Segment and Revenue Information - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 89,463	$ 66,517	$ 77,794
Asia
Disaggregation of Revenue [Line Items]
Total revenues	16,466	11,994	10,013
Europe
Disaggregation of Revenue [Line Items]
Total revenues	11,419	8,734	10,520
Middle East
Disaggregation of Revenue [Line Items]
Total revenues	7,023	4,635	6,594
Total non-U.S. revenues
Disaggregation of Revenue [Line Items]
Total revenues	41,380	30,789	32,387
United States
Disaggregation of Revenue [Line Items]
Total revenues	48,083	36,171	45,380
Operating Segments | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Total revenues	41,494	22,861	33,901
Operating Segments | Commercial Airplanes | B-737-Max | Customer Concessions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax		(443)	27
Operating Segments | Commercial Airplanes | Total revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 41,332	$ 22,726	$ 33,770
Operating Segments | Commercial Airplanes | Revenue recognized on fixed-price contracts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	100.00%	100.00%	100.00%
Operating Segments | Commercial Airplanes | Revenue recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	100.00%	99.00%	99.00%
Operating Segments | Commercial Airplanes | Asia
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 11,733	$ 8,060	$ 6,328
Operating Segments | Commercial Airplanes | Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	6,536	3,956	6,172
Operating Segments | Commercial Airplanes | Middle East
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,202	2,012	4,311
Operating Segments | Commercial Airplanes | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,504	1,815	2,431
Operating Segments | Commercial Airplanes | Total non-U.S. revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	24,975	15,843	19,242
Operating Segments | Commercial Airplanes | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	16,357	7,326	14,501
Operating Segments | Defense, Space & Security
Disaggregation of Revenue [Line Items]
Total revenues	$ 27,234	$ 23,918	$ 24,933
Operating Segments | Defense, Space & Security | Revenue from the U.S. government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	91.00%	91.00%	91.00%
Operating Segments | Defense, Space & Security | Revenue recognized over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	99.00%	99.00%	99.00%
Operating Segments | Defense, Space & Security | Revenue recognized on fixed-price contracts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	58.00%	54.00%	58.00%
Operating Segments | Defense, Space & Security | Total non-U.S. revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 6,164	$ 5,329	$ 4,882
Operating Segments | Defense, Space & Security | United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	21,070	18,589	20,051
Operating Segments | Global Services
Disaggregation of Revenue [Line Items]
Total revenues	20,923	19,954	19,127
Operating Segments | Global Services | Commercial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	12,015	11,736	11,020
Operating Segments | Global Services | Government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,508	7,832	7,751
Operating Segments | Global Services | Total revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 20,523	$ 19,568	$ 18,771
Operating Segments | Global Services | Revenue from the U.S. government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	31.00%	29.00%	30.00%
Operating Segments | Global Services | Revenue recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	53.00%	53.00%	51.00%
Operating Segments | Global Services | Revenue recognized on fixed-price contracts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	86.00%	86.00%	87.00%
Intersegment revenues, eliminated on consolidation | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Total revenues	$ 162	$ 135	$ 131
Intersegment revenues, eliminated on consolidation | Global Services
Disaggregation of Revenue [Line Items]
Total revenues	$ 400	$ 386	$ 356