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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Income Tax Disclosure [Line Items]      
Restructuring and other charges $ 439slb_RestructuringAndOtherCharges $ 0slb_RestructuringAndOtherCharges  
Deferred tax assets, valuation allowances relating to net operating losses in certain countries 172us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign   190us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
US federal statutory rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate  
Domestic Country      
Income Tax Disclosure [Line Items]      
Restructuring and other charges 93slb_RestructuringAndOtherCharges
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		    
Foreign Country      
Income Tax Disclosure [Line Items]      
Restructuring and other charges $ 346slb_RestructuringAndOtherCharges
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember