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Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Plan) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Apr. 01, 2022	Mar. 31, 2023	Apr. 01, 2022
Stockholders' Equity And Stock-Based Compensation [Line Items]
Total stock-based compensation expense	$ 29,827	$ 27,699	$ 61,067	$ 60,355
Estimated benefit from income taxes	(4,497)	(4,412)	(9,199)	(9,531)
Total stock-based compensation, net of tax	25,330	23,287	51,868	50,824
Stock options
Stockholders' Equity And Stock-Based Compensation [Line Items]
Total stock-based compensation expense	2,008	2,313	4,413	5,618
Restricted stock units
Stockholders' Equity And Stock-Based Compensation [Line Items]
Total stock-based compensation expense	26,544	23,686	54,096	51,406
Share-Based Payment Arrangement, Amount Capitalized	300		700
Employee stock purchase plan
Stockholders' Equity And Stock-Based Compensation [Line Items]
Total stock-based compensation expense	$ 1,275	$ 1,700	$ 2,558	$ 3,331

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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