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GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Narrative (Details) | 3 Months Ended
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Aug. 30, 2020 USD ($) segment | Aug. 25, 2019 USD ($)
Goodwill [Line Items] |  |
Fair value measurements discounted cash flow period | 5 years |
Remaining weighted average life of amortizing intangible assets | 19 years |
Amortization expense | $ 14,900,000 | $ 15,000,000.0
Average amortization annual expense in year one | 56,200,000 |
Average amortization annual expense in year two | 56,200,000 |
Average amortization annual expense in year three | 56,200,000 |
Average amortization annual expense in year four | 56,200,000 |
Average amortization annual expense in year five | $ 56,200,000 |
Minimum |  |
Goodwill [Line Items] |  |
Fair value measurement inputs terminal growth rate | 1.00% |
Sides, Components, Enhancers |  |
Goodwill [Line Items] |  |
Fair value measurement inputs discount rate | 6.25% |
Refrigerated & Frozen |  |
Goodwill [Line Items] |  |
Number of reporting units | segment | 2 |
Goodwill impairment loss | $ 0 |
Impairment charges for indefinite lived intangibles |  | 15,800,000
Refrigerated & Frozen | Sides, Components, Enhancers | Maximum |  |
Goodwill [Line Items] |  |
Percentage of fair value in excess of carrying value | 20.00% |
Refrigerated & Frozen and Grocery & Snacks | Selling, general and administrative expenses | Brands and Trademarks |  |
Goodwill [Line Items] |  |
Impairment charges for indefinite lived intangibles |  | $ 19,300,000

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