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Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) Country	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2017	Dec. 31, 2013 EUR (€)
Derivative [Line Items]
Denominated debt issued			$ 1,100,000,000
Promissory note interest rate					6.50%
Fixed rate debt aggregate, after taking into account the effects of the interest rate swaps		$ 12,700,000,000
Variable rate debt aggregate, after taking into account the effects of the interest rate swaps		$ 3,400,000,000
Number of countries in which Schlumberger conducts business | Country		85
Percentage of revenue denominated in domestic currency		79.00%
Recognized a cumulative net gain in Accumulated other comprehensive loss relating to revaluation of foreign currency forward contracts and foreign currency options designated as cash flow hedges		$ 12,000,000
Transaction gains (losses) of hedging activities		1,000,000	(17,000,000)	$ (93,000,000)
Restructuring and other charges		141,000,000	3,764,000,000	3,820,000,000
Fair value of outstanding derivatives		$ 0	$ 0
Currency Devaluation Losses In Egypt
Derivative [Line Items]
Restructuring and other charges	$ 63,000,000			$ 63,000,000
1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Notes, face amount | €						€ 500,000,000
Promissory note interest rate		1.50%	1.50%
2.20% Senior Notes due 2020
Derivative [Line Items]
Notes, face amount			$ 500,000,000
Derivative swap interest rate			2.20%
Promissory note interest rate		2.20%	2.20%
2.65% Senior Notes due 2022
Derivative [Line Items]
Notes, face amount			$ 600,000,000
Derivative swap interest rate			2.65%
Promissory note interest rate		2.65%	2.65%
Cross currency swap
Derivative [Line Items]
Notional amount of interest rate swap			$ 1,100,000,000			€ 500,000,000
Cross currency swap | 2.20% Senior Notes due 2020
Derivative [Line Items]
Promissory note interest rate			1.97%
Cross currency swap | 2.65% Senior Notes due 2022
Derivative [Line Items]
Promissory note interest rate			2.52%
Fixed Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Derivative swap interest rate						1.50%
Floating Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Floating interest rate on securities		three-month LIBOR plus approximately 64 basis points
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap		$ 5,000,000,000
Foreign exchange contracts | Debt | Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap		$ 1,900,000,000
London Interbank Offered Rate (LIBOR) | Floating Rate Debt | 1.50% Guaranteed Notes due 2019
Derivative [Line Items]
Basis point		0.64%

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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