Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total segment sales	$ 8,457	$ 7,584	$ 16,668	$ 14,827
Total operating profit	589	1,142	2,069	2,355
Russia-Ukraine conflict and other charges (Note 2)	(993)	(204)	(989)	(196)
Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	8,457	7,584	16,668	14,827
Total operating profit	1,988	1,837	3,893	3,525
Segment Reconciling Items
Segment Reporting Information [Line Items]
Russia-Ukraine conflict and other charges (Note 2)	(993)	(204)	(989)	(196)
Purchase accounting impacts - Linde AG	(406)	(491)	(835)	(974)
Americas
Segment Reporting Information [Line Items]
Total segment sales	3,518	3,020	6,759	5,860
Americas | Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	3,518	3,020	6,759	5,860
Total operating profit	910	871	1,814	1,666
Russia-Ukraine conflict and other charges (Note 2)	(3)		(3)
EMEA
Segment Reporting Information [Line Items]
Total segment sales	2,144	1,875	4,292	3,674
EMEA | Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	2,144	1,875	4,292	3,674
Total operating profit	536	487	1,039	938
Russia-Ukraine conflict and other charges (Note 2)	(784)		(784)
APAC
Segment Reporting Information [Line Items]
Total segment sales	1,651	1,544	3,253	2,980
APAC | Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	1,651	1,544	3,253	2,980
Total operating profit	426	389	825	740
Russia-Ukraine conflict and other charges (Note 2)	(28)		(24)
Engineering
Segment Reporting Information [Line Items]
Total segment sales	644	646	1,372	1,320
Engineering | Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	644	646	1,372	1,320
Total operating profit	105	108	248	217
Russia-Ukraine conflict and other charges (Note 2)	(166)		(166)
Engineering | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total segment sales	(246)	(234)	(477)	(423)
Other
Segment Reporting Information [Line Items]
Total segment sales	500	499	992	993
Other | Operating Segments
Segment Reporting Information [Line Items]
Total segment sales	500	499	992	993
Total operating profit	11	$ (18)	(33)	$ (36)
Russia-Ukraine conflict and other charges (Note 2)	$ (12)		$ (12)