Net 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]
Net property	$ 37,139	$ 37,083
Depreciation, Depletion and Amortization [Abstract]
Depreciation and other amortization	2,986	2,792	$ 3,449
Tooling amortization	(1,358)	(1,294)	(1,199)
Depreciation, Depletion, and Amortization, Including Impairment	5,692	5,539	6,858
Maintenance and rearrangement	$ 1,940	1,670	1,963
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	14 years 6 months
Software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	8 years
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	$ 4,598	3,900
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	$ 450	451
Land Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	30 years
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Building and Building Improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	$ 12,438	12,557
Other Machinery and Equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	39,636	40,463
Construction in progress
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	2,152	1,718
Total land, plant and equipment, and other
Property, Plant and Equipment, Net, by Type [Abstract]
Gross property	59,274	59,089
Accumulated depreciation	(32,342)	(32,848)
Net property	26,932	26,241
Tools, Dies and Molds
Property, Plant and Equipment, Net, by Type [Abstract]
Net property	10,207	10,842
Depreciation, Depletion and Amortization [Abstract]
Tooling amortization	$ 2,706	$ 2,747	$ 3,409
Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years