DERIVATIVE FINANCIAL INSTRUMENTS - Net derivative gains (losses) (Details) - USD ($) $ in Millions	12 Months Ended
	May 26, 2024	May 28, 2023	May 29, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	$ 2.9	$ (17.6)	$ 37.1
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Unrealized derivative adjustments, after-tax amount	Unrealized derivative adjustments, after-tax amount	Unrealized derivative adjustments, after-tax amount
Grocery And Snacks
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	$ (6.1)	$ 6.0	$ 17.3
Refrigerated And Frozen
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	(1.2)	9.6	17.4
International
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	(5.6)	2.5	(3.6)
Foodservice
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	(0.3)	1.4	1.6
Operating Segments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	(13.2)	19.5	32.7
Corporate, Non-Segment
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Loss)	$ 16.1	$ (37.1)	$ 4.4