Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
Entity Addresses [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38730
Entity Registrant Name	LINDE PLC
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-1448883
Entity Address, Address Line One	The Priestley Centre
Entity Address, Address Line Two	10 Priestly Road
Entity Address, Address Line Three	Surrey Research Park
Entity Address, City or Town	Guilford
Entity Address, Country	GB
Entity Address, Postal Zip Code	GU2 7XY
Country Region	44
City Area Code	14
Local Phone Number	83 242200
Title of 12(b) Security	Ordinary shares (€0.001 nominal value per share)
Trading Symbol	LIN
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
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 Public Float			$ 149
Entity Common Stock, Shares Outstanding		507,744,577
Documents Incorporated by Reference	Portions of the Proxy Statement of Linde plc for its 2022 Annual General Meeting of Shareholders, are incorporated in Part III of this report.
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0001707925
Other Address
Entity Addresses [Line Items]
Entity Address, Address Line One	10 Riverview Drive,
Entity Address, City or Town	Danbury
Entity Address, State or Province	CT
Entity Address, Country	US
Entity Address, Postal Zip Code	06810