Acquisitions, Divestiture and Investment - Additional Information (Detail) - USD ($) $ in Millions			1 Months Ended		12 Months Ended
	Jul. 17, 2020	Jul. 02, 2020	Dec. 31, 2020	Apr. 30, 2020	Jun. 26, 2021	Jun. 27, 2020	Jun. 29, 2019
Business Acquisition [Line Items]
Acquisition agreement date	Jul. 17, 2020
Business acquisition, ownership percentage	100.00%
Purchase price held in escrow	$ 3.1
Acquisition closing effective date	Jul. 31, 2020
Goodwill					$ 570.0	$ 360.8	$ 372.8
Increase in prepaid expense					2.3
Decrease in other accrued liabilities					(0.8)
Other long-term liabilities					1.4
Fair value of other acquired net tangible assets					1.7
Net revenue					1,339.6	1,333.9	$ 1,472.2
Decrease in other accrued liabilities					0.8
Gain on sale of assets						105.1
Asset Purchase Agreement [Member]
Business Acquisition [Line Items]
Proceeds From Divestiture Of Businesses Net Of Cash Divested			$ 35.0	$ 138.7
Gain on sale of assets			$ 34.2	105.1
Assets held for sale				$ 33.6
Display Link Corporation [Member]
Business Acquisition [Line Items]
Purchase price included in cash	$ 305.0
Business combination, consideration transferred					444.0
Goodwill	106.4
Business acquisition, Goodwill expected income tax deductible amount					0.0
Net revenue					110.0
Pro forma adjustments to net income/(loss)					1.1	$ 33.8
Prepaid expenses and other current assets	9.1
Non-current other assets	$ 0.6
Business Acquisition [Member]
Business Acquisition [Line Items]
Goodwill					0.9
Broadcom Wireless Connectivity [Member]
Business Acquisition [Line Items]
Acquisition agreement date		Jul. 02, 2020
Purchase price included in cash		$ 250.0
Acquisition closing effective date		Jul. 23, 2020
Net revenue					$ 100.4
Business combination description		We acquired these assets and assumed certain liabilities from Broadcom in order to obtain wireless connectivity technology which will enhance our current IoT business.
Transition agreements duration		3 years
Discount Rates Applied To Estimated Cash Flows For Order Backlog					2.20%
Discount Rates Applied To Estimated Cash Flows For All Intangible Assets Acquired					13.00%
Broadcom Wireless Connectivity [Member] | Derivative And Roadmap Product Agreement
Business Acquisition [Line Items]
Business combination, consideration transferred					$ 3.5
Business combination, cost of services					25.0
Prepaid expenses and other current assets					10.0
Non-current other assets					15.0
Business combination, non-current other assets after amortization					5.8
Cash payments to employees from acquisitions					$ 2.0