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DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Lamb Weston Spinoff (Narrative) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 09, 2016 | May 27, 2018 | May 28, 2017 | May 29, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Cash payment received from Lamb West as part of the consideration for the Spinoff |  | $ 0.0 | $ 489.0 | $ 0.0
Lamb Weston | Spinoff |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Expenses incurred related to professional fees and contract services |  |  | 74.8 |
Income tax benefit recorded for adjustment of estimated deductibility |  | 14.5 |  |
Total assets transferred to Lamb Weston | $ 2,280.0 |  |  |
Total liabilities transferred to Lamb Weston | 2,980.0 |  |  |
Debt included in total liabilities transferred to Lamb Weston | 2,460.0 |  |  |
Cash payment received from Lamb West as part of the consideration for the Spinoff | $ 823.5 |  |  |
Transition services income for performance of services |  | $ 2.2 | $ 4.2 |

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