FAIR VALUE MEASUREMENTS (Non-Financial Assets Measured on a Non-Recurring Basis) (Details) $ in Millions	3 Months Ended				9 Months Ended
	Mar. 25, 2020 USD ($) Restaurant	Dec. 25, 2019 USD ($)	Mar. 27, 2019 USD ($)	Dec. 26, 2018 USD ($)	Mar. 25, 2020 USD ($) Restaurant	Mar. 27, 2019 USD ($) Restaurant	Sep. 05, 2019 restaurant	Jun. 26, 2019 USD ($)
Schedule of Impairments [Line Items]
Restaurant impairment charges	$ 0.0		$ 0.0		$ 4.6	$ 1.0
Additional Fair Value Elements [Abstract]
Accumulated amortization on definite-lived intangible assets	$ 7.1				$ 7.1			$ 7.0
Number of restaurants | Restaurant	1,675				1,675
Chili's restaurant acquisition [Member]
Additional Fair Value Elements [Abstract]
Number of restaurants | restaurant							116
Chili's Restaurants [Member]
Fair Value Measurements, Nonrecurring Value Measurement [Abstract]
Number of underperforming restaurants | Restaurant					10	2
Underperforming Restaurants [Member]
Schedule of Impairments [Line Items]
Carrying value of impaired long lived assets		$ 4.5		$ 1.0
Carrying value of impaired finance lease assets		0.1		0.0
Total carrying value of impaired assets of underperforming restaurants		4.6		1.0
Impairment of long-lived assets held-for-use					$ 4.5	$ 1.0
Impairment amount of finance lease					0.1	0.0
Restaurant impairment charges					4.6	1.0
Closed Restaurants [Member]
Schedule of Impairments [Line Items]
Carrying value of impaired operating lease assets		6.4		0.0
Carrying value of impaired finance lease assets		5.8		0.0
Total carrying value of impaired assets of closed restaurants		$ 12.2		$ 0.0
Impairment amount of operating lease assets					1.8	0.0
Impairment amount of finance lease					1.4	0.0
Closed restaurant impairment charges					$ 3.2	$ 0.0