Segment Information (Schedule Of Capital Expenditures By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Capital expenditures	$ 2,450	$ 2,236	$ 2,098
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Capital expenditures	889	698	694
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Capital expenditures	288	336	330
Operating Segments [Member] | Defense, Space & Security [Member] | Boeing Military Aircraft [Member]
Segment Reporting Information [Line Items]
Capital expenditures	128	175	186
Operating Segments [Member] | Defense, Space & Security [Member] | Network & Space Systems [Member]
Segment Reporting Information [Line Items]
Capital expenditures	98	93	96
Operating Segments [Member] | Defense, Space & Security [Member] | Global Services & Support [Member]
Segment Reporting Information [Line Items]
Capital expenditures	62	68	48
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,273	$ 1,202	$ 1,074