Financial Statement Details - Non-cash Operating Activities (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 28, 2020	Jun. 30, 2019	Jun. 24, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Lease asset and liability additions	$ 31.0	$ 0.0	$ 0.0
Lease asset and liability modifications, net	4.4	$ 0.0	$ 0.0
Operating lease additions due to adoption of ASC 842	$ 12.2

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

Name:	us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration