Stockholders' Equity and Stock Compensation Plans - ESPP Summary (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from exercise of purchase rights	$ 11,250	$ 10,334	$ 11,751
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased (in shares)	124	168	148
Weighted-average purchase price per share (in dollars per share)	$ 86.16	$ 51.77	$ 46.38
Cash received from exercise of purchase rights	$ 10,705	$ 8,715	$ 6,844

Amount of cash inflow from exercise of option under share-based payment arrangement.

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Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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