Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net revenue	$ 1,046.0	$ 1,153.1	$ 2,247.5	$ 2,482.4
Cost of goods sold	625.7	625.7	1,320.7	1,317.4
Gross profit	420.3	527.4	926.8	1,165.0
Operating expenses:
Research and development	154.4	148.2	307.3	312.0
Selling, general, and administrative	76.8	79.0	155.5	163.5
Amortization of intangibles	0.2	3.8	0.5	25.7
Restructuring, impairment, and other charges (benefits)	(0.3)	23.1	15.9	23.5
Total operating expenses	231.1	254.1	479.2	524.7
Operating income	189.2	273.3	447.6	640.3
Interest expense	(7.1)	(18.9)	(17.1)	(35.8)
Other income, net	10.8	5.4	14.1	6.0
Income before income taxes	192.9	259.8	444.6	610.5
Provision for income taxes	9.6	27.0	30.0	68.3
Net income	$ 183.3	$ 232.8	$ 414.6	$ 542.2
Earnings per share:
Basic (in dollars per share)	$ 1.14	$ 1.46	$ 2.59	$ 3.40
Net income per share - diluted (in dollars per share)	$ 1.14	$ 1.46	$ 2.57	$ 3.39
Weighted average shares:
Basic (in shares)	160.4	159.1	160.1	159.5
Diluted (in shares)	161.4	159.9	161.3	160.1
Common stock, dividends declared (in dollars per share)	$ 0.68	$ 0.62	$ 1.36	$ 1.24