characterization [Member] Drilling. Drilling Drilling [Member] Production. Production Production [Member] Digital & integration member. Digital Integration Digital Integration [Member] Reservoir performance. Reservoir Performance Reservoir Performance [Member] Well construction. Well Construction Well Construction [Member] Production systems. Production Systems Production Systems [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill, Beginning Balance Impairment (see Note 3) Goodwill Impairment Loss Impact of changes in exchange rates and other Goodwill Translation And Purchase Accounting Adjustments Goodwill, Ending Balance Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Customer Relationships Customer Relationships [Member] Technology/Technical Know-How Developed Technology Rights [Member] Tradenames Trade Names [Member] Other Other Intangible Assets [Member] Finite Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Gross Book Value Finite Lived Intangible Assets Gross Accumulated Amortization Finite Lived Intangible Assets Accumulated Amortization Net Book Value Finite-Lived Intangible Asset, Useful Life Finite Lived Intangible Asset Useful Life Estimated amortization charged to income, 2021 Finite Lived Intangible Assets Amortization Expense Next Twelve Months Estimated amortization charged to income, 2022 Finite Lived Intangible Assets Amortization Expense Year Two Estimated amortization charged to income, 2023 Finite Lived Intangible Assets Amortization Expense Year Three Estimated amortization charged to income, 2024 Finite Lived Intangible Assets Amortization Expense Year Four Estimated amortization charged to income, 2025 Finite Lived Intangible Assets Amortization Expense Year Five Amortization expense Amortization Of Intangible Assets Debt Instrument [Table] Debt Instrument [Table] Long-term Debt, Type Longterm Debt Type [Axis] Long-term Debt, Type Longterm Debt Type [Domain] Commercial paper borrowings Commercial Paper [Member] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Three point six five percent senior notes due two thousand twenty three. 3.65% Senior Notes due 2023 Three Point Six Five Percent Senior Notes Due Two Thousand Twenty Three [Member] Three point nine zero percent senior notes due two thousand twenty eight member. 3.90% Senior Notes due 2028 Three Point Nine Zero Percent Senior Notes Due Two Thousand Twenty Eight [Member] One point three seven five percent notes due two thousand twenty six. 1.375% Guaranteed Notes due 2026 One Point Three Seven Five Percent Notes Due Two Thousand Twenty Six [Member] Senior notes two point four zero percent due two thousand and twenty two. 2.40% Senior Notes due 2022 Senior Notes Two Point Four Zero Percent Due Two Thousand And Twenty Two [Member] Two point zero percent notes due two thousand thirty two. 2.0% Guaranteed Notes due 2032 Two Point Zero Percent Notes Due Two Thousand Thirty Two [Member] Four point zero zero percent notes due two thousand twenty five. 4.00% Senior Notes due 2025 Four Point Zero Zero Percent Notes Due Two Thousand Twenty Five [Member] Four point three zero percent senior notes due two thousand twenty nine member. 4.30% Senior Notes due 2029 Four Point Three Zero Percent Senior Notes Due Two Thousand Twenty Nine [Member] Zero point five zero percent notes due two thousand thirty one. 0.50% Notes due 2031 Zero Point Five Zero Percent Notes Due Two Thousand Thirty One [Member] Three point seven zero percent senior notes due two thousand twenty four member. 3.75% Senior Notes due 2024 Three Point Seven Five Percent Senior Notes Due Two Thousand Twenty Four [Member] Two point six five percent senior notes due two thousand thirty. 2.65% Senior Notes due 2030 Two Point Six Five Percent Senior Notes Due Two Thousand Thirty [Member] Guaranteed notes one point zero zero percent due two thousand twenty six member. 1.00% Guaranteed Notes due 2026 Guaranteed Notes One Point Zero Zero Percent Due Two Thousand Twenty Six [Member] Two point six five percent senior notes due two thousand twenty two. 2.65% Senior Notes due 2022 Two Point Six Five Percent Senior Notes Due Two Thousand Twenty Two [Member] One point four zero percent senior notes due two thousand twenty five 1.40% Senior Notes due 2025 One Point Four Zero Percent Senior Notes Due Two Thousand Twenty Five [Member] Zero point two five percent notes due two thousand twenty seven. 0.25% Notes due 2027 Zero Point Two Five Percent Notes Due Two Thousand Twenty Seven [Member] Three point six three percent senior notes due two thousand and twenty two. 3.63% Senior Notes due 2022 Three Point Six Three Percent Senior Notes Due Two Thousand And Twenty Two [Member] Seven point zero zero percent notes due two thousand thirty eight. 7.00% Notes due 2038 Seven Point Zero Zero Percent Notes Due Two Thousand Thirty Eight [Member] Five point nine five percent notes due two thousand forty one. 5.95% Notes due 2041 Five Point Nine Five Percent Notes Due Two Thousand Forty One [Member] Five point one three percent notes due two thousand forty three. 