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PENSION AND POSTRETIREMENT BENEFITS - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 02, 2020 | Nov. 24, 2019 | Aug. 25, 2019 | Nov. 25, 2018 | Nov. 24, 2019 | Nov. 25, 2018 | May 27, 2019
Pension Benefits |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |  |  |  |  |
Pension curtailment loss within other comprehensive income (loss) |  | $ 0.0 |  | $ 0.0 | $ 0.6 | $ 0.0 |
Weighted average discount rate for service costs |  | 3.47% | 4.04% |  |  |  |
Weighted average discount rate for interest costs |  | 2.94% | 3.51% |  |  |  |
Employer contributions to pension and other postretirement plans |  | $ 4.0 |  |  | 7.4 |  |
Anticipated further contributions for the remainder of fiscal 2020 |  | 6.8 |  |  | 6.8 |  |
Pension Benefits | Subsequent Event |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |  |  |  |  |
Lump-sum settlement payment | $ 155.0 |  |  |  |  |  |
Postretirement Benefits |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |  |  |  |  |
Pension curtailment loss within other comprehensive income (loss) |  | 0.0 |  | $ 0.0 | 0.0 | $ (0.6) |
Employer contributions to pension and other postretirement plans |  | 0.8 |  |  | 2.0 |  |
Anticipated further contributions for the remainder of fiscal 2020 |  | $ 8.8 |  |  | $ 8.8 |  |
Spinoff | Pension Benefits |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] |  |  |  |  |  |  |
Effective discount rate assumption |  |  | 3.13% |  |  |  | 3.90%
Pension curtailment loss within other comprehensive income (loss) |  |  | $ 0.6 |  |  |  |
Increase to underfunded status of the pension plans |  |  | $ 12.3 |  |  |  |

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