Summary of Significant Accounting Policies - Schedule of Derivative Instruments in Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 24, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of realized gain (loss) recognized in income	$ 3.9	$ (2.7)	$ 68.5
Amount of unrealized (loss) gain recognized in income	(20.1)	(13.0)	20.2
Amount of gain (loss) recognized in income	(16.2)	(15.7)	88.7
Forward foreign currency contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of realized gain (loss) recognized in income	3.9	1.3	68.5
Amount of unrealized (loss) gain recognized in income	(20.9)	(7.5)	14.7
Foreign currency option contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of realized gain (loss) recognized in income	0.0	(4.0)	0.0
Amount of unrealized (loss) gain recognized in income	$ 0.8	$ (5.5)	$ 5.5