Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 41,323	$ 44,377	$ 41,374	$ 45,428
Net income	1,612	410	3,164	1,620
Other comprehensive income (loss)	(112)	(1,545)	(142)	(1,447)
Noncontrolling interests:
Additions (reductions)	(18)	(53)	(16)	(49)
Dividends and other capital changes	(36)	(29)	(65)	(36)
Dividends to Linde plc ordinary share holders	(623)	(585)	(1,246)	(1,177)
Issuances of ordinary shares:
For employee savings and incentive plans	(35)	7	(98)	(39)
Purchases of ordinary shares	(912)	(1,572)	(1,802)	(3,324)
Share-based compensation	36	17	66	51
Balance, end of period	$ 41,235	$ 41,027	$ 41,235	$ 41,027
Dividends paid (in dollars per share)	$ 1.275	$ 1.17	$ 2.55	$ 2.34
Linde plc Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 39,970	$ 42,963	$ 40,028	$ 44,035
Net income	1,575	372	3,091	1,546
Other comprehensive income (loss)	(89)	(1,528)	(117)	(1,418)
Noncontrolling interests:
Additions (reductions)	(11)	0	(11)	0
Dividends and other capital changes	0	0	0	0
Dividends to Linde plc ordinary share holders	(623)	(585)	(1,246)	(1,177)
Issuances of ordinary shares:
For employee savings and incentive plans	(35)	7	(98)	(39)
Purchases of ordinary shares	(912)	(1,572)	(1,802)	(3,324)
Share-based compensation	36	17	66	51
Balance, end of period	39,911	39,674	39,911	39,674
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	1,353	1,414	1,346	1,393
Net income	37	38	73	74
Other comprehensive income (loss)	(23)	(17)	(25)	(29)
Noncontrolling interests:
Additions (reductions)	(7)	(53)	(5)	(49)
Dividends and other capital changes	(36)	(29)	(65)	(36)
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	$ 1,324	$ 1,353	$ 1,324	$ 1,353