Commitments and Contingencies Commitments and Contingencies (Schedule of 737 Max Liability) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 2,400
KC-46A Tanker
Commitments And Contingencies [Line Items]
Contract Value	19,000
B-737
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	2,419	$ 4,370	$ 2,940	$ 5,537
Payments made to customers	(550)	(1,172)
Concessions and other in-kind consideration to customers	(5)	(25)
Accrual for 737 MAX customer concessions and other considerations liability	$ 34	$ 30