Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 41,374	$ 45,428
Net income	1,552	1,210
Other comprehensive income (loss)	(30)	98
Noncontrolling interests:
Additions (reductions)	2	4
Dividends and other capital changes	(29)	(7)
Dividends to Linde plc ordinary share holders	(623)	(592)
Issuances of ordinary shares:
For employee savings and incentive plans	(63)	(46)
Purchases of ordinary shares	(890)	(1,752)
Share-based compensation	30	34
Balance, end of period	$ 41,323	$ 44,377
Dividends paid (in dollars per share)	$ 1.275	$ 1.17
Linde plc Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 40,028	$ 44,035
Net income	1,516	1,174
Other comprehensive income (loss)	(28)	110
Noncontrolling interests:
Additions (reductions)	0	0
Dividends and other capital changes	0	0
Dividends to Linde plc ordinary share holders	(623)	(592)
Issuances of ordinary shares:
For employee savings and incentive plans	(63)	(46)
Purchases of ordinary shares	(890)	(1,752)
Share-based compensation	30	34
Balance, end of period	39,970	42,963
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	1,346	1,393
Net income	36	36
Other comprehensive income (loss)	(2)	(12)
Noncontrolling interests:
Additions (reductions)	2	4
Dividends and other capital changes	(29)	(7)
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	0
Share-based compensation	0	0
Balance, end of period	$ 1,353	$ 1,414