5.13% Notes due 2043 Five Point One Three Percent Notes Due Two Thousand Forty Three [Member] Zero point zero zero percent notes due two thousand twenty four. 0.00% Notes due 2024 Zero Point Zero Zero Percent Notes Due Two Thousand Twenty Four [Member] Four point zero zero percent notes due two thousand twenty three. 4.00% Notes due 2023 Four Point Zero Zero Percent Notes Due Two Thousand Twenty Three [Member] Three point seven zero percent notes due two thousand and twenty four. 3.70% Notes due 2024 Three Point Seven Zero Percent Notes Due Two Thousand And Twenty Four [Member] Three point three zero percent senior notes due two thousand twenty one. 3.30% Senior Notes due 2021 Three Point Three Zero Percent Senior Notes Due Two Thousand Twenty One [Member] Senior notes four point two zero percent due two thousand twenty one. 4.20% Senior Notes due 2021 Senior Notes Four Point Two Zero Percent Due Two Thousand Twenty One [Member] Debt, other. Other Debt Other [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term debt, carrying amount Debt instrument maturity. 1.375% Notes due 2026 2.0% Notes due 2032 Debt instrument interest rate Debt Instrument Interest Rate Stated Percentage Debt instrument maturity date Debt Instrument Maturity Year Three point zero zero percent senior notes due two thousand twenty. 3.00% Senior Notes due 2020 Three Point Zero Zero Percent Senior Notes Due Two Thousand Twenty [Member] Four point five zero percent notes due two thousand twenty one. 4.5% Senior Notes due 2021 Four Point Five Zero Percent Notes Due Two Thousand Twenty One [Member] Three point six zero percent notes due two thousand twenty two. 3.60% Notes due 2022 Three Point Six Zero Percent Notes Due Two Thousand Twenty Two [Member] Two Point Six Five Percent Senior Notes Due Two Thousands Thirty Member 2.65% Senior Notes due 2030 Two Point Six Five Percent Senior Notes Due Two Thousands Thirty [Member] Three point six twi five percent senior notes due two thousand twenty two. 3.625% Senior Notes due 2022 Three Point Six Two Five Percent Senior Notes Due Two Thousand Twenty Two [Member] Four point zero zero percent senior notes due two thousand twenty five. 4.00% Senior Notes due 2025 Four Point Zero Zero Percent Senior Notes Due Two Thousand Twenty Five [Member] Commercial paper programs maturing february two zero two three. Commercial paper programs mature in February 2023 Commercial Paper Programs Maturing February Two Zero Two Three [Member] Commercial Paper Programs Maturing July Two Zero Twenty Five. Commercial paper programs mature in July 2025 Commercial Paper Programs Maturing July Two Zero Twenty Five [Member] Commercial Paper Programs Maturing February Two Zero Twenty Five. Commercial paper programs mature in February 2024 Commercial Paper Programs Maturing February Two Zero Twenty Five [Member] Commercial Paper Programs Maturing June Two Zero Two One. Commercial paper programs mature in June 2021 Commercial Paper Programs Maturing June Two Zero Two One [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Schlumberger Investment SA. Schlumberger Investment SA Schlumberger Investment S A [Member] Notes, face amount Debt Instrument Face Amount Debt instrument, repurchase amount Debt Instrument Repurchase Amount Debt instrument premium paid on repurchase Redemption Premium Debt instrument amount exchanged. Debt instrument exchange, payment of premium. Debt instrument, amount exchanged Debt Instrument Amount Exchanged Debt instrument premium paid Debt Instrument Exchange Payment Of Premium Committed credit facility agreement aggregated Line Of Credit Facility Maximum Borrowing Capacity Unused credit facility Line Of Credit Facility Remaining Borrowing Capacity Long-term debt Long Term Debt Weighted average interest rate on variable rate debt. Weighted average interest rate on variable rate debt Weighted Average Interest Rate On Variable Rate Debt Longterm debt maturities repayments of principal in year six. Long term debt maturities repayments of principal in year seven. Long term debt maturities repayments of principal in year eight. Long term debt maturities repayments of principal in year nine and thereafter. Long-term Debt maturity in 2022 Long Term Debt Maturities Repayments Of Principal In Year Three Long-term Debt maturity in 2023 Long Term Debt Maturities Repayments Of Principal In Year Four Long-term Debt maturity in 2024 Long Term Debt Maturities Repayments Of Principal In Year Five Long-term Debt maturity in 2025 Long Term Debt Maturities Repayments Of Principal In Year Six Long-term Debt maturity in 2026 Long Term Debt Maturities Repayments Of Principal In Year Seven Long-term Debt maturity in 2027 Long Term Debt Maturities Repayments Of Principal In Year Eight