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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

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Percentage of fair value of reporting unit in excess of carrying amount.

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Goodwill And Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 28, 2018	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill decrease from divestiture		$ (61,707)
Amortization of intangible assets		117,000	$ 112,100	$ 87,900
Food and Support Services - International
Finite-Lived Intangible Assets [Line Items]
Goodwill, fair value		282,300
Goodwill decrease from divestiture		16,135
Customer relationship assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 28,500	887,500
Weighted-average estimated useful life (in years)		14 years
Customer relationship assets \| Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life		9 years
Customer relationship assets \| Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life		24 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired		$ 4,400	$ 246,000
Healthcare Technologies
Finite-Lived Intangible Assets [Line Items]
Goodwill decrease from divestiture	$ 87,000
Goodwill
Finite-Lived Intangible Assets [Line Items]
Percentage of fair value in excess of carrying amount		22.00%