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Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - Estimate of Fair Value Measurement [Member] - USD ($) $ in Millions		Dec. 30, 2023	Jun. 24, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	[1]	$ 563.0	$ 80.4
Corporate debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	[1]	2.5	6.3
Municipal bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	[1]	0.1	3.1
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	[1]	509.4	54.4
Treasury bills [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	[1]	0.0	16.4
Certificates of deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	[1]	51.0	0.0
Short-term investments	[1]	0.0	0.2
Level 1 Member
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value		509.4	70.8
Level 1 Member | Corporate debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0.0	0.0
Level 1 Member | Municipal bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0.0	0.0
Level 1 Member | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		509.4	54.4
Level 1 Member | Treasury bills [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0.0	16.4
Level 1 Member | Certificates of deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0.0	0.0
Short-term investments		0.0	0.0
Level 2 Member
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value		53.6	9.6
Level 2 Member | Corporate debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		2.5	6.3
Level 2 Member | Municipal bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0.1	3.1
Level 2 Member | Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0.0	0.0
Level 2 Member | Treasury bills [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0.0	0.0
Level 2 Member | Certificates of deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		51.0	0.0
Short-term investments		$ 0.0	$ 0.2
[1] Excludes $285.7 million and $853.9 million in cash held in our bank accounts as of December 2023 and June 2023, respectively. We did not have any financial instruments measured at fair value on a recurring basis within Level 3 fair value in this period.

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
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