Long-term Debt maturity thereafter Long Term Debt Maturities Repayments Of Principal In Year Nine And Thereafter Long-term debt, fair value Debt Instrument Fair Value Investment in subsidiary Subsidiary Of Limited Liability Company Or Limited Partnership Ownership Interest percentage of revenue denominated in domestic currency. Derivative [Table] Derivative [Table] Derivative Instrument Derivative Instrument Risk [Axis] Derivative Contract Derivative Contract Type [Domain] Cross currency swaps Cross Currency Interest Rate Contract [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Other Assets Other Assets [Member] Other Liabilities Other Liabilities [Member] Two point two zero percent senior notes due two thousand thirty two. 2.00% Notes due 2032 Two Point Zero Percent Senior Notes Due Two Thousand Thirty Two [Member] Foreign exchange contracts Foreign Exchange Contract [Member] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] Debt Debt [Member] Hedging Designation Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Derivatives designated as hedges Designated As Hedging Instrument [Member] Derivative [Line Items] Derivative [Line Items] Number of countries in which Schlumberger generates revenue Percentage of revenue denominated in domestic currency Percentage Of Revenue Denominated In Domestic Currency Derivative assets Derivative Assets Derivative liability Derivative Liabilities Denominated debt issued Debt Instrument Carrying Amount Notional amount of interest rate swap Derivative Notional Amount Notes, face amount Derivative swap interest rate Derivative Swaption Interest Rate Promissory note interest rate Transaction gains (losses) of hedging activities Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments Fair value of outstanding derivatives Derivative Fair Value Of Derivative Net 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] Hedging Relationship Derivative Instruments Gain Loss By Hedging Relationship [Axis] Hedging Relationship Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Derivatives not designated as hedges Nondesignated [Member] Cost of services/sales Cost Of Sales [Member] Cost of services/sales Derivative Instruments Gain Loss [Line Items] Derivative Instruments Gain Loss [Line Items] Gain (Loss) Recognized in Income Derivative Gain Loss On Derivative Net Common stock, shares authorized Common Stock Shares Authorized Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares outstanding Common Stock Shares Outstanding Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, issued Preferred Stock Shares Issued Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income Loss [Table] Currency Translation Adjustments Accumulated Translation Adjustment [Member] Marketable Securities Accumulated Net Unrealized Investment Gain Loss [Member] Cash Flow Hedges Accumulated Gain Loss Net Cash Flow Hedge Parent [Member] Pension and Other Postretirement Benefit Plans Accumulated Defined Benefit Plans Adjustment [Member] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income Loss [Line Items] Reclassification to Retained Earnings of stranded tax effects resulting from US tax reform Other comprehensive income (loss) before reclassifications Other Comprehensive Income Loss Before Reclassifications Before Tax Amounts reclassified from accumulated other comprehensive loss Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax Income taxes Other Comprehensive Income Loss Tax Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Stock option maximum term. Share based compensation arrangement by share based payment award award vesting periods. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Employee Stock Option Performance Shares Performance Shares [Member] Scenario Statement Scenario [Axis] Scenario Scenario Unspecified [Domain] Achievement exceeds predefined target. Achievement Exceeds Predefined Target Achievement Exceeds Predefined Target [Member] Achievement falls below threshold. Achievement Falls Below Threshold Achievement Falls Below Threshold [Member] Restricted Stock Restricted Stock [Member] Discounted Stock Purchase Plan. DSPP Discounted Stock Purchase Plan [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Stock option maximum term Stock Option Maximum Term Stock options vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Periods Dividend yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Risk-free interest rate Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Expected option life in years Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Weighted-average fair value per share Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Table] Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Table] Exercise Price Range Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Axis] Exercise Price Range Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Domain] Exercise​ prices ​range​ one​. Exercise prices range $38.75 - $69.98 Exercise Prices Range One [Member] Exercise​ prices ​range​ two​. Exercise prices range $70.31 - $76.74 Exercise Prices Range Two [Member] Exercise​ prices ​range​ three​. Exercise prices range $77.10 - $83.15 Exercise Prices Range Three [Member] Exercise​ prices ​range​ four. Exercise prices range $83.89 - $88.77 Exercise Prices Range Four [Member] Exercise​ prices ​range​ five. Exercise prices range $90.00 - $114.83 Exercise Prices Range Five [Member] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] Exercise prices minimum range Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit Exercise prices maximum range Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit Options Outstanding Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options Options Outstanding, Weighted-Average Remaining Contractual Life (in years) Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 Options Outstanding, Weighted- Average Exercise Price Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 Options Exercisable Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options Options Exercisable, Weighted-Average Exercise Price Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 Weighted-average remaining contractual life of stock options exercisable, in years Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Outstanding at beginning of year, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Granted, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Exercised, Shares Stock Issued During Period Shares Stock Options Exercised Forfeited, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Outstanding at year-end, Shares Outstanding at beginning of year, Weighted-Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Granted, Weighted-Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Exercised, Weighted-Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Forfeited, Weighted-Average Exercise Price Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Outstanding at year-end, Weighted-Average Exercise Price Intrinsic value of stock options outstanding Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Intrinsic value of stock options exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Total intrinsic value of options exercised Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value Share based compensation arrangement by share based payment award equity instruments other than options percentage of shares awarded. Performance shares to be awarded as a percentage of total target award Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Percentage Of Shares Awarded Performance shares to be awarded Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Performance shares outstanding Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Restricted stock awards, vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Unvested at beginning of year, Restricted Stock Granted, Restricted Stock Vested, Restricted Stock Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Forfeited, Restricted Stock Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Unvested at year-end, Restricted Stock Unvested at beginning of year, Weighted-Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Granted, Weighted-Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Vested, Weighted-Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Forfeited, Weighted-Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Unvested at year-end, Weighted-Average Grant Date Fair Value Percentage purchase price of stock lower of stock price at beginning or end of plan period at specified intervals Sharebased Compensation Arrangement By Sharebased Payment Award Purchase Price Of Common Stock Percent Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year one. Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year two. Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year three. Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year four. Total unrecognized compensation cost related to nonvested stock-based compensation arrangements Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Expected to be recognized in 2021 Employee Service Share Based Compensation Unrecognized Compensation Costs On Nonvested Awards Expected To Be Recognized In Year One Expected to be recognized in 2022 Employee Service Share Based Compensation Unrecognized Compensation Costs On Nonvested Awards Expected To Be Recognized In Year Two Expected to be recognized in 2023 Employee Service Share Based Compensation Unrecognized Compensation Costs On Nonvested Awards Expected To Be Recognized In Year Three Expected to be recognized in 2024 Employee Service Share Based Compensation Unrecognized Compensation Costs On Nonvested Awards Expected To Be Recognized In Year Four Future Grants Shares Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Minimum number of jurisdictions to company operates. Income tax disclosure. Income Tax Disclosure Income Tax Disclosure [Table] Income Tax Disclosure [Table] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Minimum number of jurisdictions to Schlumberger operates Minimum Number Of Jurisdictions To Company Operates US federal statutory rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Income before taxes, United States Income Loss From Continuing Operations Before Income Taxes Domestic Income before taxes, Outside United States Income Loss From Continuing Operations Before Income Taxes Foreign Restructuring and other charges. Income Tax Authority Income Tax Authority [Axis] Income Tax Authority Income Tax Authority [Domain] Domestic Country Domestic Country [Member] Foreign Country Foreign Country [Member] Restructuring and other charges Restructuring And Other Charges Deferred tax assets liabilities property plant and equipment, net. Intangible assets Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets Net operating losses Deferred Tax Assets Operating Loss Carryforwards Fixed assets, net Deferred Tax Assets Liabilities Property Plant And Equipment Net Inventories Deferred Tax Assets Inventory Investments in non-US subsidiaries Deferred Tax Liabilities Investment In Noncontrolled Affiliates Foreign tax credits Deferred Tax Assets Tax Credit Carryforwards Foreign Other, net Deferred Tax Assets Other Net deferred tax assets (liabilities) Deferred Tax Liabilities Deferred tax assets, valuation allowances relating to net operating losses in certain countries Deferred Tax Assets Operating Loss Carryforwards Foreign Deferred tax assets, capital losses Deferred Tax Assets Capital Loss Carryforwards Current: Current Income Tax Expense Benefit Continuing Operations [Abstract] United States-Federal Current Federal Tax Expense Benefit United States-State Current State And Local Tax Expense Benefit Outside United States Current Foreign Tax Expense Benefit Current Income Tax Expense (Benefit), Total Current Income Tax Expense Benefit Deferred: Deferred Income Tax Expense Benefit Continuing Operations [Abstract] United States-Federal Deferred Federal Income Tax Expense Benefit United States-State Deferred State And Local Income Tax Expense Benefit Outside United States Deferred Foreign Income Tax Expense Benefit Valuation allowance Valuation Allowance Deferred Tax Asset Change In Amount Deferred income taxes Consolidated taxes on (loss) income Charges and credits. Charges And Credits Charges And Credits [Member] Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items] Disclosure Income Tax Reconciliation Of U S Statutory Federal Tax Rate Detail [Line Items] State tax Effective Income Tax Rate Reconciliation State And Local Income Taxes Non-US income taxed at different rates Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential Charges and credits (See Note 3) Effective Income Tax Rate Reconciliation Nondeductible Expense Other Effective Income Tax Rate Reconciliation Other Adjustments Effective income tax rate Effective Income Tax Rate Continuing Operations Unrecognized tax benefits increases (decreases) resulting from changes in exchange rates. Balance at beginning of year Unrecognized Tax Benefits Additions based on tax positions related to the current year Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions Additions for tax positions of prior years Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions Impact of changes in exchange rates Unrecognized Tax Benefits Increases Decreases Resulting From Changes In Exchange Rates Settlements with tax authorities Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities Reductions for tax positions of prior years Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions Reductions due to the lapse of the applicable statute of limitations Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations Balance at end of year Accrued interest and penalties Income Tax Examination Penalties And Interest Accrued Income Tax Examination [Table] Income Tax Examination [Table] Canada CANADA Ecuador ECUADOR Mexico Norway NORWAY Russia RUSSIAN FEDERATION Saudi Arabia SAUDI ARABIA United Kingdom UNITED KINGDOM United States UNITED STATES Tax Period Tax Period [Axis] Tax Period Tax Period [Domain] Earliest Tax Year Earliest Tax Year [Member] Latest Tax Year Latest Tax Year [Member] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Income tax examination, year(s) under examination Income Tax Examination Year Under Examination Accounts Payable and Accrued Liabilities Accounts Payable And Accrued Liabilities [Member] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Total rental expense Operating Lease Expense 2021 Lessee Operating Lease Liability Payments Due Next Twelve Months 2022 Lessee Operating Lease Liability Payments Due Year Two 2023 Lessee Operating Lease Liability Payments Due Year Three 2024 Lessee Operating Lease Liability Payments Due Year Four 2025 Lessee Operating Lease Liability Payments Due Year Five Thereafter Lessee Operating Lease Liability Payments Due After Year Five Total lease payments Lessee Operating Lease Liability Payments Due Less: Interest Lessee Operating Lease Liability Undiscounted Excess Amount Operating lease, liability Operating Lease Liability Operating lease, asset Operating Lease Right Of Use Asset Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List Operating lease, weighted average remaining lease term Operating Lease Weighted Average Remaining Lease Term1 Operating lease, weighted average discount rate, percent Operating Lease Weighted Average Discount Rate Percent Capital investments. Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Eliminations & other Material Reconciling Items [Member] Corporate and Other Corporate And Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenue Income Before Taxes Assets Depreciation and Amortization Capital Investments Capital Investments Corporate and other expenses. Cash short term investments and fixed income investments. Pretax segment operating income Operating Income Loss Goodwill and intangible assets Intangible Assets Net Including Goodwill Cash and short-term investments Cash Cash Equivalents And Short Term Investments Cash, short term investments and fixed income investments Cash Short Term Investments And Fixed Income Investments All other assets Other Assets Corporate & other Corporate And Other Expenses Interest income Interest Income Operating Interest expense Charges & credits Eliminations & other Geography Eliminations [Member] Region of Europe, CIS, and Africa. Europe/CIS/Africa Europe C I S Africa [Member] Middle East & Asia Middle East [Member] Eliminations & other member. Eliminations & Other Eliminations Other [Member] International Non Us [Member] Unallocated Europe Europe [Member] Fixed Assets Noncurrent Assets Schedule Of Defined Benefit Plans Disclosures [Table] Schedule Of Defined Benefit Plans Disclosures [Table] International Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location Retirement Plan Sponsor Location [Domain] Domestic Plan Domestic Plan [Member] US International Foreign Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Discount rate Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Compensation increases Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase Return on plan assets Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets Retirement Plan Type Retirement Plan Type [Axis] Retirement Plan Type Retirement Plan Type [Domain] Postretirement medical plan Defined Benefit Postretirement Health Coverage [Member] Service cost - benefits earned during the period Defined Benefit Plan Service Cost Interest cost on projected benefit obligation Defined Benefit Plan Interest Cost Expected return on plan assets Defined Benefit Plan Expected Return On Plan Assets Amortization of prior service cost Defined Benefit Plan Amortization Of Prior Service Cost Credit Amortization of net loss Defined Benefit Plan Amortization Of Gains Losses Settlement charge Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 Total pension cost Defined Benefit Plan Net Periodic Benefit Cost US Employees Postretirement Benefits Other Than Pensions Other Postretirement Benefit Plans Defined Benefit [Member] Defined Benefit Plan, Plan Assets, Category Defined Benefit Plan By Plan Asset Categories [Axis] Defined Benefit Plan, Plan Assets, Category Plan Asset Categories [Domain] Equity securities Defined Benefit Plan Equity Securities Us [Member] Government and government-related debt securities U S Treasury And Government [Member] Discount rate Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Compensation increases Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase Change in Projected Benefit Obligations Defined Benefit Plan Change In Benefit Obligation Roll Forward Projected benefit obligation at beginning of year Defined Benefit Plan Benefit Obligation Service cost Interest cost Contribution by plan participants Defined Benefit Plan Benefit Obligation Contributions By Plan Participant Actuarial losses Defined Benefit Plan Actuarial Gain Loss Currency effect Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation Settlement Defined Benefit Plan Settlements Benefit Obligation Benefits paid Defined Benefit Plan Benefit Obligation Benefits Paid Projected benefit obligation at end of year Change in Plan Assets Defined Benefit Plan Change In Fair Value Of Plan Assets Roll Forward Plan assets at fair value at beginning of year Defined Benefit Plan Fair Value Of Plan Assets Actual return on plan assets Defined Benefit Plan Actual Return On Plan Assets Currency effect Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss Company contributions Defined Benefit Plan Contributions By Employer Contributions by plan participants Defined Benefit