Segment and Revenue Information - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Total revenues	$ 23,270	$ 17,840	$ 65,515	$ 51,275
Commercial Airplanes \| Operating Segments
Disaggregation of Revenue [Line Items]
Total revenues	11,094	7,443	30,115	18,099
Commercial Airplanes \| Operating Segments \| Total revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 11,029	$ 7,423	$ 30,003	$ 18,006
Commercial Airplanes \| Operating Segments \| 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%	100.00%
Commercial Airplanes \| Operating Segments \| 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%	100.00%	99.00%
Commercial Airplanes \| Operating Segments \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 3,182	$ 2,354	$ 12,326	$ 5,512
Commercial Airplanes \| Operating Segments \| Total non-U.S. revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	7,847	5,069	17,672	12,937
Commercial Airplanes \| Operating Segments \| Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,291	1,499	3,789	3,046
Commercial Airplanes \| Operating Segments \| Asia
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,509	2,635	8,888	7,028
Commercial Airplanes \| Operating Segments \| Middle East
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,266	444	3,026	1,618
Commercial Airplanes \| Operating Segments \| Other non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	781	491	1,969	1,245
Commercial Airplanes \| Intersegment revenues eliminated on consolidation
Disaggregation of Revenue [Line Items]
Total revenues	65	20	112	93
Defense, Space & Security \| Operating Segments
Disaggregation of Revenue [Line Items]
Total revenues	$ 6,902	$ 5,536	$ 19,817	$ 18,507
Defense, Space & Security \| Operating Segments \| Revenue from the U.S. government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	91.00%	92.00%	91.00%	91.00%
Defense, Space & Security \| Operating Segments \| Revenue recognized on fixed-price contracts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	56.00%	49.00%	57.00%	53.00%
Defense, Space & Security \| Operating Segments \| Revenue recognized over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	99.00%	99.00%	100.00%	99.00%
Defense, Space & Security \| Operating Segments \| United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 5,325	$ 4,361	$ 15,485	$ 14,324
Defense, Space & Security \| Operating Segments \| Total non-U.S. revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,577	1,175	4,332	4,183
Global Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Total revenues	5,370	4,901	15,714	14,835
Global Services \| Operating Segments \| Commercial
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,088	2,882	9,055	8,782
Global Services \| Operating Segments \| Government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,169	1,935	6,337	5,764
Global Services \| Operating Segments \| Total revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 5,257	$ 4,817	$ 15,392	$ 14,546
Global Services \| Operating Segments \| Revenue from the U.S. government
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	30.00%	29.00%	30.00%	29.00%
Global Services \| Operating Segments \| Revenue recognized on fixed-price contracts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax, percentage	85.00%	86.00%	86.00%	87.00%
Global Services \| Operating Segments \| 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%	53.00%	53.00%
Global Services \| Intersegment revenues eliminated on consolidation
Disaggregation of Revenue [Line Items]
Total revenues	$ 113	$ 84	$ 322	$ 289
B-737-Max \| Customer Concessions \| Commercial Airplanes \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax			$ 5	$ (443)