Commitments And Contingencies (Schedule Of Contractual Obligations And Commitments) (Details) $ in Thousands	Sep. 28, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Naming rights, Fiscal 2017	$ 7,811
Naming rights, Fiscal 2018	7,909
Naming rights, Fiscal 2019	8,008
Naming rights, Fiscal 2020	8,108
Naming rights, Fiscal 2021	8,209
Naming rights, Thereafter	78,656
Naming rights, Total	118,701
Donation commitments
Donation commitments, Fiscal 2017	8,275
Donation commitments, Fiscal 2018	297
Donation commitments, Fiscal 2019	97
Donation commitments, Fiscal 2020	97
Donation commitments, Fiscal 2021	97
Donation commitments, Thereafter	761
Donation commitments, Total	9,624
Operating leases
Operating Leases, Future Minimum Payments Due, Next Twelve Months	17,117
Operating Leases, Future Minimum Payments, Due in Two Years	14,371
Operating Leases, Future Minimum Payments, Due in Three Years	11,522
Operating Leases, Future Minimum Payments, Due in Four Years	9,967
Operating Leases, Future Minimum Payments, Due in Five Years	9,240
Operating Leases, Future Minimum Payments, Due Thereafter	19,928
Operating Leases, Future Minimum Payments Due	82,145
Purchase obligations
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	58,449
Unrecorded Unconditional Purchase Obligation, Due within Two Years	22,844
Unrecorded Unconditional Purchase Obligation, Due within Three Years	477
Unrecorded Unconditional Purchase Obligation, Due within Four Years	333
Unrecorded Unconditional Purchase Obligation, Due within Five Years	0
Unrecorded Unconditional Purchase Obligation, Due after Five Years	0
Unrecorded Unconditional Purchase Obligation	82,103
Total
Total, due in Fiscal 2017	91,652
Total, due in Fiscal 2018	45,421
Total, due in Fiscal 2019	20,104
Total, due in Fiscal 2020	18,505
Total, due in Fiscal 2021	17,546
Total, due Thereafter	99,345
Total due	$ 292,573