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DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 28, 2016 | May 29, 2016 | Feb. 28, 2016 | Nov. 29, 2015 | Aug. 30, 2015 | May 31, 2015 | Feb. 22, 2015 | Aug. 24, 2014 | May 25, 2014 | Nov. 24, 2013 | Feb. 24, 2013 | Nov. 23, 2014 | May 29, 2016 | May 31, 2015 | May 25, 2014 | Nov. 01, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  |  |  |  |  |  |  |  |  | $ 62.6 | $ 36.0 | $ 118.9 |
Gain (loss) on extinguishment of debt |  |  | $ (23.9) |  |  |  |  |  |  |  |  |  | (23.9) | (24.6) | 4.0 |
Deferred tax assets, net |  | $ 2,368.2 |  |  |  | $ 603.8 |  |  |  |  |  |  | 2,368.2 | 603.8 |  |
Impairment, goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.9 |  |
Net sales |  | 2,827.5 | 2,924.1 | $ 3,095.1 | $ 2,796.2 | 3,125.5 | $ 2,907.3 | $ 2,765.5 |  |  |  | $ 3,138.7 | 11,642.9 | 11,937.0 | 11,838.2 |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  | 225.4 | 362.1 | 178.3 |
Noncurrent assets held for sale |  | 225.8 |  |  |  | 4,486.0 |  |  |  |  |  |  | 225.8 | 4,486.0 |  |
Private Brands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, including discontinued operation, consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,600.0
Asset impairment charges |  |  |  |  |  |  |  |  |  |  |  |  | 1,920.0 |  |  |
Asset impairment charges, after tax |  |  |  |  |  |  |  |  |  |  |  |  | 1,440.0 |  |  |
Deferred tax assets, net |  |  | 1,540.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in valuation allowance |  | (20.7) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment, goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,510.0 | 593.2 |
Impairment of long-lived assets to be disposed of |  |  |  |  |  |  |  |  |  |  |  |  |  | 57.6 | 3.0 |
Income (loss) from operation of discontinued operations before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (1,755.0) | (1,495.8) | (409.7) |
Noncurrent assets held for sale |  |  |  |  |  | 4,246.9 |  |  |  |  |  |  |  | 4,246.9 |  |
Spicetec and JM Swank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in valuation allowance |  | (147.3) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Spicetec |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent assets held for sale |  | 145.9 |  |  |  | 148.2 |  |  |  |  |  |  | 145.9 | 148.2 |  |
JM Swank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent assets held for sale |  | 73.0 |  |  |  | 74.3 |  |  |  |  |  |  | 73.0 | 74.3 |  |
Medallion |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.0 |
Pretax gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.8 |
After-tax gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.5 |
Goodwill and intangible asset impairment, before tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.4 |
Goodwill and intangible asset impairment, after tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.2 |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 59.1 |
Income (loss) from operation of discontinued operations before income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.9 |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10.2) |
Lightlife |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business |  |  |  |  |  |  |  |  |  |  |  |  |  | 54.7 |  |
Pretax gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  | (32.1) |  |
After-tax gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  |  | (19.8) |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.2 |
Income (loss) from operation of discontinued operations before income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  | (0.7) | 1.9 |
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  |  |  |  |  | (0.3) | 14.9 |
Ralcorp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early repayment of senior debt |  |  | 33.9 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on extinguishment of debt |  |  | (5.4) |  |  |  |  |  |  |  |  |  |  |  |  |
2020 Maturity | Senior Notes | Ralcorp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early repayment of senior debt |  |  | $ 17.2 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 4.95% |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  | 2.83% |  |  |  |  |  |  |  |  |  |  |  |  |
2039 Maturity | Senior Notes | Ralcorp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early repayment of senior debt |  |  | $ 16.7 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 6.625% |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate |  |  | 4.82% |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Foods |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  |  |  |  |  | $ 5.1 | $ 8.9 | $ 10.2 |  |  |  |  |
Impairment, goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.0 |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  | 4,417.8 | 4,371.7 | 4,241.9 |
Commercial Foods | Scenario, Forecast | Spicetec |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business, net | $ 316.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Foods | Scenario, Forecast | JM Swank |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of business, net | $ 162.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate Segment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncurrent assets held for sale |  | $ 6.9 |  |  |  |  |  |  |  |  |  |  | 6.9 |  |  |
Consumer Foods |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment, goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.9 |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,225.1 | 7,565.3 | $ 7,596.3 |
Noncurrent assets held for sale |  |  |  |  |  | $ 16.7 |  |  |  |  |  |  |  | $ 16.7 |  |

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