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Property (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 72,401	$ 65,455
Less: accumulated depreciation	(31,286)	(27,823)
Total property, net	41,115	37,632
Depreciation, Amortization and Impairment [Abstract]
Depreciation and amortization expense	12,047	12,676	$ 14,060
Property, Plant and Equipment
Capitalized Interest and Software [Abstract]
Capitalized software	1,400	1,300
Depreciation, Amortization and Impairment [Abstract]
Depreciation and amortization expense	5,829	5,354	6,541
Impairment charges	0	86	7
Capitalized software amortization expense	515	457	$ 452
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	1,301	1,339
Buildings and Improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 10,542	9,671
Buildings and Improvements | Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	5 years
Buildings and Improvements | Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	40 years
Machinery and Equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 31,444	30,013
Machinery and Equipment | Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	3 years
Machinery and Equipment | Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	27 years
Special Tools
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 23,719	20,851
Special Tools | Minimum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	1 year
Special Tools | Maximum
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated Useful Life in Years	13 years
Construction in Progress
Property, Plant and Equipment, Net, by Type [Abstract]
Total property	$ 5,395	$ 3,581

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense for amortization of capitalized computer software costs.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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