Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Assets	$ 161,261	$ 133,625
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Assets	83,187	73,995
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Assets	15,723	15,757
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Assets	18,381	18,605
Operating Segments | Boeing Capital
Segment Reporting Information [Line Items]
Assets	2,053	2,269
Corporate Reconciling Items And Eliminations
Segment Reporting Information [Line Items]
Assets	$ 41,917	$ 22,999