CONTINGENCIES (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Aug. 24, 2025	Aug. 24, 2025	May 25, 2025	May 31, 2020
CONTINGENCIES
Insurance Settlements Receivable	$ 16.7	$ 16.7	$ 81.8
Threshold amount for Environmental Matters		1.0
Threatened Litigation
CONTINGENCIES
Loss contingency accrual	151.4	151.4	204.5
Settled Litigation
CONTINGENCIES
Loss contingency accrual	16.7	16.7
Litigation settlement amount				$ 101.7
Accounts Receivable
CONTINGENCIES
Insurance Settlements Receivable			78.4
Noncurrent Assets
CONTINGENCIES
Insurance Settlements Receivable			3.4
Other accrued liabilities | Threatened Litigation
CONTINGENCIES
Loss contingency accrual			160.2
Other noncurrent liabilities | Threatened Litigation
CONTINGENCIES
Loss contingency accrual			44.3
Beatrice
CONTINGENCIES
Accrual for environmental loss contingencies	35.4	35.4	36.0
Beatrice | Other accrued liabilities
CONTINGENCIES
Accrual for environmental loss contingencies	$ 3.2	$ 3.2	$ 3.2
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Beatrice | Other noncurrent liabilities
CONTINGENCIES
Accrual for environmental loss contingencies	$ 32.2	$ 32.2	$ 32.8
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Reese V Conagra Brands Inc
CONTINGENCIES
Loss contingency accrual payments		$ 52.5	$ 25.0
Reese V Conagra Brands Inc | Scenario, Plan [Member]
CONTINGENCIES
Litigation settlement amount	$ 132.8