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Equity - Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Jul. 03, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation	$ 24.8	$ 19.5
Income tax benefit associated with stock-based compensation	4.0	5.3
Stock-based compensation capitalized to inventory	4.9		$ 4.6
PSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation	4.7	3.1
Cost of sales
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation	4.6	3.7
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation	5.0	4.4
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation	$ 15.2	$ 11.4