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Investments - Schedule of Gross Unrealized Losses and Fair Value of Short-term Investments by Type and Length of Time (Details) $ in Millions | Dec. 29, 2024 USD ($) segment security | Jun. 30, 2024 USD ($) security
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 159.9 | $ 666.5
Greater than 12 Months | 137.5 | 303.6
Total | 297.4 | 970.1
Unrealized Loss |  |
Less than 12 Months | (1.0) | (0.6)
Greater than 12 Months | (3.3) | (8.7)
Total | $ (4.3) | $ (9.3)
Number of securities with an unrealized loss |  |
Less than 12 Months | security | 70 | 141
Greater than 12 Months | security | 48 | 66
Total | security | 118 | 207
Corporate bonds |  |
Fair Value |  |
Less than 12 Months | $ 100.1 | $ 135.2
Greater than 12 Months | 77.9 | 183.4
Total | 178.0 | 318.6
Unrealized Loss |  |
Less than 12 Months | (0.6) | (0.2)
Greater than 12 Months | (2.6) | (6.5)
Total | (3.2) | (6.7)
U.S. treasury securities |  |
Fair Value |  |
Less than 12 Months | 26.0 | 507.4
Greater than 12 Months | 30.6 | 35.9
Total | 56.6 | 543.3
Unrealized Loss |  |
Less than 12 Months | (0.1) | (0.4)
Greater than 12 Months | 0.0 | (0.2)
Total | (0.1) | (0.6)
Municipal bonds |  |
Fair Value |  |
Less than 12 Months | 33.8 | 9.0
Greater than 12 Months | 29.0 | 74.3
Total | 62.8 | 83.3
Unrealized Loss |  |
Less than 12 Months | (0.3) | 0.0
Greater than 12 Months | (0.7) | (2.0)
Total | (1.0) | (2.0)
U.S. agency securities |  |
Fair Value |  |
Less than 12 Months |  | 14.9
Greater than 12 Months |  | 10.0
Total |  | 24.9
Unrealized Loss |  |
Less than 12 Months |  | 0.0
Greater than 12 Months |  | 0.0
Total |  | $ 0.0
Cash and Cash Equivalents |  |
Fair Value |  |
Less than 12 Months | 14.0 |
Unrealized Loss |  |
Less than 12 Months | $ (0.1) |
Number of securities with an unrealized loss |  |
Less than 12 Months | segment | 6 |

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