Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenues	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 28,341	$ 25,146	$ 24,258	$ 23,382	$ 76,559	$ 101,127	$ 94,005
Earnings from operations	(2,204)	1,259	(3,380)	2,350	4,175	2,227	2,710	2,875	(1,975)	11,987	10,344
Other income, net									438	92	123
Interest and debt expense									(722)	(475)	(360)
(Loss)/earnings before income taxes									(2,259)	11,604	10,107
Income tax benefit/(expense)									1,623	(1,144)	(1,649)
Net (loss)/earnings	$ (1,010)	$ 1,167	$ (2,942)	$ 2,149	$ 3,424	$ 2,363	$ 2,196	$ 2,477	(636)	10,460	8,458
Operating Segments
Segment Reporting Information [Line Items]
Earnings from operations									(1,324)	12,102	10,033
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Revenues									32,255	57,499	54,612
Earnings from operations									(6,657)	7,830	5,285
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Revenues									26,227	26,392	23,938
Earnings from operations									2,608	1,657	2,383
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Revenues									18,468	17,056	14,611
Earnings from operations									2,697	2,536	2,251
Operating Segments | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Revenues									244	274	307
Earnings from operations									28	79	114
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Revenues									(635)	(94)	537
Operating Income (Loss) Excluding Unallocated Pension and Postretirement Adjustments									2,066	1,442	1,127
FAS/CAS Service Cost Adjustment									$ (1,415)	$ (1,327)	$ (1,438)