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DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Other Divestitures (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Feb. 25, 2019	Feb. 24, 2019	Feb. 24, 2019	Feb. 25, 2018	May 27, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gains from sales of businesses			$ 13.2	$ 0.0
Noncurrent assets classified as held for sale		$ 159.1	159.1		$ 184.6
Del Monte \| Not discontinued operations, disposed of by sale \| Bonduelle Group \| International
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sales of businesses, net of cash included		42.4
Cash price for disposition		32.2	32.2
Pre-tax gains from sales of businesses		13.2
Del Monte \| Held-for-sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets classified as held for sale					11.5
Wesson \| Held-for-sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets classified as held for sale		104.2	104.2		101.0
Other long-lived assets \| Held-for-sale, not discontinued operations \| Corporate
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets classified as held for sale		$ 11.6	$ 11.6		$ 29.4
Subsequent Event \| Wesson \| Held-for-sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sales of businesses, net of cash included	$ 167.1