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RESTRUCTURING ACTIVITIES (Details) - USD ($) $ in Millions	12 Months Ended			95 Months Ended
RESTRUCTURING ACTIVITIES (Details) - USD ($) $ in Millions	May 31, 2026	May 25, 2025	May 26, 2024	May 31, 2026	May 24, 2026
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	$ 356.1			$ 356.1
Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	356.7			356.7
Restructuring plan charges	32.3	$ 101.7	$ 66.6	353.5
Restructuring plan expected cash outflow	26.0				$ 118.9
Restructuring plan expected non-cash charges	6.3
Restructuring and related cost expected, non-cash charges					$ 234.6
Costs incurred and charged to expense	34.0
Conagra Restructuring Plan \| Cash charges
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	121.9			121.9
Conagra Restructuring Plan \| Non-cash charges
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	234.8			234.8
Optimization Initiatives
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	34.0			34.0
Restructuring and related cost during the period	13.4
Optimization Initiatives \| Cash charges
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	12.0			12.0
Asset Write-Off \| Optimization Initiatives
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	12.0			12.0
Accelerated depreciation \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	91.6			91.6
Restructuring plan charges				91.6
Accelerated depreciation \| Optimization Initiatives
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	$ 22.0			$ 22.0