FAIR VALUE MEASUREMENTS (Narrative) (Details) $ in Millions	12 Months Ended
	May 26, 2024 USD ($) restaurant	May 28, 2023 USD ($) restaurant
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of long-term debt	$ 1,370.4	$ 884.9
Debt instrument, fair value disclosure	1,370.0	857.0
Carrying amount of long-lived assets held and used	4,184.3	3,725.1
Significant Unobservable Inputs (Level 3) | Underperforming Restaurants
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amount of long-lived assets held and used	$ 4.8	$ 10.0
Number of impaired restaurants | restaurant	3	1
Assets held-for-sale, long-lived, fair value	$ 1.5	$ 8.4
Asset impairment	$ 3.3	$ 1.6