Derivatives - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018	Sep. 29, 2018	Sep. 30, 2017
Derivative [Line Items]
Interest Rate Cap Agreements Aggregate Premium Payable	$ 1.5		$ 1.5	$ 0.0	$ 3.7	$ 1.9
Borrowed principal	1,000.0		1,000.0
Loss reclassified from accumulated other comprehensive loss to the statement of income	(0.5)	$ (0.3)	(1.2)	(2.6)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred			(3.6)
Interest Rate Cash Flow Hedge Asset at Fair Value	2.9		2.9		$ 7.7
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(1.8)	(2.1)	(3.5)	(2.3)
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax	1.4	$ 1.7	2.0	$ 0.2
Notional Amount	$ 150.7		$ 150.7