Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 40,216	$ 41,323	$ 41,082	$ 41,374
Net income	1,700	1,612	3,365	3,164
Other comprehensive income (loss)	(276)	(112)	(1,014)	(142)
Noncontrolling interests:
Additions (reductions)	0	(18)	11	(16)
Dividends and other capital changes	(55)	(36)	(64)	(65)
Dividends to Linde plc ordinary share holders	(665)	(623)	(1,334)	(1,246)
Issuances of ordinary shares:
For employee savings and incentive plans	(15)	(35)	(141)	(98)
Purchases of ordinary shares	(1,407)	(912)	(2,445)	(1,802)
Share-based compensation	40	36	78	66
Balance, end of period	$ 39,538	$ 41,235	$ 39,538	$ 41,235
Dividends paid (in dollars per share)	$ 1.39	$ 1.275	$ 2.78	$ 2.55
Linde plc Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 38,829	$ 39,970	$ 39,720	$ 40,028
Net income	1,663	1,575	3,290	3,091
Other comprehensive income (loss)	(266)	(89)	(989)	(117)
Noncontrolling interests:
Additions (reductions)	0	(11)	0	(11)
Dividends and other capital changes	0	0	0	0
Dividends to Linde plc ordinary share holders	(665)	(623)	(1,334)	(1,246)
Issuances of ordinary shares:
For employee savings and incentive plans	(15)	(35)	(141)	(98)
Purchases of ordinary shares	(1,407)	(912)	(2,445)	(1,802)
Share-based compensation	40	36	78	66
Balance, end of period	38,179	39,911	38,179	39,911
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	1,387	1,353	1,362	1,346
Net income	37	37	75	73
Other comprehensive income (loss)	(10)	(23)	(25)	(25)
Noncontrolling interests:
Additions (reductions)	0	(7)	11	(5)
Dividends and other capital changes	(55)	(36)	(64)	(65)
Dividends to Linde plc ordinary share holders	0	0	0	0
Issuances of ordinary shares:
For employee savings and incentive plans	0	0	0	0
Purchases of ordinary shares	0	0	0	0
Share-based compensation	0	0	0	0
Balance, end of period	$ 1,359	$ 1,324	$ 1,359	$ 1,324