Summary of Business Segment Data - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total revenues	$ 17,840	$ 18,104	$ 51,275	$ 55,776
Loss from operations	(5,761)	(808)	(6,937)	(1,056)
Other income, net	265	297	790	919
Interest and debt expense	(728)	(589)	(1,970)	(1,859)
Loss before income taxes	(6,224)	(1,100)	(8,117)	(1,996)
Income tax benefit/(expense)	50	(538)	149	(216)
Net loss	(6,174)	(1,638)	(7,968)	(2,212)
Less: net loss attributable to noncontrolling interest	(4)	(2)	(16)	(13)
Net loss attributable to Boeing Shareholders	(6,170)	(1,636)	(7,952)	(2,199)
Operating Segments
Segment Reporting Information [Line Items]
Loss from operations	(5,571)	(818)	(6,405)	(852)
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Total revenues	7,443	7,876	18,099	23,420
Loss from operations	(4,021)	(678)	(5,879)	(1,676)
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Total revenues	5,536	5,481	18,507	18,187
Loss from operations	(2,384)	(924)	(3,146)	(1,663)
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Total revenues	4,901	4,812	14,835	14,278
Loss from operations	834	784	2,620	2,487
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Total revenues	(40)	(65)	(166)	(109)
Unallocated items, eliminations and other	(418)	(271)	(1,364)	(1,067)
FAS/CAS service cost adjustment	$ 228	$ 281	$ 832	$ 863