Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 02, 2026	Dec. 27, 2024
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 1,035.4	$ 1,068.5
Revenue by sales channel	1,035.4	1,068.5
Distributors
Disaggregation of Revenue [Line Items]
Revenue by sales channel	915.6	950.8
Direct customers
Disaggregation of Revenue [Line Items]
Revenue by sales channel	119.8	117.7
United States
Disaggregation of Revenue [Line Items]
Revenue by geographic area	805.7	846.7
Taiwan
Disaggregation of Revenue [Line Items]
Revenue by geographic area	71.8	65.1
China
Disaggregation of Revenue [Line Items]
Revenue by geographic area	63.1	70.8
South Korea
Disaggregation of Revenue [Line Items]
Revenue by geographic area	43.7	48.1
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Revenue by geographic area	41.3	28.2
Other Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 9.8	$ 9.6