Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 19,980	$ 25,146	$ 58,648	$ 72,786
Earnings from operations	1,259	2,227	229	7,812
Other income	121	12	334	63
Interest and debt expense	(203)	(106)	(480)	(317)
(Loss)/earnings before income taxes	1,177	2,133	83	7,558
Income tax benefit/(expense)	(10)	230	291	(522)
Net earnings	1,167	2,363	374	7,036
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations	1,417	2,361	863	7,986
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Revenues	8,249	14,071	24,793	40,968
Earnings from operations	(40)	2,033	(3,813)	5,230
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Revenues	7,042	6,937	20,265	19,518
Earnings from operations	755	(247)	2,577	886
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Revenues	4,658	4,101	13,820	12,148
Earnings from operations	673	548	2,013	1,799
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Revenues	66	77	207	214
Earnings from operations	29	27	86	71
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	(35)	(40)	(437)	(62)
Unallocated items, eliminations and other	(522)	(471)	(1,727)	(1,193)
FAS/CAS service cost adjustment	$ 364	$ 337	$ 1,093	$ 1,019