GOODWILL (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 28, 2019	Jun. 29, 2018
Goodwill [Roll Forward]
Beginning Balance	$ 5,372	$ 5,366
Currency translation adjustments	(2)	6
Ending Balance	5,340	5,372
Harris Night Vision \| Discontinued Operations, Held-for-sale or Disposed of by Sale
Goodwill [Roll Forward]
Decrease from reclassification to assets of disposal group held for sale	(30)
Communication Systems
Goodwill [Roll Forward]
Beginning Balance	785	785
Currency translation adjustments	0	0
Ending Balance	755	785
Communication Systems \| Harris Night Vision \| Discontinued Operations, Held-for-sale or Disposed of by Sale
Goodwill [Roll Forward]
Decrease from reclassification to assets of disposal group held for sale	(30)
Electronic Systems
Goodwill [Roll Forward]
Beginning Balance	3,107	3,104
Currency translation adjustments	(1)	3
Ending Balance	3,106	3,107
Electronic Systems \| Harris Night Vision \| Discontinued Operations, Held-for-sale or Disposed of by Sale
Goodwill [Roll Forward]
Decrease from reclassification to assets of disposal group held for sale	0
Space and Intelligence Systems
Goodwill [Roll Forward]
Beginning Balance	1,480	1,477
Currency translation adjustments	(1)	3
Ending Balance	1,479	$ 1,480
Space and Intelligence Systems \| Harris Night Vision \| Discontinued Operations, Held-for-sale or Disposed of by Sale
Goodwill [Roll Forward]
Decrease from reclassification to assets of disposal group held for sale	$ 0

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
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