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The total number of new claims filed pertaining to a loss contingency during the period.

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Commitments and Contingencies - Narrative (Details) $ in Millions			3 Months Ended			6 Months Ended
	Sep. 29, 2025 USD ($)	Jan. 08, 2025 lawsuit	Dec. 28, 2025 USD ($)	Sep. 29, 2025 USD ($)	Dec. 29, 2024 USD ($)	Dec. 28, 2025 USD ($)	Dec. 29, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jun. 25, 2023 USD ($)
Loss Contingencies [Line Items]
Loss contingency, number of additional lawsuits \| lawsuit		2
Approvals Obtained \| Renesas
Loss Contingencies [Line Items]
Restructuring support agreement, cash remitted or retained by company	$ 10.0			$ 10.0
Purchase Commitment 2023
Loss Contingencies [Line Items]
Purchase commitment, amount committed									$ 200.0
Current purchases under agreement	0.0		$ 2.3	4.4	$ 5.8	$ 6.7	$ 12.5
Product purchases remainder of fiscal year			32.2			32.2
Product purchases year one			38.0			38.0
Product purchases year two			40.0			40.0
Product purchases year three			42.0			42.0
Capacity reserve deposit			60.0			60.0
Prepaid supplies			60.0			60.0
Purchase Commitment 2024
Loss Contingencies [Line Items]
Purchase commitment, amount committed								$ 86.4
Current purchases under agreement	$ 0.0		12.0	$ 7.2	$ 7.2		$ 14.4
Product purchases remainder of fiscal year			12.0			12.0
Product purchases year one			9.6			9.6
Electricity For Siler City, North Carolina Facilities
Loss Contingencies [Line Items]
Purchase commitment, amount committed			58.9			$ 58.9
Purchase commitment, period						4 years
Electricity For Durham, North Carolina Facilities
Loss Contingencies [Line Items]
Purchase commitment, amount committed			$ 24.0			$ 24.0
Purchase commitment, period						8 years