Summary Of Business Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 25,146	$ 24,223	$ 72,786	$ 69,235
Earnings from operations	2,227	2,630	7,812	7,366
Other income, net	12	40	63	91
Interest and debt expense	(106)	(87)	(317)	(267)
Earnings before income taxes	2,133	2,583	7,558	7,190
Income tax (expense)/benefit	230	(773)	(522)	(2,052)
Net earnings	2,363	1,810	7,036	5,138
Operating Segments [Member]
Segment Reporting Information [Line Items]
Earnings from operations	2,348	2,517	7,961	7,088
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Revenues	15,276	15,393	43,409	42,626
Earnings from operations	2,023	1,513	5,175	3,665
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Revenues	5,729	5,050	17,084	15,304
Earnings from operations	(245)	486	925	1,649
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Revenues	4,091	3,579	12,124	10,784
Earnings from operations	543	495	1,790	1,687
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Revenues	77	70	214	234
Earnings from operations	27	23	71	87
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	(27)	131	(45)	287
Unallocated items, eliminations and other	(458)	(233)	(1,168)	(771)
FAS/CAS service cost adjustment	$ 337	$ 346	$ 1,019	$ 1,049