Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 148,935	$ 152,136
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Assets	78,523	77,973
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Assets	15,479	14,256
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Assets	16,974	17,399
Operating Segments | Boeing Capital
Segment Reporting Information [Line Items]
Assets	1,878	1,978
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Assets	$ 36,081	$ 40,530