Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Apr. 01, 2022	Sep. 24, 2021
Composition Of Certain Financial Statement Captions [Abstract]
Amounts payable to patent administration program partners	$ 71,646	$ 72,847
Accrued compensation and benefits	81,475	107,322
Accrued professional fees	12,761	11,737
Unpaid property, plant, and equipment additions	15,137	17,839
Accrued customer refunds	7,947	14,151
Accrued market development funds	7,503	7,777
Other accrued liabilities	32,076	31,055
Total accrued liabilities	$ 228,545	$ 262,728

Accrual for Unpaid, Property, Plant and Equipment Additions

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Accrued Market Development Funds

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Amounts Payable To Joint Licensing Program Partners

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Composition Of Certain Financial Statement Captions [Abstract]

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Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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