Liabilities, Commitments And Contingencies (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities [Line Items]
Accrued compensation and employee benefit costs	$ 5,582		$ 6,841
Accrued Liability 737 MAX	7,389
Environmental	570		555	$ 524
Product warranties	1,267		1,127	$ 1,211
Forward loss recognition	1,681		1,488
Dividends payable	1,159		1,160
Income taxes payable	670		485
Other	4,550		3,152
Total	$ 22,868		$ 14,808
B-737-Max [Member]
Accrued Liabilities [Line Items]
Accrued Liability 737 MAX		$ 6,110