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BUSINESS SEGMENTS AND RELATED INFORMATION - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2020 USD ($) | Feb. 23, 2020 USD ($) | Nov. 24, 2019 USD ($) | Aug. 25, 2019 USD ($) | May 26, 2019 USD ($) | Feb. 24, 2019 USD ($) | Nov. 25, 2018 USD ($) | Aug. 26, 2018 USD ($) | May 31, 2020 USD ($) segment | May 26, 2019 USD ($) | May 27, 2018 USD ($)
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  | 4 |  |
Cumulative net derivative losses from economic hedges recognized in general corporate expenses | $ 4.1 |  |  |  |  |  |  |  | $ 4.1 |  |
Net losses incurred |  |  |  |  |  |  |  |  | 4.5 |  |
Net gain incurred in prior fiscal years |  |  |  |  |  |  |  |  |  | $ 0.4 |
Net losses expected to be reclassified in fiscal 2021 |  |  |  |  |  |  |  |  | 2.1 |  |
Net losses expected to be reclassified in fiscal 2022 and thereafter |  |  |  |  |  |  |  |  | 2.0 |  |
Total depreciation expense |  |  |  |  |  |  |  |  | 329.1 | 283.9 | $ 222.1
Net sales | 3,287.9 | $ 2,555.0 | $ 2,820.8 | $ 2,390.7 | $ 2,613.2 | $ 2,707.1 | $ 2,383.7 | $ 1,834.4 | 11,054.4 | 9,538.4 | $ 7,938.3
Accounts payable to suppliers who utilize third-party service | $ 258.7 |  |  |  | $ 189.3 |  |  |  | $ 258.7 | $ 189.3 |
Customer concentration risk | Wal-Mart Stores, Inc. and affiliates | Net sales |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  |  |  |  |  |  | 26.00% | 24.00% | 24.00%
Customer concentration risk | Wal-Mart Stores, Inc. and affiliates | Net receivables |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  |  |  |  |  |  | 30.00% | 30.00% |
Customer concentration risk | The Kroger Co. and affiliates | Net receivables |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  |  |  |  |  |  | 10.00% |  |
Non-US |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 946.8 | $ 919.5 | $ 918.4

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