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Restructuring - Schedule of Restructuring Exit And Disposal Costs Associated With The Operational Plan (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 29, 2026	Sep. 29, 2025	Mar. 30, 2025	Mar. 29, 2026	Mar. 29, 2026	Mar. 30, 2025
2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges					$ 2.8
Impairments on abandoned assets	$ 1.7	$ 0.1	$ 30.7	$ 1.8		$ 155.2
Total	8.4	21.8	57.5	25.0		332.7
2026 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges					7.5
Inventory write-down/scrap \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	2.5	0.0	9.1		0.0
Severance \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(0.2)	0.1	7.0	0.4	0.5	58.5
Severance \| 2026 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(0.5)			7.5	7.5
Contract termination costs \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	2.3	0.0	0.0	$ 2.3	0.0
Total cost of revenue, net \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6.2	18.1	16.8	21.2		82.5
Total cost of revenue, net \| Accelerated depreciation \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	5.6	4.5	0.0		27.9
Total cost of revenue, net \| Other closure-related costs \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6.2	10.0	12.3	12.1		54.6
Restructuring and other expenses \| 2026 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total	(0.5)			7.5
Other Operating Income (Expense) \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2.2	3.7	40.7	3.8		250.2
Other Operating Income (Expense) \| Accelerated depreciation \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.0	0.0	(2.0)	0.0		10.8
Other Operating Income (Expense) \| Other closure-related costs \| 2025 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.7	$ 1.2	$ 5.0	$ 1.6		$ 25.7