Charges and Credits - Additional Information (Detail) $ in Millions	3 Months Ended						12 Months Ended
	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($) VEF / $	Dec. 31, 2014 USD ($) VEF / $	Dec. 31, 2013 USD ($)	Jun. 30, 2013 USD ($)	Mar. 31, 2013 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) Vessel VEF / $	Dec. 31, 2013 USD ($)	Feb. 28, 2013 VEF / $	Dec. 31, 2012 VEF / $
Charges And Credits [Line Items]
Restructuring and other charges							$ 2,575	$ 1,773	$ 420
Exchange rate | VEF / $		192
Foreign currency transactions, description							This change results in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income in Venezuela. If Schlumberger had applied an exchange rate of 192 Venezuelan Bolivares fuertes to the US dollar throughout 2014, it would have reduced Schlumberger earnings by approximately $0.09 per share.
Vessel termination, description							Three previous-generation acquisition vessels with lower towing capacity and higher operating costs will be converted to source vessels, allowing for the termination of two third-party source vessel leases and the retirement of two owned source vessels.
Impairment charge, Pretax			$ 199
Charges, Pretax			$ 296
Charges and credits, Pretax									(420)
Charges and credits, Net									(469)
Venezuela Bolivar Official Currency Exchange Rate To Dollar
Charges And Credits [Line Items]
Exchange rate | VEF / $			6.3					6.3		6.3	4.3
Venezuela Bolivar Official Currency Exchange Rate To Dollar | SICAD I
Charges And Credits [Line Items]
Exchange rate, approximated | VEF / $			11					11
Venezuela Bolivar Official Currency Exchange Rate To Dollar | SICAD II
Charges And Credits [Line Items]
Exchange rate, approximated | VEF / $			50					50
Certain intangible assets
Charges And Credits [Line Items]
Impairment charge, Pretax								$ 85
Current Market Conditions
Charges And Credits [Line Items]
Impairment and restructuring charges	$ 84
Other Than Temporary Impairment Of Marketable Securities
Charges And Credits [Line Items]
Impairment and restructuring charges	40
Equity Method Investments
Charges And Credits [Line Items]
Impairment and restructuring charges	15
Lease termination costs
Charges And Credits [Line Items]
Impairment and restructuring charges	177
Provision For Accounts Receivable
Charges And Credits [Line Items]
Charges and credits, Pretax									152
Charges and credits, Net									122
Explorer-class vessels
Charges And Credits [Line Items]
Impairment charge, Pretax								590
Explorer-class vessels | Eastern Echo Holdings Plc.
Charges And Credits [Line Items]
Impairment charge, Pretax								$ 590
Number of vessels acquired | Vessel								6
Other seismic assets | Lease termination costs
Charges And Credits [Line Items]
Restructuring, other pretax charge								$ 131
Lower-Tier Drilling Rigs | Pressure Pumping And Other Equipment | North America
Charges And Credits [Line Items]
Impairment and restructuring charges	776
Workforce reduction
Charges And Credits [Line Items]
Restructuring and other charges	530	$ 390					$ 360
Inventory Write Down | North America
Charges And Credits [Line Items]
Impairment and restructuring charges	269
Impairment of SPM Project
Charges And Credits [Line Items]
Impairment and restructuring charges	182
Geopolitical Events | Middle East
Charges And Credits [Line Items]
Impairment and restructuring charges	77
Contract termination costs
Charges And Credits [Line Items]
Impairment and restructuring charges	$ 41
Currency Devaluation Loss In Venezuela
Charges And Credits [Line Items]
Restructuring and other charges		$ 49	$ 472
Charges and credits, Pretax									92
Charges and credits, Net									92
Cost Of Revenue | Provision For Accounts Receivable
Charges And Credits [Line Items]
Charges and credits, Pretax				$ 152
Gain On Formation Of OneSubsea Joint Venture
Charges And Credits [Line Items]
Charges and credits, Pretax									(1,028)
Charges and credits, Net									(1,028)
Gain On Formation Of OneSubsea Joint Venture | Gain on formation of OneSubsea
Charges And Credits [Line Items]
Charges and credits, Pretax					$ 1,028
Charges and credits, Net					1,028
Impairment Of Equity Method Investments
Charges And Credits [Line Items]
Charges and credits, Pretax									364
Charges and credits, Net									$ 345
Impairment Of Equity Method Investments | Drilling Related Technology
Charges And Credits [Line Items]
Charges and credits, Pretax					222
Impairment Of Equity Method Investments | Contract Drilling
Charges And Credits [Line Items]
Charges and credits, Pretax					$ 142
Other Restructuring
Charges And Credits [Line Items]
Devaluation charge						$ 92