Segment Information (Schedule Of Capital Expenditures By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Capital expenditures	$ 2,613	$ 2,450	$ 2,236
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Capital expenditures	993	889	698
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Capital expenditures	336	288	336
Operating Segments [Member] | Defense, Space & Security [Member] | Boeing Military Aircraft [Member]
Segment Reporting Information [Line Items]
Capital expenditures	161	128	175
Operating Segments [Member] | Defense, Space & Security [Member] | Network & Space Systems [Member]
Segment Reporting Information [Line Items]
Capital expenditures	63	98	93
Operating Segments [Member] | Defense, Space & Security [Member] | Global Services & Support [Member]
Segment Reporting Information [Line Items]
Capital expenditures	112	62	68
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,284	$ 1,273	$ 1,202