Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total sales	$ 8,100	$ 8,193
Total operating profit	2,095	1,933
Other charges	0	(18)
Operating Segments
Segment Reporting Information [Line Items]
Total sales	8,100	8,193
Total operating profit	2,341	2,206
Segment Reconciling Items
Segment Reporting Information [Line Items]
Other charges	0	(18)
Purchase accounting impacts - Linde AG	(246)	(255)
Americas
Segment Reporting Information [Line Items]
Total sales	3,560	3,551
Americas | Operating Segments
Segment Reporting Information [Line Items]
Total sales	3,560	3,551
Total operating profit	1,088	1,025
EMEA
Segment Reporting Information [Line Items]
Total sales	2,091	2,177
EMEA | Operating Segments
Segment Reporting Information [Line Items]
Total sales	2,091	2,177
Total operating profit	687	607
APAC
Segment Reporting Information [Line Items]
Total sales	1,591	1,598
APAC | Operating Segments
Segment Reporting Information [Line Items]
Total sales	1,591	1,598
Total operating profit	447	423
Engineering
Segment Reporting Information [Line Items]
Total sales	539	540
Engineering | Operating Segments
Segment Reporting Information [Line Items]
Total sales	539	540
Total operating profit	100	149
Engineering | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total sales	391	294
Other
Segment Reporting Information [Line Items]
Total sales	319	327
Other | Operating Segments
Segment Reporting Information [Line Items]
Total sales	319	327
Total operating profit	$ 19	$ 2