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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

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Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Rent expense under operating leases	$ 25,510	$ 26,594	$ 25,257
Future minimum rental payments, next twelve months	20,993
Future minimum rental payments, year 2	19,118
Future minimum rental payments, year 3	15,636
Future minimum rental payments, year 4	11,344
Future minimum rental payments, year 5	7,151
Future minimum rental payments, thereafter	41,670
Contingently liable for standby letters of credit issued	34,303
Long-term Purchase Commitment [Line Items]
Purchase Obligation	1,033,173
Property, Plant and Equipment
Long-term Purchase Commitment [Line Items]
Purchase Obligation	$ 46,660