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Stock-Based Compensation - Narrative (Details) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 29, 2025 USD ($)	Jun. 28, 2026 USD ($) shares	Jun. 28, 2026 USD ($) purchasePeriod compensationPlan shares	Jun. 29, 2025 USD ($)	Jun. 30, 2024 USD ($)
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, maximum employee subscription rate		15.00%	15.00%
Employee stock plan purchase price of fair value (as a percent)			15.00%
Duration of participation period			12 months
Number of purchase periods \| purchasePeriod			2
Duration of purchase periods			6 months
Discount from market price, beginning of participation period or purchase date (as a percent)			15.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value \| $	$ 1.9	$ 4.2		$ 13.1	$ 55.2
Unrecognized compensation cost (less than) \| $		$ 73.5	$ 73.5
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition			2 years 2 months 4 days
2025 Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity-based compensation plans \| compensationPlan			2
2025 Long-Term Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized for issuance (shares)		4.1	4.1
For future issuance (shares)		3.1	3.1
2025 Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized for issuance (shares)		8.1	8.1
For future issuance (shares)		5.3	5.3
2023 Long-Term Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity-based compensation plans \| compensationPlan			2