DIVESTITURES AND ASSETS HELD FOR SALE - Schedule of Assets and Liabilities Classified as Held for Sale (Details) - USD ($) $ in Millions	Aug. 25, 2019	May 26, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	$ 22.6	$ 22.3
Noncurrent assets	151.0	188.6
Held-for-sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	1.2	0.9
Noncurrent assets	19.8	32.4
Current liabilities	7.0	4.6
Noncurrent liabilities	5.6
DSD Snacks Business | Held-for-sale, not discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	21.4	21.4
Noncurrent assets	131.2	156.2
Current liabilities	7.0	4.6
Noncurrent liabilities	$ 5.6	$ 0.0