Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 28,341	$ 25,146	$ 24,258	$ 23,382	$ 24,770	$ 24,223	$ 23,051	$ 21,961	$ 101,127	$ 94,005	$ 93,496
Earnings from operations	4,175	2,227	2,710	2,875	2,978	2,630	2,530	2,206	11,987	10,344	6,527
Other income/(loss), net									92	123	(438)
Interest and debt expense									(475)	(360)	(306)
Earnings before income taxes									11,604	10,107	5,783
Income tax expense									(1,144)	(1,649)	(749)
Net earnings	$ 3,424	$ 2,363	$ 2,196	$ 2,477	$ 3,320	$ 1,810	$ 1,749	$ 1,579	10,460	8,458	5,034
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations									12,074	10,005	5,877
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Revenues									60,715	58,014	59,378
Earnings from operations									7,879	5,452	1,981
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Revenues									23,195	20,561	20,180
Earnings from operations									1,594	2,193	1,678
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Revenues									17,018	14,581	13,819
Earnings from operations									2,522	2,246	2,159
Operating Segments [Member] | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Revenues									274	307	298
Earnings from operations									79	114	59
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues									(75)	542	(179)
Operating Income (Loss) Excluding Unallocated Pension and Postretirement Adjustments									1,414	1,099	707
FAS/CAS Service Cost Adjustment									$ (1,327)	$ (1,438)	$ (1,357)