Revenue Recognition - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) distribution_method	Dec. 31, 2022 USD ($)
Disaggregation of Revenue [Line Items]
Number of gas distribution methods | distribution_method	3
Contract assets	$ 151	$ 124
Contract liabilities	2,945	3,986
Contract liabilities, current	1,985	3,073
Contract liabilities in other long-term liabilities	960	$ 913
Revenue recognized	760
Estimated consideration related to unsatisfied performance obligations	$ 47,000
Long-term supply contracts (years)	20 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation, percentage	50.00%
Remaining performance obligations, period	5 years
Engineering | Russia | Russia-Ukraine Conflict, International Sanctions
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 498
Minimum
Disaggregation of Revenue [Line Items]
On-site product supply contract (years)	10 years
Minimum | Merchant
Disaggregation of Revenue [Line Items]
Customer supply agreements (years)	3 years
Minimum | Packaged Gas
Disaggregation of Revenue [Line Items]
Customer supply agreements (years)	1 year
Maximum
Disaggregation of Revenue [Line Items]
On-site product supply contract (years)	20 years
Maximum | Merchant
Disaggregation of Revenue [Line Items]
Customer supply agreements (years)	7 years
Maximum | Packaged Gas
Disaggregation of Revenue [Line Items]
Customer supply agreements (years)	3 years