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Acquired Intangibles and Goodwill - Summary of Life, Gross Carrying Value of Acquired Intangible Assets, and Related Accumulated Amortization (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 25, 2021	Jun. 26, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 508.1	$ 544.7
Accumulated Amortization	(231.8)	(243.2)
Net Carrying Value	$ 276.3	301.5
Weighted Average Life in Years	5 years 6 months
Display Driver Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 20.4	20.4
Accumulated Amortization	(18.2)	(17.5)
Net Carrying Value	$ 2.2	2.9
Weighted Average Life in Years	7 years
Audio and Video Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 117.1	138.6
Accumulated Amortization	(81.2)	(97.6)
Net Carrying Value	$ 35.9	41.0
Weighted Average Life in Years	5 years 10 months 24 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 125.5	125.5
Accumulated Amortization	(71.6)	(63.8)
Net Carrying Value	$ 53.9	61.7
Weighted Average Life in Years	4 years 2 months 12 days
Wireless and Connectivity Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 93.0	93.0
Accumulated Amortization	(18.1)	(14.2)
Net Carrying Value	$ 74.9	78.8
Weighted Average Life in Years	6 years
Video Interface Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 82.0	82.0
Accumulated Amortization	(31.9)	(25.1)
Net Carrying Value	$ 50.1	56.9
Weighted Average Life in Years	3 years
Licensed Technology and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 9.9	13.0
Accumulated Amortization	(5.6)	(8.1)
Net Carrying Value	$ 4.3	4.9
Weighted Average Life in Years	4 years 6 months
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 4.4	4.4
Accumulated Amortization	(3.3)	(3.2)
Net Carrying Value	$ 1.1	1.2
Weighted Average Life in Years	8 years
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 0.0	12.0
Accumulated Amortization	0.0	(12.0)
Tradename [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4.8	4.8
Accumulated Amortization	(1.9)	(1.7)
Net Carrying Value	$ 2.9	3.1
Weighted Average Life in Years	5 years 1 month 6 days
In-Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 51.0	51.0
Net Carrying Value	$ 51.0	$ 51.0

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 350
-SubTopic 30
-Section 50
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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
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