Goodwill And Acquired Intangibles (Schedule Of Goodwill By Reportable Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 5,119	$ 5,043
Acquisitions	21	102
Goodwill adjustments	(14)	(26)
Goodwill, Ending Balance	5,126	5,119
Operating Segments [Member] | Commercial Airplanes [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	2,131	2,108
Acquisitions	6	45
Goodwill adjustments	(14)	(22)
Goodwill, Ending Balance	2,123	2,131
Operating Segments [Member] | Defense, Space & Security [Member] | Boeing Military Aircraft [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	964	$ 964
Acquisitions	$ 15
Goodwill adjustments
Goodwill, Ending Balance	$ 979	$ 964
Operating Segments [Member] | Defense, Space & Security [Member] | Network & Space Systems [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 1,566	1,513
Acquisitions		57
Goodwill adjustments		(4)
Goodwill, Ending Balance	$ 1,566	1,566
Operating Segments [Member] | Defense, Space & Security [Member] | Global Services & Support [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 458	$ 458
Acquisitions
Goodwill adjustments
Goodwill, Ending Balance	$ 458	$ 458