Stockholder's Equity (Share Based Compensation) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 01, 2022	Apr. 02, 2021	Apr. 01, 2022	Apr. 02, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Document Period End Date			Apr. 01, 2022
Share-based compensation expense	$ 55.7	$ 56.4	$ 106.1	$ 100.8
Cost of sales [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	6.3	12.7	14.9	19.1
Research and development [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	27.3	24.0	50.2	44.3
Selling, general and administrative [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 22.1	$ 19.7	$ 41.0	$ 37.4