Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 15,751	$ 24,258	$ 38,668	$ 47,640
(Loss)/earnings from operations	(3,380)	2,710	(1,030)	5,585
Other income/(loss), net	107	(15)	213	51
Interest and debt expense	(154)	(109)	(277)	(211)
(Loss)/earnings before income taxes	(3,427)	2,586	(1,094)	5,425
Income tax benefit/(expense)	485	(390)	301	(752)
Net (loss)/earnings	(2,942)	2,196	(793)	4,673
Operating Segments [Member]
Segment Reporting Information [Line Items]
(Loss)/earnings from operations	(3,247)	2,789	(554)	5,625
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Revenues	4,722	13,952	16,544	26,897
(Loss)/earnings from operations	(4,946)	1,785	(3,773)	3,197
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Revenues	6,612	6,100	13,223	12,581
(Loss)/earnings from operations	975	376	1,822	1,133
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Revenues	4,543	4,097	9,162	8,047
(Loss)/earnings from operations	687	604	1,340	1,251
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Revenues	75	72	141	137
(Loss)/earnings from operations	37	24	57	44
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	(201)	37	(402)	(22)
Unallocated items, eliminations and other	(498)	(396)	(1,205)	(722)
FAS/CAS service cost adjustment	$ 365	$ 317	$ 729	$ 682