Derivatives - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss recognized in other comprehensive income, net of taxes:	$ (4.7)	$ (2.1)	$ (25.9)	$ (7.5)
Changes in value of hedged interest rate swaps and interest rate caps, net of tax of $(1.5) and $(7.9) for the three and nine months ended June 27, 2020 and $0.4 and $1.2 for the three and nine months ended June 29, 2019.	(4.7)	(2.1)	(25.9)	(7.5)
Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss recognized in other comprehensive income, net of taxes:	(4.6)	0.0	(25.4)	0.0
Interest rate cap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Changes in value of hedged interest rate swaps and interest rate caps, net of tax of $(1.5) and $(7.9) for the three and nine months ended June 27, 2020 and $0.4 and $1.2 for the three and nine months ended June 29, 2019.	$ (0.1)	$ (2.1)	$ (0.5)	$ (7.5)