Segment and Revenue Information (Reconciliation of Assets from Segment to Consolidated) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 117,359	$ 112,362
Operating Segments [Member] | Commercial Airplanes
Segment Reporting Information [Line Items]
Assets	64,670	64,647
Operating Segments [Member] | Defense, Space & Security
Segment Reporting Information [Line Items]
Assets	19,794	18,476
Operating Segments [Member] | Global Services
Segment Reporting Information [Line Items]
Assets	17,910	12,491
Operating Segments [Member] | Boeing Capital Corporation [Member]
Segment Reporting Information [Line Items]
Assets	2,809	3,156
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 12,176	$ 13,592