Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Product Warranty Liability [Line Items]
Balance as of January 1	$ 1,157	$ 1,057
Warranties and performance guarantees issued	71	113
Settlements made	(74)	(69)
Other	0	(1)
Balance as of March 31	1,154	$ 1,100
Commercial Aerospace Financing Arrangements
Product Warranty Liability [Line Items]
Maximum Potential Payment	304		$ 309
Carrying Amount of Liability	0		3
Third Party Guarantees
Product Warranty Liability [Line Items]
Maximum Potential Payment	503		511
Carrying Amount of Liability	4		5
Commercial Aerospace [Member]
Product Warranty Liability [Line Items]
Partner Share of Guarantor Obligations, Maximum Exposure, Undiscounted	140		141
Guarantee Type, Other
Product Warranty Liability [Line Items]
Carrying Amount of Liability	$ 118		$ 120