Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 16,908	$ 22,917
(Loss)/earnings from operations	(1,353)	2,350
Other income, net	112	106
Interest and debt expense	(262)	(123)
(Loss)/earnings before income taxes	(1,503)	2,333
Income tax benefit/(expense)	862	(184)
Net (loss)/earnings	(641)	2,149
Less: net loss attributable to noncontrolling interest	(13)
Net (loss)/earnings attributable to Boeing Shareholders	(628)	2,149
Operating Segments
Segment Reporting Information [Line Items]
(Loss)/earnings from operations	(1,527)	2,698
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Revenues	6,205	11,822
(Loss)/earnings from operations	(2,068)	1,173
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Revenues	6,042	6,587
(Loss)/earnings from operations	(191)	852
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Revenues	4,628	4,619
(Loss)/earnings from operations	708	653
Operating Segments | Boeing Capital
Segment Reporting Information [Line Items]
Revenues	65	66
(Loss)/earnings from operations	24	20
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Revenues	(32)	(177)
Unallocated items, eliminations and other	(173)	(712)
FAS/CAS service cost adjustment	$ 347	$ 364