REVENUE RECOGNITION (Remaining Deferred Franchise and Development Fees to be Recognized) (Details) $ in Millions	Dec. 23, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 11.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-12-24
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 0.5
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 1.0
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-06-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 1.0
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-06-29
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 1.0
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-06-27
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 0.9
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-06-26
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining deferred franchise and development fees to be recognized	$ 7.5
Remaining deferred franchise and development fees to be recognized, expected timing of satisfaction in years	16 years