Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 27, 2024	Dec. 29, 2023
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 1,068.5	$ 1,201.5
Revenue by sales channel	1,068.5	1,201.5
Distributors
Disaggregation of Revenue [Line Items]
Revenue by sales channel	950.8	1,062.9
Direct customers
Disaggregation of Revenue [Line Items]
Revenue by sales channel	117.7	138.6
United States
Disaggregation of Revenue [Line Items]
Revenue by geographic area	846.7	969.2
China
Disaggregation of Revenue [Line Items]
Revenue by geographic area	70.8	79.9
Taiwan
Disaggregation of Revenue [Line Items]
Revenue by geographic area	65.1	71.3
South Korea
Disaggregation of Revenue [Line Items]
Revenue by geographic area	48.1	45.6
Europe, Middle East, and Africa
Disaggregation of Revenue [Line Items]
Revenue by geographic area	28.2	27.1
Other Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue by geographic area	$ 9.6	$ 8.4