Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total sales	$ 8,267	$ 8,204	$ 16,367	$ 16,397
Total operating profit	2,184	2,011	4,279	3,944
Other charges	0	(22)	0	(40)
Operating Segments
Segment Reporting Information [Line Items]
Total operating profit	2,422	2,286	4,763	4,492
Segment Reconciling Items
Segment Reporting Information [Line Items]
Other charges	0	(22)	0	(40)
Purchase accounting impacts - Linde AG	(238)	(253)	(484)	(508)
Americas
Segment Reporting Information [Line Items]
Total sales	3,655	3,541	7,215	7,092
Americas | Operating Segments
Segment Reporting Information [Line Items]
Total sales	3,655	3,541	7,215	7,092
Total operating profit	1,159	1,070	2,247	2,095
EMEA
Segment Reporting Information [Line Items]
Total sales	2,091	2,160	4,182	4,337
EMEA | Operating Segments
Segment Reporting Information [Line Items]
Total sales	2,091	2,160	4,182	4,337
Total operating profit	704	630	1,391	1,237
APAC
Segment Reporting Information [Line Items]
Total sales	1,657	1,683	3,248	3,281
APAC | Operating Segments
Segment Reporting Information [Line Items]
Total sales	1,657	1,683	3,248	3,281
Total operating profit	474	472	921	895
Engineering
Segment Reporting Information [Line Items]
Total sales	544	495	1,083	1,035
Engineering | Operating Segments
Segment Reporting Information [Line Items]
Total sales	544	495	1,083	1,035
Total operating profit	96	107	196	256
Engineering | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total sales	485	335	876	629
Other
Segment Reporting Information [Line Items]
Total sales	320	325	639	652
Other | Operating Segments
Segment Reporting Information [Line Items]
Total sales	320	325	639	652
Total operating profit	(11)	7	8	9
Total sales | Operating Segments
Segment Reporting Information [Line Items]
Total sales	$ 8,267	$ 8,204	$ 16,367	$ 16,397