OTHER GAINS AND CHARGES (Schedule of Other Gains and Charges) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2021	Sep. 23, 2020
Restructuring Cost and Reserve [Line Items]
Remodel-related costs	$ 1.5	$ 0.2
Loss from natural disasters, net of (insurance recoveries)	0.6	0.0
Enterprise system implementation	0.6	0.0
COVID-19 related charges	0.3	1.2
Restaurant closure charges	0.2	1.5
Other	1.3	0.9
Other (gains) and charges	$ 4.5	$ 3.8