DERIVATIVE FINANCIAL INSTRUMENTS - Net derivative gains (losses) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Feb. 22, 2026	Feb. 23, 2025	Feb. 22, 2026	Feb. 23, 2025
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	$ 1.1	$ 8.0	$ (1.4)	$ 12.0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Goods and Services Sold	Cost of Goods and Services Sold	Cost of Goods and Services Sold	Cost of Goods and Services Sold
Grocery & Snacks
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	$ 1.4	$ (1.3)	$ 4.3	$ (5.4)
Refrigerated & Frozen
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	(1.2)	(1.1)	(0.8)	(3.4)
International
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	(1.9)	2.9	(4.3)	4.2
Food service
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	0.1	(0.2)	0.3	(0.7)
Operating Segments
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	(1.6)	0.3	(0.5)	(5.3)
Corporate, Non-Segment
DERIVATIVE FINANCIAL INSTRUMENTS
Gross derivative gains (losses) incurred	$ 2.7	$ 7.7	$ (0.9)	$ 17.3

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

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Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E

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