Segment Information (Reconciliation of Assets from Segment to Consolidated) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Assets	$ 92,333	$ 89,997
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Assets	47,737	46,745
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Assets	15,865	14,123
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Assets	12,353	11,490
Operating Segments [Member] | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Assets	3,156	4,139
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 13,222	$ 13,500