Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Assets	$ 114,659	$ 112,362
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Assets	65,509	64,647
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Assets	18,688	18,476
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Assets	12,843	12,491
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Assets	3,120	3,156
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 14,499	$ 13,592