Goodwill and Acquired Intangibles (Detail) $ in Millions	6 Months Ended
Jun. 26, 2016 USD ($)
Goodwill [Line Items]
Goodwill, beginning balance	$ 13,576
Acquisitions	43
Divestitures	(7)
Foreign currency translation	9
Goodwill, ending balance	13,621
Aeronautics
Goodwill [Line Items]
Goodwill, beginning balance	171
Goodwill, ending balance	171
Information Systems & Global Solutions
Goodwill [Line Items]
Goodwill, beginning balance	2,881
Foreign currency translation	(13)
Goodwill, ending balance	2,868
Missiles and Fire Control
Goodwill [Line Items]
Goodwill, beginning balance	2,198
Foreign currency translation	(5)
Goodwill, ending balance	2,193
Mission Systems and Training
Goodwill [Line Items]
Goodwill, beginning balance	6,738
Acquisitions	43
Divestitures	(7)
Foreign currency translation	28
Goodwill, ending balance	6,802
Space Systems
Goodwill [Line Items]
Goodwill, beginning balance	1,588
Foreign currency translation	(1)
Goodwill, ending balance	$ 1,587

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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