Segment Information (Schedule Of Capital Expenditures By Segment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Capital expenditures	$ 2,236	$ 2,098	$ 1,703
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Capital expenditures	698	694	665
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Capital expenditures	336	330	325
Operating Segments [Member] | Defense, Space & Security [Member] | Boeing Military Aircraft [Member]
Segment Reporting Information [Line Items]
Capital expenditures	175	186	153
Operating Segments [Member] | Defense, Space & Security [Member] | Network & Space Systems [Member]
Segment Reporting Information [Line Items]
Capital expenditures	93	96	115
Operating Segments [Member] | Defense, Space & Security [Member] | Global Services & Support [Member]
Segment Reporting Information [Line Items]
Capital expenditures	68	48	57
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,202	$ 1,074	$ 713