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Derivative Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 USD ($) Country	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2019 EUR (€)	Jun. 30, 2017
Derivative [Line Items]
Fixed rate debt aggregate	$ 12,900,000,000
Variable rate debt aggregate	$ 2,400,000,000
Number of countries in which Schlumberger generates revenue | Country	120
Percentage of revenue denominated in domestic currency	78.00%
Denominated debt issued			$ 1,100,000,000	€ 1,500,000,000
Promissory note interest rate					6.50%
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	$ 34,000,000
Transaction gains (losses) of hedging activities	2,000,000	$ 1,000,000	(17,000,000)
Fair value of outstanding derivatives	$ 0	$ 0
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%
0.00% Notes due 2024
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Derivative swap interest rate				0.00%
Promissory note interest rate	0.00%	0.00%		0.00%
0.25% Notes due 2027
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Derivative swap interest rate				0.25%
Promissory note interest rate	0.25%	0.25%		0.25%
Notes due 2031
Derivative [Line Items]
Notes, face amount | €				€ 500,000,000
Cross currency swaps
Derivative [Line Items]
Notional amount of interest rate swap			$ 1,100,000,000	€ 1,500,000,000
Cross currency swaps | 2.20% Senior Notes due 2020
Derivative [Line Items]
Promissory note interest rate			1.97%
Cross currency swaps | 2.65% Senior Notes due 2022
Derivative [Line Items]
Promissory note interest rate			2.52%
Cross currency swaps | 0.00% Notes due 2024
Derivative [Line Items]
Promissory note interest rate				2.29%
Cross currency swaps | 0.25% Notes due 2027
Derivative [Line Items]
Promissory note interest rate				2.51%
Cross currency swaps | Notes due 2031
Derivative [Line Items]
Promissory note interest rate				2.76%
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 7,700,000,000
Foreign exchange contracts | Debt | Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 3,000,000,000.0

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