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Revenue Recognition - Schedule of Revenue by Distribution Method (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Sales	$ 8,112	$ 8,100
Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%
Americas
Disaggregation of Revenue [Line Items]
Sales	$ 3,666	$ 3,560
EMEA
Disaggregation of Revenue [Line Items]
Sales	2,031	2,091
APAC
Disaggregation of Revenue [Line Items]
Sales	1,539	1,591
Engineering
Disaggregation of Revenue [Line Items]
Sales	565	539
Other
Disaggregation of Revenue [Line Items]
Sales	311	319
Merchant
Disaggregation of Revenue [Line Items]
Sales	$ 2,377	$ 2,387
Merchant | Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	29.00%	29.00%
Merchant | Americas
Disaggregation of Revenue [Line Items]
Sales	$ 1,150	$ 1,117
Merchant | EMEA
Disaggregation of Revenue [Line Items]
Sales	671	686
Merchant | APAC
Disaggregation of Revenue [Line Items]
Sales	509	529
Merchant | Engineering
Disaggregation of Revenue [Line Items]
Sales	0	0
Merchant | Other
Disaggregation of Revenue [Line Items]
Sales	47	55
On-Site
Disaggregation of Revenue [Line Items]
Sales	$ 1,981	$ 1,891
On-Site | Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	24.00%	23.00%
On-Site | Americas
Disaggregation of Revenue [Line Items]
Sales	$ 888	$ 782
On-Site | EMEA
Disaggregation of Revenue [Line Items]
Sales	426	441
On-Site | APAC
Disaggregation of Revenue [Line Items]
Sales	667	668
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	$ 2,821	$ 2,887
Packaged Gas | Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	35.00%	36.00%
Packaged Gas | Americas
Disaggregation of Revenue [Line Items]
Sales	$ 1,572	$ 1,607
Packaged Gas | EMEA
Disaggregation of Revenue [Line Items]
Sales	926	951
Packaged Gas | APAC
Disaggregation of Revenue [Line Items]
Sales	316	322
Packaged Gas | Engineering
Disaggregation of Revenue [Line Items]
Sales	0	0
Packaged Gas | Other
Disaggregation of Revenue [Line Items]
Sales	7	7
Other
Disaggregation of Revenue [Line Items]
Sales	$ 933	$ 935
Other | Revenue from Contract with Customer | Sales Channel
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	12.00%	12.00%
Other | Americas
Disaggregation of Revenue [Line Items]
Sales	$ 56	$ 54
Other | EMEA
Disaggregation of Revenue [Line Items]
Sales	8	13
Other | APAC
Disaggregation of Revenue [Line Items]
Sales	47	72
Other | Engineering
Disaggregation of Revenue [Line Items]
Sales	565	539
Other | Other
Disaggregation of Revenue [Line Items]
Sales	$ 257	$ 257

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