OTHER GAINS AND CHARGES (Schedule of Other Gains and Charges) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 23, 2020	Sep. 25, 2019
Restructuring Cost and Reserve [Line Items]
Restaurant closure charges	$ 1.5	$ 0.2
COVID-19 related charges	1.2	0.0
Remodel-related costs	0.2	0.7
Lease modification gain, net	(0.5)	(3.1)
Other	1.4	1.3
Other (gains) and charges	$ 3.8	$ (0.9)