Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 16,908	$ 22,917
Unallocated items, eliminations and other
Disaggregation of Revenue [Line Items]
Revenues	(32)	(177)
Global Services | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	4,628	4,619
Global Services | Operating Segments | Commercial Customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,523	2,585
Global Services | Operating Segments | Government Customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,033	1,997
Global Services | Operating Segments | External Customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,556	$ 4,582
Global Services | Operating Segments | U S Government Contracts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	35.00%	33.00%
Global Services | Operating Segments | Fixed-price Contract
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	89.00%	89.00%
Global Services | Operating Segments | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	55.00%	57.00%
Global Services | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	$ 72	$ 37
Commercial Airplanes | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	6,205	11,822
Commercial Airplanes | Operating Segments | External Customers
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 6,193	$ 11,653
Commercial Airplanes | Operating Segments | Fixed-price Contract
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	100.00%	100.00%
Commercial Airplanes | Operating Segments | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	100.00%	100.00%
Commercial Airplanes | Operating Segments | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,989	$ 7,483
Commercial Airplanes | Operating Segments | Europe
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,970	1,661
Commercial Airplanes | Operating Segments | Asia
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,159	3,174
Commercial Airplanes | Operating Segments | Middle East
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	549	1,110
Commercial Airplanes | Operating Segments | Other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	311	1,538
Commercial Airplanes | Operating Segments | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,174	4,170
Commercial Airplanes | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	12	169
Defense, Space & Security | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	$ 6,042	$ 6,587
Defense, Space & Security | Operating Segments | U S Government Contracts
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	89.00%	88.00%
Defense, Space & Security | Operating Segments | Fixed-price Contract
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	67.00%	69.00%
Defense, Space & Security | Operating Segments | Transferred over Time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	99.00%	98.00%
Defense, Space & Security | Operating Segments | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,726	$ 1,704
Defense, Space & Security | Operating Segments | United States
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,316	$ 4,883
B-737-Max | Customer Concessions | Commercial Airplanes | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 30