Credit facility withdrawal amount.

No definition available.

Name:	slb_CreditFacilityWithdrawalAmount
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt instrument maturity.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Balance Type:	credit
Period Type:	instant

- Definition

The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Long-term Debt - Additional Information (Detail) € in Millions, $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2021 EUR (€)	Jun. 30, 2020 EUR (€)	Dec. 31, 2019 EUR (€)
Debt Instrument [Line Items]
Long-term debt, fair value			$ 16,700	$ 17,300
Committed credit facility agreement aggregated			$ 5,750
Credit facility extended date			Jun. 30, 2024
Unused credit facility			$ 5,560
Redemption Premium	$ 40
Long-term debt, carrying amount			15,687	$ 16,036
3.30% Senior Notes due 2021
Debt Instrument [Line Items]
Notes, face amount	$ 935		$ 665
Debt instrument interest rate	3.30%					3.30%
Debt instrument maturity date	2021
0.25% Notes due 2027
Debt Instrument [Line Items]
Notes, face amount \| €		€ 400					€ 500
Debt instrument interest rate		0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date		2027	2027	2027
Long-term debt, carrying amount			$ 1,072	$ 1,100
0.50% Notes due 2031
Debt Instrument [Line Items]
Notes, face amount \| €		€ 400					€ 500
Debt instrument interest rate		0.50%	0.50%	0.50%	0.50%
Debt instrument maturity date		2031	2031	2031
Long-term debt, carrying amount			$ 1,071	$ 1,099
1.375% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Notes, face amount \| €						€ 1,000
Debt instrument interest rate	1.375%		1.375%	1.375%	1.375%	1.375%
Debt instrument maturity date	2026		2026	2026
Long-term debt, carrying amount			$ 1,191	$ 1,221
2.65% Senior Notes due 2030
Debt Instrument [Line Items]
Notes, face amount	$ 900
Debt instrument interest rate	2.65%					2.65%
Debt instrument maturity date	2030
2.0% Guaranteed Notes due 2032
Debt Instrument [Line Items]
Notes, face amount \| €						€ 1,000
Debt instrument interest rate	2.00%		2.00%	2.00%	2.00%	2.00%
Debt instrument maturity date	2032		2032	2032
Long-term debt, carrying amount			$ 1,184	$ 1,214
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Notes, face amount	$ 600
Debt instrument interest rate	4.20%					4.20%
Debt instrument maturity date	2021
Commercial paper programs mature in February 2023
Debt Instrument [Line Items]
Committed credit facility agreement aggregated			2,750
Commercial paper programs mature in July 2025
Debt Instrument [Line Items]
Committed credit facility agreement aggregated			1,000
Commercial paper programs mature in February 2025
Debt Instrument [Line Items]
Committed credit facility agreement aggregated			2,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt			200	400
Long-term debt, carrying amount			$ 192	$ 393
Guaranteed Euro Medium Term Note Program
Debt Instrument [Line Items]
Long-term debt, carrying amount \| €						€ 5,000
Revolving Credit Facility
Debt Instrument [Line Items]
Committed credit facility agreement aggregated \| €					€ 1,540
Credit facility extended period			3 years
Reduced size of credit facility \| €					€ 750
Credit facility drawn			$ 0