Revenue - Geographical Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 24, 2022
Disaggregation of Revenue [Line Items]
Total revenues:	$ 4,030.3	$ 4,030.4	$ 4,862.8
United States
Disaggregation of Revenue [Line Items]
Total revenues:	3,024.1	3,058.0	3,467.9
Europe
Disaggregation of Revenue [Line Items]
Total revenues:	532.7	520.3	888.5
Asia-Pacific
Disaggregation of Revenue [Line Items]
Total revenues:	259.6	255.7	359.7
Rest of World
Disaggregation of Revenue [Line Items]
Total revenues:	$ 213.9	$ 196.4	$ 146.7