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The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

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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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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Restructuring and Related Cost, Number of Expected Positions Eliminated, Period Percent

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Restructuring - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Restructuring - Narrative (Details) - USD ($) $ in Millions	Jun. 28, 2026	Sep. 30, 2025	Sep. 29, 2025	Jun. 29, 2025	Jun. 30, 2024
2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of positions eliminated, period percent	28.00%
Restructuring and related cost, cost incurred	$ 457.0
Restructuring costs accrued	5.1	$ 19.2	$ 19.2	$ 30.7	$ 0.0
2025 Restructuring Plan \| Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred	73.0
Restructuring costs accrued	1.0	13.4	$ 13.4	$ 25.2	$ 0.0
2025 Restructuring Plan \| Other closure-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred	124.0
2025 Restructuring Plan \| Asset related charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred	$ 260.0
2026 Restructuring Plan, Second Quarter Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of positions eliminated, period percent	8.00%
Restructuring costs accrued	$ 0.8	0.0
2026 Restructuring Plan, Second Quarter Reduction \| Severance
Restructuring Cost and Reserve [Line Items]
Restructuring costs accrued	0.8	0.0
2026 Restructuring Plan, Fourth Quarter Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring costs accrued	$ 3.0	0.0
Restructuring and related cost expected	6.00%
2026 Restructuring Plan, Fourth Quarter Reduction \| Severance
Restructuring Cost and Reserve [Line Items]
Restructuring costs accrued	$ 3.0	$ 0.0
Restructuring and related cost, expected cost	$ 4.0