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SHARE-BASED PAYMENTS - Performance Share Awards (Narrative) (Details) - Performance Shares - USD ($) $ in Millions | 12 Months Ended
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May 30, 2021 | May 31, 2020 | May 26, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense (income) | $ 34.9 | $ 31.8 | $ 8.2
Tax benefit | 3.6 | 2.9 | 2.1
Total intrinsic value of share units vested | 33.9 | $ 8.4 | $ 15.7
Unrecognized compensation expense, net of estimated forfeitures, related to share unit awards | $ 19.8 |  |
Weighted average period for recognition | 1 year 8 months 12 days |  |
Fiscal 2021 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Fiscal 2021 | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 0.00% |  |
Fiscal 2021 | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 200.00% |  |
Fiscal 2022 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Fiscal 2022 | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 0.00% |  |
Fiscal 2022 | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 200.00% |  |
Fiscal 2023 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Granted period | 2 years |  |
Fiscal 2023 | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 0.00% |  |
Fiscal 2023 | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award payout (as a percent) | 200.00% |  |

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