Debt instrument amount exchanged.

No definition available.

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

- Definition

Debt instrument exchange, payment of premium.

+ References

No definition available.

+ Details

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

- Definition

Debt instrument maturity.

+ References

No definition available.

+ Details

Name:	slb_DebtInstrumentMaturityYear
Namespace Prefix:	slb_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Long term debt maturities repayments of principal in year eight.

+ References

No definition available.

+ Details

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

- Definition

Long term debt maturities repayments of principal in year nine and thereafter.

+ References

No definition available.

+ Details

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

- Definition

Long term debt maturities repayments of principal in year seven.

+ References

No definition available.

+ Details

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

- Definition

Longterm debt maturities repayments of principal in year six.

+ References

No definition available.

+ Details

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

- Definition

Short term borrowings and long term debt current.

+ References

No definition available.

+ Details

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

- Definition

Weighted average interest rate on variable rate debt.

+ References

No definition available.

+ Details

Name:	slb_WeightedAverageInterestRateOnVariableRateDebt
Namespace Prefix:	slb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
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=118260190&loc=d3e13433-108611

+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
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

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

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
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
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

+ Details

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

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	us-gaap_
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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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

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

- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

+ Details

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

- Details

Name:	srt_OwnershipAxis=slb_SchlumbergerInvestmentSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=slb_CommercialPaperProgramsMaturingFebruaryTwoZeroTwoZeroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=slb_CommercialPaperProgramsMaturingFebruaryTwoZeroTwoThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=slb_CommercialPaperProgramsMaturingJulyTwoZeroTwoFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=slb_CommercialPaperProgramsMaturingFebruaryTwoZeroTwoFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointZeroZeroPercentSeniorNotesDueTwoThousandTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_FourPointFiveZeroPercentNotesDueTwoThousandTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_FourPointTwoZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointSixZeroPercentNotesDueTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ZeroPointZeroZeroPercentNotesDueTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ZeroPointTwoFivePercentNotesDueTwoThousandTwentySevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ZeroPointFiveZeroPercentNotesDueTwoThousandThirtyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointSixTwoFivePercentSeniorNotesDueTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointNineZeroPercentSeniorNotesDueTwoThousandTwentyEightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointSixThreePercentSeniorNotesDueTwoThousandAndTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_FourPointZeroZeroPercentSeniorNotesDueTwoThousandTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_ThreePointSevenFivePercentSeniorNotesDueTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_FourPointThreeZeroPercentSeniorNotesDueTwoThousandTwentyNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=slb_GuaranteedNotesOnePointZeroZeroPercentDueTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-term Debt and Debt Facility Agreements - Additional Information (Detail) € in Millions, $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2019 EUR (€)	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Jun. 30, 2017
Debt Instrument [Line Items]
Debt instrument interest rate											6.50%
