Segment Information - Additional Information (Detail) - USD ($) $ in Billions	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Revenue in excess of billings	$ 0.2	$ 0.2
Total backlog	$ 3.0
Percentage of revenue expected to be recognized over next 12 months	51.00%
Billings and cash collections in excess of revenue	$ 0.9	$ 0.9

Contract with customer liability revenue in excess of billings.

No definition available.

Name:	slb_ContractWithCustomerLiabilityRevenueInExcessOfBillings
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contract with customer liability revenue in excess of billings and cash collections current.

+ References

No definition available.

+ Details

Name:	slb_ContractWithCustomerLiabilityRevenueInExcessOfBillingsAndCashCollectionsCurrent
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of deferred revenue expected to be recognized within one year.

+ References

No definition available.

+ Details

Name:	slb_PercentageOfDeferredRevenueExpectedToBeRecognizedWithinOneYear
Namespace Prefix:	slb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Period Type:	duration