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GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Aug. 25, 2019 | May 31, 2020 | May 26, 2019 | May 27, 2018 | Oct. 26, 2018
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  | $ 11,436,300,000 | $ 11,435,400,000 | $ 4,477,100,000 |
Fair value measurements discounted cash flow period |  | 5 years |  |  |
Remaining weighted average life of amortizing intangible assets |  | 20 years |  |  |
Amortization expense recognized |  | $ 59,800,000 | 49,100,000 | 34,900,000 |
Held for sale | DSD Snacks Business |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  | 64,200,000 |  |  |
Other identifiable intangible assets |  | 122,100,000 |  |  |
Minimum |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs terminal growth rate | 1.00% |  |  |  |
Maximum |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs terminal growth rate | 2.00% |  |  |  |
Domestic Reporting Units |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs discount rate | 7.00% |  |  |  |
International Reporting Units | Minimum |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs discount rate | 8.00% |  |  |  |
International Reporting Units | Maximum |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs discount rate | 11.00% |  |  |  |
One International Reporting Unit |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Fair value measurement inputs terminal growth rate | 3.00% |  |  |  |
Three Reporting Units |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | $ 3,490,000,000 |  |  |  |
Grocery & Snacks |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  | 4,744,800,000 | 4,741,300,000 | 2,582,500,000 |
Impairment charges for indefinite lived intangibles |  | 46,400,000 | 76,500,000 | 4,000,000.0 |
Refrigerated & Frozen |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  | 5,648,300,000 | 5,642,400,000 | 1,080,600,000 |
Impairment charges for indefinite lived intangibles |  | 110,800,000 |  |  |
International |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  | 290,500,000 | 299,000,000.0 | 242,900,000 |
Impairment charges for indefinite lived intangibles |  |  | 13,100,000 | 800,000 |
Foodservice |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 752,700,000 | 752,700,000 | $ 752,700,000 | $ 571,100,000 |
Refrigerated & Frozen and Grocery & Snacks | Selling, general and administrative expenses | Brands and Trademarks |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Impairment charges for indefinite lived intangibles | 19,300,000 | 146,200,000 |  |  |
Pinnacle Foods Inc. (Pinnacle) |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill |  |  |  |  | $ 7,026,000,000.0
Impairment of goodwill |  | $ 0 |  |  |
Pinnacle Foods Inc. (Pinnacle) | Grocery & Snacks |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 2,190,000,000 |  |  |  |
Pinnacle Foods Inc. (Pinnacle) | Refrigerated & Frozen |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 4,580,000,000 |  |  |  |
Pinnacle Foods Inc. (Pinnacle) | International |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | 58,500,000 |  |  |  |
Pinnacle Foods Inc. (Pinnacle) | Foodservice |  |  |  |  |
Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |  |  |
Goodwill | $ 181,600,000 |  |  |  |

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