Commitments And Contingencies (Schedule Of Contractual Obligations And Commitments) (Details) $ in Thousands	12 Months Ended
Sep. 24, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Naming rights, Fiscal 2021	$ 8,015
Naming rights, Fiscal 2022	8,116
Naming rights, Fiscal 2023	8,219
Naming rights, Fiscal 2024	8,322
Naming rights, Fiscal 2025	8,428
Naming rights, Thereafter	52,849
Naming rights, Total	93,949
Purchase obligations
Purchase Obligation, Fiscal 2021	17,108
Purchase Obligation, Fiscal 2022	2,123
Purchase Obligation, Fiscal 2023	979
Purchase Obligation, Fiscal 2024	0
Purchase Obligation, Fiscal 2025	0
Purchase Obligation, Thereafter	0
Unrecorded Unconditional Purchase Obligation	20,210
Donation commitments
Donation commitments, Fiscal 2021	3,462
Donation commitments, Fiscal 2022	44
Donation commitments, Fiscal 2023	44
Donation commitments, Fiscal 2024	44
Donation commitments, Fiscal 2025	44
Donation commitments, Thereafter	71
Donation commitments, Total	3,709
Total
Total, due in Fiscal 2021	28,585
Total, due in Fiscal 2022	10,283
Total, due in Fiscal 2023	9,242
Total, due in Fiscal 2024	8,366
Total, due in Fiscal 2025	8,472
Total, due Thereafter	52,920
Total due	$ 117,868
Naming Rights
Other Commitments [Line Items]
Term of agreement	20 years
Donation Commitments
Other Commitments [Line Items]
Term of agreement	15 years

Total operating leases and purchase obligations due.

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Total operating leases and purchase obligations due in five years.

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Total operating leases and purchase obligations due in four years.

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Total operating leases and purchase obligations due in three years.

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Total operating leases and purchase obligations due in two years.

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Total operating leases and purchase obligations due thereafter.

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Total operating leases and purchase obligations due within one year.

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Unrecorded Unconditional Donation Obligation

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Unrecorded Unconditional Donation Obligation, Due after Five Years

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Unrecorded Unconditional Donation Obligation, Due in Next Twelve Months

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Unrecorded Unconditional Donation Obligation, Due within Five Years

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Unrecorded Unconditional Donation Obligation, Due within Four Years

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Unrecorded Unconditional Donation Obligation, Due within Three Years

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Unrecorded Unconditional Donation Obligation, Due within Two Years

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Unrecorded Unconditional Obligation, Balance on Fifth Anniversary

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Unrecorded Unconditional Obligation, Balance on Fourth Anniversary

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Unrecorded Unconditional Obligation, Balance on Second Anniversary

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Unrecorded Unconditional Obligation, Balance on Third Anniversary

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Unrecorded Unconditional Obligation, Balance Sheet Amount

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Unrecorded Unconditional Obligation Balance on First Anniversary

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Unrecorded Unconditional Obligation, Due After Five Years

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Unrecorded Unconditional Obligation, Term of Agreement

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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