Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 28, 2025	Mar. 29, 2024	Mar. 28, 2025	Mar. 29, 2024
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 953.2	$ 1,046.0	$ 2,021.7	$ 2,247.5
Revenue by sales channel	953.2	1,046.0	2,021.7	2,247.5
Distributors
Disaggregation of Revenue [Line Items]
Revenue by sales channel	833.2	914.7	1,784.1	1,977.9
Direct customers
Disaggregation of Revenue [Line Items]
Revenue by sales channel	120.0	131.3	237.6	269.6
United States
Disaggregation of Revenue [Line Items]
Revenue by geographic area	712.6	795.1	1,571.0	1,764.3
China
Disaggregation of Revenue [Line Items]
Revenue by geographic area	64.6	76.9	128.9	156.8
Taiwan
Disaggregation of Revenue [Line Items]
Revenue by geographic area	72.9	74.1	119.9	145.4
South Korea
Disaggregation of Revenue [Line Items]
Revenue by geographic area	46.3	59.7	94.5	105.2
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Revenue by geographic area	47.1	29.2	88.7	56.3
Other Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 9.7	$ 11.0	$ 18.7	$ 19.5