REVENUE RECOGNITION (Deferred Gift Card Revenues) (Details) $ in Millions	9 Months Ended
	Mar. 24, 2021 USD ($)
Deferred Gift Card Liability Rollforward [Roll Forward]
Balance as of June 24, 2020	$ 109.9
Balance as of March 24, 2021	110.9
Gift card sales
Deferred Gift Card Liability Rollforward [Roll Forward]
Increase in Gift card liability	88.6
Gift card redemptions
Deferred Gift Card Liability Rollforward [Roll Forward]
Gift card redemptions recognized to Company sales	(79.8)
Gift card breakage
Deferred Gift Card Liability Rollforward [Roll Forward]
Gift card breakage recognized to Franchise and other revenues	(8.0)
Gift card other
Deferred Gift Card Liability Rollforward [Roll Forward]
Increase in Gift card liability	0.2
Deferred Franchise and Development Fees
Deferred Gift Card Liability Rollforward [Roll Forward]
Gift card breakage recognized to Franchise and other revenues	$ (1.3)