Segment Information And Concentrations, Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2026	Oct. 03, 2025	Sep. 27, 2024
Segment Reporting [Line Items]
Revenue by geographic area	$ 3,959.6	$ 4,086.9	$ 4,178.0
Revenue by sales channel	3,959.6	4,086.9	4,178.0
Distributors
Segment Reporting [Line Items]
Revenue by sales channel	3,394.0	3,525.6	3,622.6
Direct customers
Segment Reporting [Line Items]
Revenue by sales channel	565.6	561.3	555.4
United States
Segment Reporting [Line Items]
Revenue by geographic area	3,023.2	3,157.1	3,202.2
Taiwan
Segment Reporting [Line Items]
Revenue by geographic area	292.9	259.1	317.5
China
Segment Reporting [Line Items]
Revenue by geographic area	254.4	254.2	303.4
Europe, Middle East, and Africa
Segment Reporting [Line Items]
Revenue by geographic area	178.9	185.8	114.5
South Korea
Segment Reporting [Line Items]
Revenue by geographic area	170.8	190.1	203.9
Other Asia-Pacific
Segment Reporting [Line Items]
Revenue by geographic area	$ 39.4	$ 40.6	$ 36.5