Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	SCHLUMBERGER LIMITED/NV
Entity Central Index Key	0000087347
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,392,325,960
Entity Public Float		$ 25,500
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SLB
Security Exchange Name	NYSE
Entity File Number	1-4601
Entity Incorporation, State or Country Code	P8
Entity Tax Identification Number	52-0684746
Entity Address, Address Line One	5599 San Felipe
Entity Address, Address Line Two	17th Floor
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Country	US
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	513-2000
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Certain information required to be furnished pursuant to Part III of this Form 10-K is set forth in, and is incorporated by reference from, Schlumberger’s definitive proxy statement for its 2021 Annual General Meeting of Stockholders, to be filed by Schlumberger with the Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A within 120 days after December 31, 2020 (the “2021 Proxy Statement”).