Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 28,341	$ 25,146	$ 24,258	$ 23,382	$ 24,770	$ 24,223	$ 23,051	$ 21,961	$ 101,127	$ 94,005	$ 93,496
Europe
Disaggregation of Revenue [Line Items]
Revenues									12,976	11,240	13,018
China
Disaggregation of Revenue [Line Items]
Revenues									13,764	11,932	10,289
Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenues									12,141	9,195	9,892
Middle East
Disaggregation of Revenue [Line Items]
Revenues									9,745	11,433	12,251
Non-U.S.
Disaggregation of Revenue [Line Items]
Revenues									56,451	50,299	53,189
United States
Disaggregation of Revenue [Line Items]
Revenues									44,676	43,706	40,307
Operating Segments [Member] | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									60,715	58,014	59,378
Operating Segments [Member] | Commercial Airplanes | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 59,203	$ 56,095	$ 57,385
Operating Segments [Member] | 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 [Member] | Commercial Airplanes | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									94.00%	95.00%	95.00%
Operating Segments [Member] | Commercial Airplanes | Europe
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 9,719	$ 8,478	$ 10,124
Operating Segments [Member] | Commercial Airplanes | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									13,068	10,982	9,819
Operating Segments [Member] | Commercial Airplanes | Asia, Other Than China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									8,274	6,482	7,438
Operating Segments [Member] | Commercial Airplanes | Middle East
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									5,876	8,927	9,505
Operating Segments [Member] | Commercial Airplanes | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									5,185	4,365	5,730
Operating Segments [Member] | Commercial Airplanes | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									42,122	39,234	42,616
Operating Segments [Member] | Commercial Airplanes | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									17,081	16,861	14,769
Operating Segments [Member] | Defense, Space & Security
Disaggregation of Revenue [Line Items]
Revenues									$ 23,195	$ 20,561	$ 20,180
Operating Segments [Member] | Defense, Space & Security | U.S. Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									86.00%	87.00%	88.00%
Operating Segments [Member] | Defense, Space & Security | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									98.00%	97.00%	99.00%
Operating Segments [Member] | Defense, Space & Security | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									65.00%	63.00%	64.00%
Operating Segments [Member] | Defense, Space & Security | Non-U.S.
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 6,703	$ 4,672	$ 4,953
Operating Segments [Member] | Defense, Space & Security | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									16,492	15,889	15,227
Operating Segments [Member] | Global Services
Disaggregation of Revenue [Line Items]
Revenues									17,018	14,581	13,819
Operating Segments [Member] | Global Services | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									9,227	7,622	6,918
Operating Segments [Member] | Global Services | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 7,620	$ 6,910	$ 6,860
Operating Segments [Member] | Global Services | U.S. Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									36.00%	39.00%	41.00%
Operating Segments [Member] | Global Services | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 16,847	$ 14,532	$ 13,778
Operating Segments [Member] | Global Services | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									54.00%	50.00%	43.00%
Operating Segments [Member] | Global Services | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage									90.00%	89.00%	87.00%
Intersegment Eliminations [Member] | Commercial Airplanes
Disaggregation of Revenue [Line Items]
Revenues									$ 1,512	$ 1,919	$ 1,993
Intersegment Eliminations [Member] | Global Services
Disaggregation of Revenue [Line Items]
Revenues									$ 171	$ 49	$ 41