Name:	slb_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsExpectedToBeRecognizedInYearFive
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year four.

No definition available.

Name:	slb_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsExpectedToBeRecognizedInYearFour
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year one.

No definition available.

Name:	slb_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsExpectedToBeRecognizedInYearOne
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year three.

No definition available.

Name:	slb_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsExpectedToBeRecognizedInYearThree
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Employee service share based compensation unrecognized compensation costs on nonvested awards expected to be recognized in year two.

No definition available.

Name:	slb_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsExpectedToBeRecognizedInYearTwo
Namespace Prefix:	slb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Share based compensation arrangement by share based payment award award vesting periods.

No definition available.

Name:	slb_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriods
Namespace Prefix:	slb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Share based compensation arrangement by share based payment award equity instruments other than options percentage of shares granted.

No definition available.

Name:	slb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfSharesGranted
Namespace Prefix:	slb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Share based compensation arrangement by share based payment award performance period.

No definition available.

Name:	slb_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod
Namespace Prefix:	slb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Share-based compensation arrangement by share-based payments award vesting period.

No definition available.

Name:	slb_ShareBasedCompensationArrangementByShareBasedPaymentsAwardVestingPeriod
Namespace Prefix:	slb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Stock option maximum term.

No definition available.

Name:	slb_StockOptionMaximumTerm
Namespace Prefix:	slb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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.

No definition available.

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

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Purchase price of common stock expressed as a percentage of its fair value.

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementScenarioAxis=slb_ScenarioReturnOnCapitalEmployedExceedsPredefinedTargetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementScenarioAxis=slb_ScenarioReturnOnCapitalEmployedFallsBelowThresholdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: