Commitments And Contingencies (Schedule Of Contractual Obligations And Commitments) (Details) $ in Thousands	Sep. 29, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Naming rights, Fiscal 2017	$ 7,715
Naming rights, Fiscal 2018	7,811
Naming rights, Fiscal 2019	7,909
Naming rights, Fiscal 2020	8,008
Naming rights, Fiscal 2021	8,108
Naming rights, Thereafter	86,865
Naming rights, Total	126,416
Donation commitments
Donation commitments, Fiscal 2017	255
Donation commitments, Fiscal 2018	6,300
Donation commitments, Fiscal 2019	322
Donation commitments, Fiscal 2020	122
Donation commitments, Fiscal 2021	122
Donation commitments, Thereafter	958
Donation commitments, Total	8,079
Operating leases
Operating Leases, Future Minimum Payments Due, Next Twelve Months	15,593
Operating Leases, Future Minimum Payments, Due in Two Years	12,887
Operating Leases, Future Minimum Payments, Due in Three Years	11,874
Operating Leases, Future Minimum Payments, Due in Four Years	10,210
Operating Leases, Future Minimum Payments, Due in Five Years	8,960
Operating Leases, Future Minimum Payments, Due Thereafter	25,291
Operating Leases, Future Minimum Payments Due	84,815
Purchase obligations
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	12,105
Unrecorded Unconditional Purchase Obligation, Due within Two Years	24,072
Unrecorded Unconditional Purchase Obligation, Due within Three Years	21,010
Unrecorded Unconditional Purchase Obligation, Due within Four Years	0
Unrecorded Unconditional Purchase Obligation, Due within Five Years	0
Unrecorded Unconditional Purchase Obligation, Due after Five Years	0
Unrecorded Unconditional Purchase Obligation	57,187
Total
Total, due in Fiscal 2017	35,668
Total, due in Fiscal 2018	51,070
Total, due in Fiscal 2019	41,115
Total, due in Fiscal 2020	18,340
Total, due in Fiscal 2021	17,190
Total, due Thereafter	113,114
Total due	$ 276,497