Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 76,559	$ 101,127	$ 94,005
Revenues	$ 17,911	$ 19,980	$ 15,751	$ 22,917	$ 28,341	$ 25,146	$ 24,258	$ 23,382	76,559	101,127	94,005
Europe
Disaggregation of Revenue [Line Items]
Revenues									10,366	12,976	11,240
China
Disaggregation of Revenue [Line Items]
Revenues									5,684	13,764	11,932
Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenues									10,662	12,141	9,195
Middle East
Disaggregation of Revenue [Line Items]
Revenues									9,272	9,745	11,433
Non-U.S.
Disaggregation of Revenue [Line Items]
Revenues									42,137	56,451	50,299
United States
Disaggregation of Revenue [Line Items]
Revenues									42,681	44,676	43,706
Operating Segments | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									32,255	57,499	54,612
Operating Segments | Commercial Airplanes | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 31,903	$ 57,469	$ 54,416
Operating Segments | Commercial Airplanes | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments | Commercial Airplanes | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									100.00%	100.00%	100.00%
Operating Segments | Commercial Airplanes | Europe
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 5,829	$ 9,719	$ 8,478
Operating Segments | Commercial Airplanes | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									5,051	13,068	10,982
Operating Segments | Commercial Airplanes | Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									7,395	8,274	6,482
Operating Segments | Commercial Airplanes | Middle East
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									5,761	5,876	8,927
Operating Segments | Commercial Airplanes | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									3,450	5,185	4,365
Operating Segments | Commercial Airplanes | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									27,486	42,122	39,234
Operating Segments | Commercial Airplanes | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									12,676	15,347	15,182
Operating Segments | Defense, Space & Security
Disaggregation of Revenue [Line Items]
Revenues									$ 26,227	$ 26,392	$ 23,938
Operating Segments | Defense, Space & Security | U.S. Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									89.00%	88.00%	89.00%
Operating Segments | Defense, Space & Security | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									98.00%	98.00%	97.00%
Operating Segments | Defense, Space & Security | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									70.00%	70.00%	69.00%
Operating Segments | Defense, Space & Security | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 6,654	$ 6,816	$ 4,954
Operating Segments | Defense, Space & Security | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									19,573	19,576	18,984
Operating Segments | Global Services
Disaggregation of Revenue [Line Items]
Revenues									18,468	17,056	14,611
Operating Segments | Global Services | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									10,167	9,227	7,622
Operating Segments | Global Services | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 8,107	$ 7,658	$ 6,940
Operating Segments | Global Services | U.S. Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									34.00%	36.00%	39.00%
Operating Segments | Global Services | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 18,274	$ 16,885	$ 14,562
Operating Segments | Global Services | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									55.00%	54.00%	50.00%
Operating Segments | Global Services | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									90.00%	90.00%	89.00%
Intersegment Eliminations [Member] | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									$ 352	$ 30	$ 196
Intersegment Eliminations [Member] | Global Services
Disaggregation of Revenue [Line Items]
Revenues									$ 194	$ 171	$ 49