Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 41,082	$ 41,374
Net income	1,665	1,552
Other comprehensive income (loss)	(738)	(30)
Noncontrolling interests:
Additions (reductions)	11	2
Dividends and other capital changes	(9)	(29)
Dividends to Linde plc ordinary share holders	(669)	(623)
Issuances of ordinary shares:
For employee savings and incentive plans	(126)	(63)
Purchases of ordinary shares	(1,038)	(890)
Share-based compensation	38	30
Balance, end of period	$ 40,216	$ 41,323
Dividends paid (in dollars per share)	$ 1.39	$ 1.275
Linde plc Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 39,720	$ 40,028
Net income	1,627	1,516
Other comprehensive income (loss)	(723)	(28)
Noncontrolling interests:
Additions (reductions)	0	0
Dividends and other capital changes	0	0
Dividends to Linde plc ordinary share holders	(669)	(623)
Issuances of ordinary shares:
For employee savings and incentive plans	(126)	(63)
Purchases of ordinary shares	(1,038)	(890)
Share-based compensation	38	30
Balance, end of period	38,829	39,970
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	1,362	1,346
Net income	38	36
Other comprehensive income (loss)	(15)	(2)
Noncontrolling interests:
Additions (reductions)	11	2
Dividends and other capital changes	(9)	(29)
Dividends to Linde plc ordinary share holders	0	0
Issuances of ordinary shares:
For employee savings and incentive plans	0	0
Purchases of ordinary shares	0
Share-based compensation	0	0
Balance, end of period	$ 1,387	$ 1,353