Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenues	$ 11,807	$ 15,751	$ 28,715	$ 38,668
Loss from operations	(2,964)	(3,380)	(4,317)	(1,030)
Other income, net	94	107	206	213
Interest and debt expense	(553)	(154)	(815)	(277)
(Loss)/earnings before income taxes	(3,423)	(3,427)	(4,926)	(1,094)
Income tax benefit	1,028	485	1,890	301
Net loss	(2,395)	(2,942)	(3,036)	(793)
Less: net loss attributable to noncontrolling interest	(19)		(32)
Net (loss)/earnings attributable to Boeing Shareholders	(2,376)	(2,942)	(3,004)	(793)
Operating Segments
Segment Reporting Information [Line Items]
Loss from operations	(2,841)	(3,247)	(4,368)	(549)
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Revenues	1,633	4,722	7,838	16,544
Loss from operations	(2,762)	(4,946)	(4,830)	(3,773)
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Revenues	6,588	6,579	12,630	13,166
Loss from operations	600	975	409	1,827
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Revenues	3,488	4,543	8,116	9,162
Loss from operations	(672)	687	36	1,340
Operating Segments | Boeing Capital
Segment Reporting Information [Line Items]
Revenues	69	75	134	141
Loss from operations	(7)	37	17	57
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Revenues	29	(168)	(3)	(345)
Unallocated items, eliminations and other	(478)	(498)	(651)	(1,210)
FAS/CAS service cost adjustment	$ 355	$ 365	$ 702	$ 729