Segment and Revenue Information - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Assets	$ 134,484	$ 137,012
Operating Segments | Commercial Airplanes
Segment Reporting Information [Line Items]
Assets	80,811	77,047
Operating Segments | Defense, Space & Security
Segment Reporting Information [Line Items]
Assets	16,046	14,921
Operating Segments | Global Services
Segment Reporting Information [Line Items]
Assets	16,365	16,193
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Assets	$ 21,262	$ 28,851