Segment Information (Schedule Of Depreciation And Amortization Expense By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 2,069	$ 1,910	$ 1,833
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	521	442	388
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	252	220	248
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	322	312	317
Operating Segments [Member] | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	70	83	87
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 904	$ 853	$ 793