Segment and Revenue Information - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total revenues	$ 19,496	$ 16,569
Research and development expense, net	844	868
Earnings/(loss) from operations	461	(86)
Operating Segments
Segment Reporting Information [Line Items]
Earnings/(loss) from operations	561	(76)
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Total revenues	8,147	4,653
Research and development expense, net	534	518
Other segment items	8,150	5,278
Earnings/(loss) from operations	(537)	(1,143)
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Total revenues	6,298	6,950
Research and development expense, net	199	235
Other segment items	5,944	6,564
Earnings/(loss) from operations	155	151
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Total revenues	5,063	5,045
Research and development expense, net	29	26
Other segment items	4,091	4,103
Earnings/(loss) from operations	$ 943	$ 916