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Business Segments and Geographic Information - Additional Information (Detail)	12 Months Ended
	Sep. 25, 2021 USD ($) Segment	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)
Segment Reporting Disclosure [Line Items]
Revenues	$ 5,632,300,000	$ 3,776,400,000	$ 3,367,300,000
Intersegment
Segment Reporting Disclosure [Line Items]
Number of reportable segments | Segment	4
Revenues	$ 0	$ 0	$ 0

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Segment Reporting Disclosure [Line Items]

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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