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Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Non-Operating Expense (Income), Net (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 29, 2025 | Jun. 30, 2024 | Jun. 25, 2023
Accounting Policies [Abstract] |  |  |
Interest income | $ (67.6) | $ (135.0) | $ (58.2)
Loss (gain) on legal proceedings | 0.0 | 0.0 | (50.3)
Unrealized gain on equity investment | (22.6) | (18.5) | 0.0
Loss on Wafer Supply Agreement | 9.2 | 25.3 | 13.6
Loss on customs matter | 0.0 | 7.7 | 0.0
Write-off of deferred financing costs | 54.7 | 0.0 | 0.0
Other expense, net | 0.8 | 1.4 | 0.3
Non-operating income, net | $ (25.5) | $ (119.1) | $ (94.6)

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