Plan Plan Assets Contributions By Plan Participant Settlement Defined Benefit Plan Settlements Plan Assets Benefits paid Plan assets at fair value at end of year Unfunded Liability Defined Benefit Plan Funded Status Of Plan Amounts Recognized in Balance Sheet Defined Benefit Plan Amounts Recognized In Balance Sheet [Abstract] Postretirement Benefits Other Assets Defined Benefit Plan Assets For Plan Benefits Noncurrent Total of post retirement benefits Defined Benefit Plan Amounts Recognized In Balance Sheet Amounts Recognized in Accumulated Other Comprehensive Loss Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax [Abstract] Actuarial losses Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax Prior service cost Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax Total amount recognized in accumulated other comprehensive income Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax Accumulated benefit obligation Defined Benefit Plan Accumulated Benefit Obligation Fair value of excess of plan assets, projected benefit obligation Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets Projected benefit obligation plan assets Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation Accumulated benefit obligation plan assets Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation Equity securities Equity Securities [Member] Debt securities Debt Securities [Member] Cash and cash equivalents Cash And Cash Equivalents [Member] Alternative investments. Alternative investments Alternative Investments [Member] Target Allocation Percentage of Assets Defined Benefit Plan Plan Assets Target Allocation Percentage Target allocation of assets Defined Benefit Plan Weighted Average Asset Allocations Frequency of asset performance monitored years. Frequency of asset performance monitored, years Frequency Of Asset Performance Monitored Period Equity securities, US Equity securities, International Defined Benefit Plan Equity Securities Non Us [Member] Corporate bonds Corporate Debt Securities [Member] Collateralized mortgage obligations and mortgage backed securities Mortgage Backed Securities Issued By U S Government Sponsored Enterprises [Member] Private equity Private Equity Funds [Member] Real estate Real Estate [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Level One Fair Value Inputs Level1 [Member] Level Two Fair Value Inputs Level2 [Member] Level Three Fair Value Inputs Level3 [Member] Other Other Contract [Member] Plan assets at fair value Expected contributions to postretirement benefit plans Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year Retirement coverage plan, description Defined Benefit Plan Explanation Of Significant Change In Benefit Obligation Or Plan Assets Not Apparent From Other Required Disclosures Defined benefit plan health care cost trend rate current year. Current medical cost trend rate Defined Benefit Plan Health Care Cost Trend Rate Current Year Ultimate medical cost trend rate Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 Year that the rate reaches the ultimate trend rate Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Curtailment gain Curtailment Defined Benefit Plan Curtailments Asset (Unfunded Liability) Prior service credit Investment of assets in government and government-related debt securities under US postretirement medical plan 2021 Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months 2022 Defined Benefit Plan Expected Future Benefit Payments Year Two 2023 Defined Benefit Plan Expected Future Benefit Payments Year Three 2024 Defined Benefit Plan Expected Future Benefit Payments Year Four 2025 Defined Benefit Plan Expected Future Benefit Payments Year Five 2026-2030 Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter Interest Interest Paid Income tax Income Taxes Paid Net Equity in net earnings of affiliated companies. Earnings of equity method investments Equity In Net Earnings Of Affiliated Companies Interest income Investment Income Interest Unrealized gain on marketable securities Marketable Securities Unrealized Gain Loss Interest and other income, net Balance at beginning of year Additions Provision For Doubtful Accounts Amounts written off Allowance For Loan And Lease Losses Writeoffs Net Balance at end of year Contract with customer liability revenue in excess of billings. Revenue in excess of billings Contract With Customer Liability Revenue In Excess Of Billings Contract with customer liability revenue in excess of billings and cash collections current. Accounts payable and accrued liabilities other. Trade Accounts Payable Trade Current Payroll, vacation and employee benefits Employee Related Liabilities Current Billings and cash collections in excess of revenue Contract With Customer Liability Revenue In Excess Of Billings And Cash Collections Current Other Accounts Payable And Accrued Liabilities Other Accounts payable and accrued liabilities