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DIVESTITURES AND ASSETS HELD FOR SALE - Divestitures (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
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Aug. 30, 2020 | Feb. 23, 2020 | Nov. 24, 2019 | Aug. 25, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Asset impairment charges | $ 3.4 |  |  | $ 67.0
Grocery & Snacks |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Asset impairment charges | $ 3.0 |  |  | 43.3
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 businesses |  | $ 33.3 |  |
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
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 businesses |  |  | $ 137.5 |
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 businesses |  | $ 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 |  |  |  | $ 11.9

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