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DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Lamb Weston Spinoff (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 25, 2018 | Nov. 26, 2017 | Nov. 25, 2018 | Nov. 26, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income (loss) from discontinued operations, net of tax | $ (1.9) | $ 0.4 | $ (1.9) | $ 0.1
Pre-tax gains from sales of businesses |  |  | 13.2 | 0.0
Lamb Weston | Discontinued operations, spinoff | Lamb Weston |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income tax expense related to an income tax true up | $ 2.8 |  | $ 2.8 |
Income (loss) from discontinued operations, net of tax |  |  |  | (0.2)
Pre-tax loss related to disposal of Lamb Weston business |  |  |  | 0.3
Lamb Weston | Discontinued operations, spinoff | Spinoff | Transition services agreement |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Income from transition services agreement |  | $ 0.8 |  | $ 2.1

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