Revenue Recognition - Schedule of Revenue by Distribution Method (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total segment sales	$ 8,193	$ 8,211
Americas
Disaggregation of Revenue [Line Items]
Total segment sales	3,551	3,241
EMEA
Disaggregation of Revenue [Line Items]
Total segment sales	2,177	2,148
APAC
Disaggregation of Revenue [Line Items]
Total segment sales	1,598	1,602
Engineering
Disaggregation of Revenue [Line Items]
Total segment sales	540	728
Other
Disaggregation of Revenue [Line Items]
Total segment sales	327	492
Merchant
Disaggregation of Revenue [Line Items]
Total segment sales	2,348	2,043
Merchant | Americas
Disaggregation of Revenue [Line Items]
Total segment sales	1,043	874
Merchant | EMEA
Disaggregation of Revenue [Line Items]
Total segment sales	699	614
Merchant | APAC
Disaggregation of Revenue [Line Items]
Total segment sales	551	516
Merchant | Engineering
Disaggregation of Revenue [Line Items]
Total segment sales	0	0
Merchant | Other
Disaggregation of Revenue [Line Items]
Total segment sales	55	39
On-Site
Disaggregation of Revenue [Line Items]
Total segment sales	1,985	2,169
On-Site | Americas
Disaggregation of Revenue [Line Items]
Total segment sales	804	883
On-Site | EMEA
Disaggregation of Revenue [Line Items]
Total segment sales	538	631
On-Site | APAC
Disaggregation of Revenue [Line Items]
Total segment sales	643	655
On-Site | Engineering
Disaggregation of Revenue [Line Items]
Total segment sales	0	0
On-Site | Other
Disaggregation of Revenue [Line Items]
Total segment sales	0	0
Packaged Gas
Disaggregation of Revenue [Line Items]
Total segment sales	2,940	2,691
Packaged Gas | Americas
Disaggregation of Revenue [Line Items]
Total segment sales	1,638	1,432
Packaged Gas | EMEA
Disaggregation of Revenue [Line Items]
Total segment sales	928	891
Packaged Gas | APAC
Disaggregation of Revenue [Line Items]
Total segment sales	354	361
Packaged Gas | Engineering
Disaggregation of Revenue [Line Items]
Total segment sales	0	0
Packaged Gas | Other
Disaggregation of Revenue [Line Items]
Total segment sales	20	7
Other
Disaggregation of Revenue [Line Items]
Total segment sales	920	1,308
Other | Americas
Disaggregation of Revenue [Line Items]
Total segment sales	66	52
Other | EMEA
Disaggregation of Revenue [Line Items]
Total segment sales	12	12
Other | APAC
Disaggregation of Revenue [Line Items]
Total segment sales	50	70
Other | Engineering
Disaggregation of Revenue [Line Items]
Total segment sales	540	728
Other | Other
Disaggregation of Revenue [Line Items]
Total segment sales	$ 252	$ 446
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%	25.00%
Revenue from Contract with Customer | Sales Channel | On-Site
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	24.00%	26.00%
Revenue from Contract with Customer | Sales Channel | Packaged Gas
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	36.00%	33.00%
Revenue from Contract with Customer | Sales Channel | Other
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	11.00%	16.00%