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Fair Value of Financial Instruments - Summary (Details) - USD ($) $ in Millions	Jun. 25, 2023	Jun. 26, 2022
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	$ 258.1	$ 244.3
Total short-term investments	1,197.9	749.3
Total assets	1,456.0	993.6
Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	495.6	448.0
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	260.4	65.8
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	175.3	162.2
Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	112.3	0.0
U.S. agency securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	76.8	3.9
Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	50.2	0.0
Variable rate demand notes
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	27.3	69.4
Money market funds
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	230.4	115.9
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	20.7	69.0
Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	7.0	59.4
Level 1
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	251.1	184.9
Total short-term investments	260.4	65.8
Total assets	511.5	250.7
Level 1 | Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	260.4	65.8
Level 1 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | U.S. agency securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | Variable rate demand notes
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	230.4	115.9
Level 1 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	20.7	69.0
Level 1 | Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	0.0	0.0
Level 2
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	7.0	59.4
Total short-term investments	937.5	683.5
Total assets	944.5	742.9
Level 2 | Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	495.6	448.0
Level 2 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	175.3	162.2
Level 2 | Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	112.3	0.0
Level 2 | U.S. agency securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	76.8	3.9
Level 2 | Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	50.2	0.0
Level 2 | Variable rate demand notes
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	27.3	69.4
Level 2 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	0.0	0.0
Level 2 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	0.0	0.0
Level 2 | Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	$ 7.0	$ 59.4

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
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