Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands		Mar. 25, 2023	Sep. 24, 2022
Finite Lived Intangible Assets [Line Items]
Other intangible assets, gross		$ 616,846	$ 568,822
Accumulated amortization		(533,943)	(528,820)
Other intangible assets, net		82,903	40,002
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Other intangible assets, gross	[1]	569,589	526,665
Accumulated amortization		(497,464)	(492,968)
Non-compete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Other intangible assets, gross		40,190	40,190
Accumulated amortization		(34,569)	(34,137)
Other [Member]
Finite Lived Intangible Assets [Line Items]
Other intangible assets, gross	[1]	7,067	1,967
Accumulated amortization		$ (1,910)	$ (1,715)

[1] (1) Reflects the impact of the acquisition; see Note 4, “Investments in and Acquisitions of Businesses.”