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Acquisitions (Details) SFr / shares in Units, SFr in Millions, $ in Millions	3 Months Ended
	Dec. 27, 2024 USD ($) item	Dec. 29, 2023 USD ($)	Dec. 29, 2023 CHF (SFr) SFr / shares
Acquisitions
Net cash paid	$ 325	$ 349
Fiscal 2025 Acquisitions
Acquisitions
Number of businesses acquired | item	2
Net cash paid	$ 325
Schaffner Holding AG
Acquisitions
Net cash paid		$ 349	SFr 302
Percentage of voting interest acquired			98.70%
Per share value of the purchase (in dollars per share) | SFr / shares			SFr 505

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-Topic 805
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-Section 50
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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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