Segment Information (Schedule of Intersegment Revenues, Eliminated In Unallocated Items and Eliminations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Intersegment Revenues	$ 25,368	$ 24,309	$ 22,739	$ 20,976	$ 23,286	$ 23,898	$ 24,755	$ 22,632	$ 93,392	$ 94,571	$ 96,114
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment Revenues									1,648	2,092	1,810
Commercial Airplanes [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment Revenues									1,571	2,001	1,700
Global Services [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment Revenues									49	75	95
Boeing Capital Corporation [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment Revenues									$ 28	$ 16	$ 15