Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 23,382	$ 21,961
Operating Segments [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,652	12,953
Operating Segments [Member] | Commercial Airplanes Segment [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 13,271	$ 12,423
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	100.00%	100.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	95.00%	93.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 8,932	$ 8,002
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,199	2,132
Operating Segments [Member] | Commercial Airplanes Segment [Member] | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,047	1,179
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Asia Other Than China [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,731	1,235
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Middle East [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	461	2,398
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,494	1,058
Operating Segments [Member] | Commercial Airplanes Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,339	4,421
Operating Segments [Member] | Defense, Space & Security [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 5,762	$ 5,112
Operating Segments [Member] | Defense, Space & Security [Member] | U S Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	87.00%	87.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	67.00%	64.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	98.00%	96.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,536	$ 1,138
Operating Segments [Member] | Defense, Space & Security [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,226	3,974
Operating Segments [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,943	3,653
Operating Segments [Member] | Global Services [Member] | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,102	1,848
Operating Segments [Member] | Global Services [Member] | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,782	1,792
Operating Segments [Member] | Global Services [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,884	$ 3,640
Operating Segments [Member] | Global Services [Member] | U S Government Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	37.00%	42.00%
Operating Segments [Member] | Global Services [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	88.00%	88.00%
Operating Segments [Member] | Global Services [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	54.00%	48.00%
Intersegment Eliminations [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 381	$ 530
Intersegment Eliminations [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 59	$ 13