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DISCONTINUED OPERATIONS (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 29, 2016 | Feb. 28, 2016 | Nov. 29, 2015 | Aug. 30, 2015 | May 31, 2015 | Feb. 22, 2015 | Aug. 24, 2014 | Nov. 23, 2014 | May 29, 2016 | May 31, 2015 | May 25, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income (loss) from discontinued operations, net of tax | $ 146.0 | $ 18.7 | $ (6.8) | $ (1,319.8) | $ (23.0) | $ (1,165.0) | $ 389.1 | $ (202.2) | $ (1,161.9) | $ (1,001.1) | $ (310.1)
Private Brands |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 2,490.6 | 3,895.4 | 4,005.4
Long-lived asset impairment charge |  |  |  |  |  |  |  |  | (1,923.0) | (1,564.6) | (596.2)
Income (loss) from operations of discontinued operations before income taxes |  |  |  |  |  |  |  |  | 168.0 | 68.8 | 186.5
Income (loss) before income taxes and equity method investment earnings |  |  |  |  |  |  |  |  | (1,755.0) | (1,495.8) | (409.7)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (593.1) | (128.1) | 41.8
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | $ (1,161.9) | (1,367.7) | (451.5)
ConAgra Mills |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 16.2 | 1,859.0
Income (loss) from operations of discontinued operations before income taxes |  |  |  |  |  |  |  |  |  | (9.2) | 124.8
Net gain on sale of businesses |  |  |  |  |  |  |  |  |  | 627.3 | 90.3
Income (loss) before income taxes and equity method investment earnings |  |  |  |  |  |  |  |  |  | 618.1 | 215.1
Income tax expense (benefit) |  |  |  |  |  |  |  |  |  | 251.1 | 78.0
Equity method investment earnings |  |  |  |  |  |  |  |  |  | 0.0 | 0.3
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  |  | $ 367.0 | $ 137.4

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