Segment and Revenue Information - Schedule of Capital Expenditures by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Capital expenditures	$ 674	$ 567
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Capital expenditures	106	102
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Capital expenditures	54	68
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Capital expenditures	26	35
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Capital expenditures	$ 488	$ 362