Commitments and Contingencies Commitments and Contingencies (Schedule of 737 Max LIability) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 6,000
B-737
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	5,981	$ 7,389
Payments made to customers	(1,695)
Concessions and other in-kind consideration to customers	(83)
Accrual for 737 MAX customer concessions and other considerations liability	$ 370