Segment and Revenue Information Segment and Revenue Information (Schedule of Revenue Disaggregation) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 24,258	$ 23,051	$ 47,640	$ 45,012
Unallocated items, eliminations and other [Member]
Disaggregation of Revenue [Line Items]
Revenues	22	5	(18)	156
Operating Segments [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,090	3,552	8,033	7,205
Operating Segments [Member] | Global Services [Member] | Commercial Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,743	1,884	4,845	3,732
Operating Segments [Member] | Global Services [Member] | Government Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,313	1,655	3,095	3,447
Operating Segments [Member] | Global Services [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,056	$ 3,539	$ 7,940	$ 7,179
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	26.00%	39.00%	31.00%	41.00%
Operating Segments [Member] | Global Services [Member] | Fixed-price Contract [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, excluding assessed tax, Percentage	90.00%	90.00%	89.00%	89.00%
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	52.00%	48.00%	53.00%	48.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 14,481	$ 14,280	$ 28,133	$ 27,233
Operating Segments [Member] | Commercial Airplanes Segment [Member] | External Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 14,054	$ 13,919	$ 27,325	$ 26,342
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%	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	96.00%	95.00%	96.00%	94.00%
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,044	$ 10,092	$ 18,976	$ 18,094
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,108	2,633	5,307	4,765
Operating Segments [Member] | Commercial Airplanes Segment [Member] | China
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,709	2,315	4,756	3,494
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	2,349	1,848	4,080	3,083
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Middle East [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,872	2,182	2,333	4,580
Operating Segments [Member] | Commercial Airplanes Segment [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,006	1,114	2,500	2,172
Operating Segments [Member] | Commercial Airplanes Segment [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,010	3,827	8,349	8,248
Operating Segments [Member] | Defense, Space & Security [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 5,593	$ 5,142	$ 11,355	$ 10,254
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	85.00%	91.00%	86.00%	89.00%
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	63.00%	64.00%	65.00%	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	99.00%	100.00%	98.00%	98.00%
Operating Segments [Member] | Defense, Space & Security [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,796	$ 1,109	$ 3,332	$ 2,247
Operating Segments [Member] | Defense, Space & Security [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,797	4,033	8,023	8,007
Intersegment Eliminations [Member] | Global Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	34	13	93	26
Intersegment Eliminations [Member] | Commercial Airplanes Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 427	$ 361	$ 808	$ 891