Debt instrument premium paid on repurchase	$ 28	$ 29
Debt instrument premium paid			$ 48
Committed credit facility agreement aggregated	6,500					$ 6,500
Unused credit facility	4,300					4,300
Short-term borrowings and current portion of long-term debt	524				$ 1,407	524	$ 1,407
Long-term Debt	$ 14,770				14,644	$ 14,770	14,644
Weighted average interest rate on variable rate debt	2.30%					2.30%
Long-term Debt maturity in 2021	$ 2,300					$ 2,300
Long-term Debt maturity in 2022	1,900					1,900
Long-term Debt maturity in 2023	1,900					1,900
Long-term Debt maturity in 2024	3,200					3,200
Long-term Debt maturity in 2025	900					900
Long-term Debt maturity in 2026	700					700
Long-term Debt maturity thereafter	3,900					3,900
Long-term debt, fair value	15,300				14,600	$ 15,300	14,600
Schlumberger Investment SA
Debt Instrument [Line Items]
Investment in subsidiary						100.00%
Commercial paper programs mature in February 2020
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,000					$ 1,000
Commercial paper programs mature in February 2023
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000					2,000
Commercial paper programs mature in July 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	1,500					1,500
Commercial paper programs mature in February 2024
Debt Instrument [Line Items]
Committed credit facility agreement aggregated	2,000					2,000
Commercial paper borrowings
Debt Instrument [Line Items]
Long-term debt	2,200				2,400	2,200	2,400
Long-term Debt	2,222				2,433	2,222	2,433
Long-term debt, fair value										$ 135
3.00% Senior Notes due 2020
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 416					$ 416
Debt instrument interest rate	3.00%	3.00%	3.00%			3.00%		3.00%
Debt instrument maturity date	2020	2020	2020
Notes, face amount		$ 783
Debt instrument, amount exchanged			$ 401
Long-term Debt					$ 1,596		$ 1,596
4.50% Notes due 2021
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 126					$ 126
Debt instrument interest rate	4.50%				4.50%	4.50%	4.50%		4.50%
Debt instrument maturity date	2021					2021	2021
Long-term Debt					$ 132		$ 132
4.20% Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 500					$ 500
Debt instrument interest rate	4.20%					4.20%
Debt instrument maturity date	2021
3.60% Notes due 2022
Debt Instrument [Line Items]
Debt instrument, repurchase amount	$ 106					$ 106
Debt instrument interest rate	3.60%				3.60%	3.60%	3.60%		3.60%
Debt instrument maturity date	2022					2022	2022
Long-term Debt					$ 109		$ 109
0.00% Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	0.00%	0.00%			0.00%	0.00%	0.00%	0.00%	0.00%
Debt instrument maturity date		2024				2024	2024
Notes, face amount \| €								€ 500
Long-term Debt	$ 551					$ 551
0.25% Notes due 2027
Debt Instrument [Line Items]
Debt instrument interest rate	0.25%	0.25%			0.25%	0.25%	0.25%	0.25%	0.25%
Debt instrument maturity date		2027				2027	2027
Notes, face amount \| €								€ 500
Long-term Debt	$ 550					$ 550
0.50% Notes due 2031
Debt Instrument [Line Items]
Debt instrument interest rate	0.50%	0.50%			0.50%	0.50%	0.50%	0.50%	0.50%
Debt instrument maturity date		2031				2031	2031
Notes, face amount \| €								€ 500
Long-term Debt	$ 544					$ 544
3.625% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate		3.625%						3.625%
Debt instrument maturity date		2022
Notes, face amount		$ 321
3.90% Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument interest rate	3.90%		3.90%		3.90%	3.90%	3.90%		3.90%
Debt instrument maturity date			2028			2028	2028
Notes, face amount			$ 1,500
Long-term Debt	$ 1,444					$ 1,444
3.63% Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument interest rate	3.63%		3.63%		3.63%	3.63%	3.63%		3.63%
Debt instrument maturity date			2022			2022	2022
Debt instrument, amount exchanged			$ 234
Long-term Debt	$ 294				$ 847	$ 294	$ 847
4.00% Senior Notes due 2025
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%		4.00%		4.00%	4.00%	4.00%		4.00%
Debt instrument maturity date			2025			2025	2025
Debt instrument, amount exchanged			$ 817
3.75% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument interest rate	3.75%			3.75%	3.75%	3.75%	3.75%		3.75%
Debt instrument maturity date				2024		2024	2024
Notes, face amount				$ 750
Long-term Debt	$ 746					$ 746
4.30% Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument interest rate	4.30%			4.30%	4.30%	4.30%	4.30%		4.30%
Debt instrument maturity date				2029		2029	2029
Notes, face amount				$ 850
Long-term Debt	$ 845					$ 845
1.00% Guaranteed Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%				1.00%	1.00%	1.00%		1.00%
Debt instrument maturity date					2026	2026	2026
Notes, face amount \| €									€ 600
Long-term Debt	$ 665				$ 678	$ 665	$ 678