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BUSINESS SEGMENTS AND RELATED INFORMATION - Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 26, 2017 USD ($) | Feb. 28, 2016 | Feb. 26, 2017 USD ($) segment | Feb. 28, 2016 | May 29, 2016 USD ($)
Segment Reporting [Abstract] |  |  |  |  |
Number of reportable segments | segment |  |  | 5 |  |
Cumulative net derivative gains from economic hedges recognized in general corporate expenses | $ 2.5 |  | $ 2.5 |  |
Net gains incurred |  |  | 2.3 |  |
Derivative gains incurred in prior fiscal years |  |  |  |  | $ 0.2
Gains expected to be reclassified |  |  | 3.2 |  |
Losses expected to be reclassified in later fiscal years |  |  | 0.7 |  |
Revenue, Major Customer [Line Items] |  |  |  |  |
Accounts payable to suppliers who utilize third-party service | $ 11.8 |  | $ 11.8 |  |
Customer concentration risk | Net sales | Wal-Mart Stores, Inc. and affiliates |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |
Concentration risk (as a percent) | 24.00% | 23.00% | 24.00% | 23.00% |
Customer concentration risk | Net receivables | Wal-Mart Stores, Inc. and affiliates |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |
Concentration risk (as a percent) |  |  | 24.00% |  | 24.00%

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