OTHER GAINS AND CHARGES (Schedule of Other Gains and Charges) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 23, 2020 USD ($) Restaurants	Dec. 25, 2019 USD ($)	Dec. 23, 2020 USD ($) Restaurants	Dec. 25, 2019 USD ($) Restaurants		Sep. 05, 2019 Restaurants
Restructuring Cost and Reserve [Line Items]
Restaurant impairment charges	$ 2.5	$ 4.6	$ 2.5	$ 4.6
COVID-19 related charges	1.0	0.0	2.2	0.0
Restaurant closure charges	0.4	2.9	1.9	3.1
Remodel-related costs	0.7	0.8	0.9	1.5
Lease modification gain, net	0.0	0.0	(0.5)	(3.1)
Acquisition of franchise restaurants costs, net	0.0	2.0	0.0	1.5
Other	0.8	2.0	2.2	3.8
Other (gains) and charges	$ 5.4	12.3	$ 9.2	11.4
Number of restaurants | Restaurants	1,655		1,655
Chili's restaurant acquisition [Member]
Restructuring Cost and Reserve [Line Items]
Acquisition of franchise restaurants costs, net		2.0		1.5
Number of restaurants | Restaurants						116
Chili's Restaurants [Member]
Restructuring Cost and Reserve [Line Items]
Other (gains) and charges	$ 4.4	10.6	$ 8.0	$ 9.0	[1]
Number of underperforming restaurants | Restaurants			10	10
Maggiano's Restaurants [Member]
Restructuring Cost and Reserve [Line Items]
Other (gains) and charges	$ 0.8	$ 0.0	$ 0.9	$ 0.1
Number of underperforming restaurants | Restaurants			3

[1] Chili’s segment information for fiscal 2020 includes the results of operations related to the 116 restaurants purchased from a former franchisee subsequent to the September 5, 2019 acquisition date. Refer to Note 15 - Fiscal 2020 Chili’s Restaurant Acquisition for details.