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Fair Value of Financial Instruments - Summary (Details) - USD ($) $ in Millions	Mar. 26, 2023	Jun. 26, 2022
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	$ 365.3	$ 244.3
Total short-term investments	1,453.1	749.3
Total cash equivalents and short-term investments	1,818.4	993.6
Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	596.2	448.0
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	298.6	65.8
Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	203.5	0.0
Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	187.6	162.2
U.S. agency securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	76.9	3.9
Variable rate demand notes
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	55.6	69.4
Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	34.7	0.0
Money market funds
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	208.3	115.9
U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	144.6	69.0
Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	12.4	59.4
Level 1
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	352.9	184.9
Total short-term investments	298.6	65.8
Total cash equivalents and short-term investments	651.5	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	298.6	65.8
Level 1 | Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 1 | Municipal bonds
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 | Variable rate demand notes
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 | Money market funds
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	208.3	115.9
Level 1 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total cash equivalents	144.6	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	12.4	59.4
Total short-term investments	1,154.5	683.5
Total cash equivalents and short-term investments	1,166.9	742.9
Level 2 | Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	596.2	448.0
Level 2 | U.S. treasury securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	0.0	0.0
Level 2 | Certificates of deposit
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	203.5	0.0
Level 2 | Municipal bonds
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	187.6	162.2
Level 2 | U.S. agency securities
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	76.9	3.9
Level 2 | Variable rate demand notes
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	55.6	69.4
Level 2 | Commercial paper
Assets, Fair Value Disclosure [Abstract]
Total short-term investments	34.7	0.0
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	$ 12.4	$ 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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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.

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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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-Publisher FASB
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