Commitments And Contingencies Commitments and Contingencies (Schedule of 737 Max LIability) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Commitments And Contingencies [Line Items]
737 MAX customer concessions and other considerations liability	$ 6,686	$ 7,389
B-737-Max
Commitments And Contingencies [Line Items]
Payments made to customers	(671)
B-737-Max
Commitments And Contingencies [Line Items]
Concessions and other in-kind consideration to customers	(2)
Accrual for 737 MAX customer concessions and other considerations liability	$ (30)