Acquisitions, Divestiture and Investment - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	Mar. 27, 2021	Jul. 17, 2020	Jul. 02, 2020	Jun. 27, 2020
Business Acquisition [Line Items]
Goodwill	$ 569.0			$ 360.8
Display Link Corporation [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		$ 40.9
Short-term investments		94.0
Accounts receivable, net		7.1
Inventory		33.1
Prepaid expenses and other current assets		9.1
Property and equipment		6.8
Intangible assets		193.0
Right-of-use lease asset		20.0
Non-current other assets		0.6
Total identifiable assets acquired		404.6
Accounts payable		(5.2)
Other accrued liabilities		(9.1)
Short-term lease liabilities		(1.7)
Long-term lease liabilities		(18.2)
Other long-term liabilities		(31.8)
Total liabilities		(66.0)
Net identifiable assets acquired		338.6
Goodwill		105.4
Net assets acquired		$ 444.0
Broadcom [Member]
Business Acquisition [Line Items]
Property and equipment			$ 1.0
Intangible assets			123.0
Total identifiable assets acquired			124.0
Liabilities assumed			(0.2)
Goodwill			102.8
Net assets acquired			$ 226.6