Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite-lived Intangible Assets [Roll Forward]
Beginning Period Cost	$ 18,368	$ 17,581
Foreign currency translation	(672)
Disposals (Note 2)	(1,225)
Other	(371)	(65)
Ending Period Cost	16,173	18,368	$ 17,581
Beginning Accumulated Amortization	(2,184)	(1,444)
Amortization expense (Note 7)	(723)	(765)	(735)
Foreign currency translation	89	(55)
Disposals (Note 2)	80	21
Other	367	59
Ending Accumulated Amortization	(2,371)	(2,184)	(1,444)
Net intangible assets	$ 13,802	16,184
Remaining weighted-average amortization period for intangible asset	24 years
Additional Finite Lived Intangible Asset Information (Details) [Abstract]
2022	$ 615
2023	579
2024	571
2025	530
2026	511
Thereafter	9,183
Total amortization related to finite-lived intangible assets	11,989
Indefinite-lived intangible assets	1,813
Net intangible assets	13,802	16,184
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning Period Cost	13,776	13,205
Foreign currency translation	(490)
Disposals (Note 2)	(1,085)
Other	(354)	(64)
Ending Period Cost	11,859	13,776	13,205
Beginning Accumulated Amortization	(1,470)	(885)
Amortization expense (Note 7)	(553)	(589)
Foreign currency translation	64	(53)
Disposals (Note 2)	66	1
Other	352	56
Ending Accumulated Amortization	(1,541)	(1,470)	(885)
Net intangible assets	10,318	12,306
Additional Finite Lived Intangible Asset Information (Details) [Abstract]
Net intangible assets	10,318	12,306
Brands/Tradenames
Finite-lived Intangible Assets [Roll Forward]
Beginning Period Cost	2,895	2,764
Foreign currency translation	(113)
Disposals (Note 2)	(94)
Other	(3)	(3)
Ending Period Cost	2,685	2,895	2,764
Beginning Accumulated Amortization	(118)	(69)
Amortization expense (Note 7)	(45)	(45)
Foreign currency translation	3	(3)
Disposals (Note 2)	1	0
Other	0	(1)
Ending Accumulated Amortization	(159)	(118)	(69)
Net intangible assets	2,526	2,777
Additional Finite Lived Intangible Asset Information (Details) [Abstract]
Net intangible assets	2,526	2,777
Other Intangible Assets
Finite-lived Intangible Assets [Roll Forward]
Beginning Period Cost	1,697	1,612
Foreign currency translation	(69)
Disposals (Note 2)	(46)
Other	(14)	2
Ending Period Cost	1,629	1,697	1,612
Beginning Accumulated Amortization	(596)	(490)
Amortization expense (Note 7)	(125)	(131)
Foreign currency translation	22	1
Disposals (Note 2)	13	20
Other	15	4
Ending Accumulated Amortization	(671)	(596)	$ (490)
Net intangible assets	958	1,101
Additional Finite Lived Intangible Asset Information (Details) [Abstract]
Net intangible assets	958	1,101
Linde AG
Finite-lived Intangible Assets [Roll Forward]
Additions	73	61
Foreign currency translation		813
Disposals (Note 2)		(22)
Amortization expense (Note 7)	(618)	(653)
Linde AG | Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Additions	12	5
Foreign currency translation		632
Disposals (Note 2)		(2)
Linde AG | Brands/Tradenames
Finite-lived Intangible Assets [Roll Forward]
Additions	0	0
Foreign currency translation		134
Disposals (Note 2)		0
Linde AG | Other Intangible Assets
Finite-lived Intangible Assets [Roll Forward]
Additions	$ 61	56
Foreign currency translation		47
Disposals (Note 2)		$ (20)