Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 02, 2021	Mar. 27, 2020	Apr. 02, 2021	Mar. 27, 2020
Income Statement [Abstract]
Document Period End Date			Apr. 02, 2021
Net revenue	$ 1,171.8	$ 766.1	$ 2,681.8	$ 1,662.2
Cost of goods sold	593.4	390.5	1,341.7	842.3
Gross profit	578.4	375.6	1,340.1	819.9
Operating expenses:
Research and development	130.7	113.2	252.3	220.8
Selling, general, and administrative	70.2	58.6	136.9	114.0
Amortization of intangibles	2.8	3.1	5.5	6.3
Restructuring Costs and Asset Impairment Charges	0.0	1.2	0.0	2.0
Total operating expenses	203.7	176.1	394.7	343.1
Operating income	374.7	199.5	945.4	476.8
Other income, net	0.8	3.5	0.9	4.9
Income before income taxes	375.5	203.0	946.3	481.7
Provision for income taxes	50.5	21.9	112.0	43.6
Net income	$ 325.0	$ 181.1	$ 834.3	$ 438.1
Earnings per share:
Basic (in dollars per share)	$ 1.97	$ 1.07	$ 5.05	$ 2.58
Diluted (in dollars per share)	$ 1.95	$ 1.06	$ 5.00	$ 2.56
Weighted average shares:
Basic (in shares)	165.0	170.0	165.2	170.1
Diluted (in shares)	166.8	171.1	166.9	171.3
Common Stock, Dividends, Per Share, Declared	$ 0.50	$ 0.44	$ 1.00	$ 0.88