Goodwill and Other Intangible Assets - Goodwill by Business Segment (Details) $ in Millions	3 Months Ended
Sep. 27, 2019 USD ($)
Changes in the carrying amount of goodwill
Balance at June 28, 2019	$ 5,340
Goodwill acquired	15,423
Currency translation adjustments	(14)
Balance at September 27, 2019	20,749
Integrated Mission Systems
Changes in the carrying amount of goodwill
Balance at June 28, 2019	63
Goodwill acquired	6,297
Currency translation adjustments	0
Balance at September 27, 2019	6,360
Space and Airborne Systems
Changes in the carrying amount of goodwill
Balance at June 28, 2019	3,707
Goodwill acquired	1,320
Currency translation adjustments	(3)
Balance at September 27, 2019	5,024
Communication Systems
Changes in the carrying amount of goodwill
Balance at June 28, 2019	924
Goodwill acquired	2,475
Currency translation adjustments	0
Balance at September 27, 2019	3,399
Aviation Systems
Changes in the carrying amount of goodwill
Balance at June 28, 2019	646
Goodwill acquired	5,331
Currency translation adjustments	(11)
Balance at September 27, 2019	$ 5,966

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
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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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

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

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