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RESTRUCTURING ACTIVITIES (Details) - USD ($) $ in Millions | 12 Months Ended | 57 Months Ended | 60 Months Ended | 71 Months Ended
--- | --- | --- | --- | ---
May 26, 2024 | May 28, 2023 | May 29, 2022 | May 26, 2024 | May 26, 2024 | May 26, 2024
RESTRUCTURING ACTIVITIES |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost | $ 286.0 |  |  | $ 286.0 | $ 286.0 | $ 286.0
Conagra Restructuring Plan [Member] |  |  |  |  |  |
RESTRUCTURING ACTIVITIES |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost | 286.6 |  |  | 286.6 | $ 286.6 | 286.6
Restructuring and Related Cost, Incurred Cost | 66.6 | $ 10.7 | $ 29.4 | 0.6 |  | 219.5
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Pension and postretirement non-service income |
Restructuring And Related Cost Expected, Cash Outflows | 15.6 |  |  |  |  | 65.4
Restructuring and Related Cost, Expected Cost, Noncash | 51.0 |  |  | 51.0 | $ 51.0 | 51.0
Restructuring And Related Cost Expected, Noncash Charges |  |  |  |  |  | 154.1
Conagra Restructuring Plan [Member] | Cash Charges [Member] |  |  |  |  |  |
RESTRUCTURING ACTIVITIES |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost | 82.6 |  |  | 82.6 | 82.6 | 82.6
Conagra Restructuring Plan [Member] | Non-cash Charges [Member] |  |  |  |  |  |
RESTRUCTURING ACTIVITIES |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost | $ 204.0 |  |  | $ 204.0 | $ 204.0 | $ 204.0
Pinnacle Integration Restructuring Plan [Member] |  |  |  |  |  |
RESTRUCTURING ACTIVITIES |  |  |  |  |  |
Restructuring and Related Cost, Incurred Cost |  | $ 2.4 | $ 19.6 |  |  |

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