Segment and Revenue Information - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Total revenues	$ 23,270	$ 17,840	$ 65,515	$ 51,275
Research and development expense, net	897	1,154	2,651	2,976
Loss from operations	(4,781)	(5,761)	(4,496)	(6,937)
Operating Segments
Segment Reporting Information [Line Items]
Loss from operations	(4,301)	(5,571)	(3,138)	(6,405)
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Total revenues	11,094	7,443	30,115	18,099
Research and development expense, net	565	779	1,657	1,852
Other segment items	15,882	10,685	34,905	22,126
Loss from operations	(5,353)	(4,021)	(6,447)	(5,879)
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Total revenues	6,902	5,536	19,817	18,507
Research and development expense, net	198	234	618	728
Other segment items	6,590	7,686	18,820	20,925
Loss from operations	114	(2,384)	379	(3,146)
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Total revenues	5,370	4,901	15,714	14,835
Research and development expense, net	32	36	91	103
Other segment items	4,400	4,031	12,693	12,112
Loss from operations	$ 938	$ 834	$ 2,930	$ 2,620