Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Assets	$ 120,209	$ 117,359
Operating Segments [Member] | Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Assets	67,366	64,788
Operating Segments [Member] | Defense, Space & Security [Member]
Segment Reporting Information [Line Items]
Assets	19,628	19,594
Operating Segments [Member] | Global Services [Member]
Segment Reporting Information [Line Items]
Assets	18,360	17,921
Operating Segments [Member] | Boeing Capital [Member]
Segment Reporting Information [Line Items]
Assets	2,544	2,809
Unallocated items, eliminations and other [Member]
Segment Reporting Information [Line Items]
Assets	$ 12,311	$ 12,247