Fixed rate debt.

No definition available.

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- Definition

Variable rate debt.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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

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Period Type:	instant

- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The amount of net gains or losses on foreign currency cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

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Derivative Instruments and Hedging Activities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2020 USD ($) Country	Jun. 30, 2020 EUR (€) Country	Mar. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Dec. 31, 2017 USD ($)
Derivative [Line Items]
Fixed rate debt aggregate	$ 15,500,000,000
Variable rate debt aggregate	$ 1,900,000,000
Number of countries in which Schlumberger generates revenue \| Country	120	120
Denominated debt issued		€ 2,000,000,000.0	€ 800,000,000	€ 1,500,000,000	$ 1,100,000,000
Recognized a cumulative loss in accumulated other comprehensive loss relating to changes in the fair value of foreign currency forward contracts and cross-currency swaps	$ 260,000,000
2.20% Senior Notes due 2020
Derivative [Line Items]
Notes, face amount					$ 500,000,000
Derivative swap interest rate					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%		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 \| €		€ 1,000,000,000.0	€ 400,000,000	€ 500,000,000
Derivative swap interest rate	1.375%	1.375%	0.25%	0.25%
Promissory note interest rate	0.25%	0.25%	0.25%	0.25%
0.50% Notes due 2031
Derivative [Line Items]
Notes, face amount \| €			€ 400,000,000	€ 500,000,000
Derivative swap interest rate			0.50%	0.50%
Promissory note interest rate	0.50%	0.50%	0.50%	0.50%
0.50% Notes due 2031
Derivative [Line Items]
Notes, face amount \| €			€ 400,000,000
Derivative swap interest rate			0.50%
1.375% Notes due 2026
Derivative [Line Items]
Notes, face amount \| €		€ 1,000,000,000.0
Derivative swap interest rate	1.375%	1.375%
Promissory note interest rate	1.375%	1.375%		1.375%
2.00% Notes due 2032
Derivative [Line Items]
Notes, face amount \| €		€ 600,000,000
Derivative swap interest rate	2.00%	2.00%
Cross currency swaps
Derivative [Line Items]
Notional amount of interest rate swap		€ 1,600,000,000	€ 800,000,000	€ 1,500,000,000	$ 1,100,000,000
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			1.87%	2.51%
Cross currency swaps \| 0.50% Notes due 2031
Derivative [Line Items]
Promissory note interest rate			2.20%	2.76%
Cross currency swaps \| 1.375% Notes due 2026
Derivative [Line Items]
Promissory note interest rate	2.77%	2.77%
Cross currency swaps \| 2.00% Notes due 2032
Derivative [Line Items]
Promissory note interest rate	3.45%	3.45%
Foreign exchange contracts
Derivative [Line Items]
Notional amount of interest rate swap	$ 9,800,000,000
Foreign exchange contracts \| Debt \| Derivatives designated as hedges
Derivative [Line Items]
Notional amount of interest rate swap	$ 6,000,000,000.0