Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 39,538	$ 41,235	$ 41,082	$ 41,374
Net income	1,603	1,601	4,968	4,765
Other comprehensive income (loss)	764	(790)	(250)	(932)
Noncontrolling interests:
Additions (reductions)	(1)	(1)	10	(17)
Dividends and other capital changes	(23)	(19)	(87)	(84)
Dividends to Linde plc ordinary share holders	(662)	(620)	(1,996)	(1,866)
Issuances of ordinary shares:
For employee savings and incentive plans	(1)	(19)	(142)	(117)
Purchases of ordinary shares	(670)	(1,198)	(3,115)	(3,000)
Share-based compensation	42	36	120	102
Balance, end of period	$ 40,590	$ 40,225	$ 40,590	$ 40,225
Dividends paid (in dollars per share)	$ 1.39	$ 1.275	$ 4.17	$ 3.83
Linde plc Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 38,179	$ 39,911	$ 39,720	$ 40,028
Net income	1,550	1,565	4,840	4,656
Other comprehensive income (loss)	735	(777)	(254)	(894)
Noncontrolling interests:
Additions (reductions)	0	0	0	(11)
Dividends and other capital changes	0	0	0	0
Dividends to Linde plc ordinary share holders	(662)	(620)	(1,996)	(1,866)
Issuances of ordinary shares:
For employee savings and incentive plans	(1)	(19)	(142)	(117)
Purchases of ordinary shares	(670)	(1,198)	(3,115)	(3,000)
Share-based compensation	42	36	120	102
Balance, end of period	39,173	38,898	39,173	38,898
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	1,359	1,324	1,362	1,346
Net income	53	36	128	109
Other comprehensive income (loss)	29	(13)	4	(38)
Noncontrolling interests:
Additions (reductions)	(1)	(1)	10	(6)
Dividends and other capital changes	(23)	(19)	(87)	(84)
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	$ 1,417	$ 1,327	$ 1,417	$ 1,327