Goodwill and Identifiable Intangible Assets - Changes in Goodwill by Segment (Detail) $ in Millions	9 Months Ended
Sep. 23, 2016 USD ($)
Goodwill [Line Items]
Goodwill	$ 6,723
Accumulated impairment losses	(442)
Balance, Beginning	6,281
Business acquisitions	22
Foreign currency translation adjustments	(19)
Balance, Ending	6,284
Goodwill	6,726
Accumulated impairment losses	(442)
Goodwill, net of accumulated impairment losses	6,284
Electronic Systems [Member]
Goodwill [Line Items]
Goodwill	3,994
Accumulated impairment losses	(69)
Balance, Beginning	3,925
Business acquisitions	2
Foreign currency translation adjustments	(31)
Balance, Ending	3,896
Goodwill	3,965
Accumulated impairment losses	(69)
Goodwill, net of accumulated impairment losses	3,896
Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill	1,691
Accumulated impairment losses	(338)
Balance, Beginning	1,353
Business acquisitions
Foreign currency translation adjustments	12
Balance, Ending	1,365
Goodwill	1,703
Accumulated impairment losses	(338)
Goodwill, net of accumulated impairment losses	1,365
Communication Systems [Member]
Goodwill [Line Items]
Goodwill	1,038
Accumulated impairment losses	(35)
Balance, Beginning	1,003
Business acquisitions	20
Foreign currency translation adjustments
Balance, Ending	1,023
Goodwill	1,058
Accumulated impairment losses	(35)
Goodwill, net of accumulated impairment losses	$ 1,023

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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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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