Derivatives - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Sep. 30, 2017	Sep. 29, 2018
Derivative [Line Items]
Interest Rate Cap Agreements Aggregate Premium Payable	$ 3.7		$ 1.9
Borrowed principal	1,000.0
Loss reclassified from accumulated other comprehensive loss to the statement of income	(0.7)	$ (2.3)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	(3.7)
Interest Rate Cash Flow Hedge Asset at Fair Value	3.3			$ 7.7
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(1.7)	(0.2)
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax	3.4	$ 1.5
Notional Amount	$ 219.9