Debt - Schedule of Interest Costs Capitalized (Details) - Convertible Notes - Capacity Expansions - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 29, 2025	Jun. 28, 2026	Jun. 29, 2025	Jun. 30, 2024
Debt Instrument [Line Items]
Interest expense capitalized	$ 0.0	$ 0.0	$ 72.4	$ 28.3
Amortization of discount and debt issuance costs capitalized	0.0	0.0	13.5	3.6
Total interest expense capitalized	$ 0.0	$ 0.0	$ 85.9	$ 31.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details