Commitments and Contingencies Commitments and Contingencies (Schedule of 737 Max LIability) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability		$ 7,389
B-737-Max
Commitments And Contingencies [Line Items]
Payments made to customers	$ (1,211)
B-737-Max
Commitments And Contingencies [Line Items]
Concessions and other in-kind consideration to customers	(35)
Accrual for 737 MAX customer concessions and other considerations liability	$ 521