INCOME TAXES (Provision For Income Taxes From Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 24, 2020	Jun. 26, 2019	Jun. 27, 2018
Current income tax (benefit) expenses:
Federal	$ (32.9)	$ 63.3	$ 28.7
State	4.8	28.8	12.2
Foreign	0.0	0.6	0.0
Total current income tax (benefit) expenses	(28.1)	92.7	40.9
Deferred income tax (benefit) expenses:
Federal	8.8	(58.5)	6.6
State	(0.2)	(18.0)	0.1
Foreign	0.0	0.7	(3.3)
Total deferred income tax (benefit) expenses	8.6	(75.8)	3.4
Provision (benefit) for income taxes	$ (19.5)	$ 16.9	$ 44.3
Effective tax rate	(398.00%)	9.80%	26.00%