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DIVESTITURES AND ASSETS HELD FOR SALE - Divestitures (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended					6 Months Ended
	Dec. 07, 2020	Nov. 29, 2020	Aug. 30, 2020	Feb. 23, 2020	Nov. 24, 2019	Aug. 25, 2019	Nov. 29, 2020	Nov. 24, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business							$ 8.6	$ 139.0
Gain from sales of businesses							5.3	(1.5)
Asset impairment charges							$ 3.9	105.9
Refrigerated & Frozen
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges					$ 27.6
Grocery & Snacks
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges			$ 3.0		11.1			54.4
H.K. Anderson Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business		$ 8.5
H.K. Anderson Business \| Selling, general and administrative expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain from sales of businesses		$ 5.3
Lender's Bagel Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business				$ 33.3
Lender's Bagel Business \| Selling, general and administrative expenses \| Refrigerated & Frozen
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges					27.6
Peanut Butter Manufacturing Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business				$ 24.8
Peanut Butter Manufacturing Facility \| Selling, general and administrative expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges					11.1			$ 23.0
DSD Snacks Business \| Grocery & Snacks
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business					$ 137.5
DSD Snacks Business \| Selling, general and administrative expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset impairment charges						$ 31.4
Peter Pan Peanut Butter Business \| Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash proceeds from sales of business	$ 102.0