Revenue Recognition - Schedule of Revenue by Distribution Method (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Sales	$ 8,100	$ 8,193
Americas
Disaggregation of Revenue [Line Items]
Sales	3,560	3,551
EMEA
Disaggregation of Revenue [Line Items]
Sales	2,091	2,177
APAC
Disaggregation of Revenue [Line Items]
Sales	1,591	1,598
Engineering
Disaggregation of Revenue [Line Items]
Sales	539	540
Other
Disaggregation of Revenue [Line Items]
Sales	319	327
Merchant
Disaggregation of Revenue [Line Items]
Sales	2,387	2,348
Merchant | Americas
Disaggregation of Revenue [Line Items]
Sales	1,117	1,043
Merchant | EMEA
Disaggregation of Revenue [Line Items]
Sales	686	699
Merchant | APAC
Disaggregation of Revenue [Line Items]
Sales	529	551
Merchant | Engineering
Disaggregation of Revenue [Line Items]
Sales	0	0
Merchant | Other
Disaggregation of Revenue [Line Items]
Sales	55	55
On-Site
Disaggregation of Revenue [Line Items]
Sales	1,891	1,985
On-Site | Americas
Disaggregation of Revenue [Line Items]
Sales	782	804
On-Site | EMEA
Disaggregation of Revenue [Line Items]
Sales	441	538
On-Site | APAC
Disaggregation of Revenue [Line Items]
Sales	668	643
On-Site | Engineering
Disaggregation of Revenue [Line Items]
Sales	0	0
On-Site | Other
Disaggregation of Revenue [Line Items]
Sales	0	0
Packaged Gas
Disaggregation of Revenue [Line Items]
Sales	2,887	2,940
Packaged Gas | Americas
Disaggregation of Revenue [Line Items]
Sales	1,607	1,638
Packaged Gas | EMEA
Disaggregation of Revenue [Line Items]
Sales	951	928
Packaged Gas | APAC
Disaggregation of Revenue [Line Items]
Sales	322	354
Packaged Gas | Engineering
Disaggregation of Revenue [Line Items]
Sales	0	0
Packaged Gas | Other
Disaggregation of Revenue [Line Items]
Sales	7	20
Other
Disaggregation of Revenue [Line Items]
Sales	935	920
Other | Americas
Disaggregation of Revenue [Line Items]
Sales	54	66
Other | EMEA
Disaggregation of Revenue [Line Items]
Sales	13	12
Other | APAC
Disaggregation of Revenue [Line Items]
Sales	72	50
Other | Engineering
Disaggregation of Revenue [Line Items]
Sales	539	540
Other | Other
Disaggregation of Revenue [Line Items]
Sales	$ 257	$ 252
Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%
Revenue from Contract with Customer | Sales Channel | Merchant
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	29.00%	29.00%
Revenue from Contract with Customer | Sales Channel | On-Site
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	23.00%	24.00%
Revenue from Contract with Customer | Sales Channel | Packaged Gas
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	36.00%	36.00%
Revenue from Contract with Customer | Sales Channel | Other
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	12.00%	11.00%