Goodwill and Acquired Intangibles - Schedule of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 8,084	$ 8,093
Goodwill adjustments	10	(10)
Goodwill, ending balance	17,275	8,084
Operating Segments
Goodwill [Roll Forward]
Acquisitions	9,997	18
Dispositions and divestiture	(6)	(17)
Operating Segments \| Digital Aviation Solutions
Goodwill [Roll Forward]
Dispositions and divestiture	(810)
Commercial Airplanes
Goodwill [Roll Forward]
Goodwill, beginning balance	1,328	1,319
Goodwill adjustments
Goodwill, ending balance	11,325	1,328
Commercial Airplanes \| Operating Segments
Goodwill [Roll Forward]
Acquisitions	9,997	9
Dispositions and divestiture
Defense, Space & Security
Goodwill [Roll Forward]
Goodwill, beginning balance	3,218	3,235
Goodwill adjustments
Goodwill, ending balance	3,218	3,218
Defense, Space & Security \| Operating Segments
Goodwill [Roll Forward]
Acquisitions
Dispositions and divestiture		(17)
Global Services
Goodwill [Roll Forward]
Goodwill, beginning balance	3,444	3,454
Goodwill adjustments	10	(10)
Goodwill, ending balance	2,638	3,444
Global Services \| Operating Segments
Goodwill [Roll Forward]
Acquisitions
Dispositions and divestiture	(6)
Global Services \| Operating Segments \| Digital Aviation Solutions
Goodwill [Roll Forward]
Dispositions and divestiture	(810)
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	94	85
Goodwill adjustments
Goodwill, ending balance	94	94
Other \| Operating Segments
Goodwill [Roll Forward]
Acquisitions		9
Dispositions and divestiture

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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