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RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 25 Months Ended | 27 Months Ended
--- | --- | --- | --- | ---
Feb. 28, 2021 | Feb. 23, 2020 | Feb. 28, 2021 | Feb. 23, 2020 | Feb. 28, 2021 | Feb. 28, 2021
Pinnacle Integration Restructuring Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | $ 362.3 |  | $ 362.3 |  | $ 362.3 | $ 362.3
Cash charges incurred or expected to be incurred | 284.3 |  | 284.3 |  | 284.3 | 284.3
Non-cash charges incurred or expected to be incurred | 78.0 |  | 78.0 |  | 78.0 | 78.0
Recognized charges | 5.4 | $ 19.6 | 24.2 | $ 63.5 |  | 266.2
Charges that have resulted or will result in cash outflows | 4.4 |  | 22.0 |  |  |
Non-cash charges | 1.0 |  | 2.2 |  |  |
Charges that have resulted or will result in cash outflows |  |  |  |  |  | 234.4
Non-cash charges |  |  |  |  |  | 31.8
Conagra Restructuring Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 157.4 |  | 157.4 |  | 157.4 | 157.4
Cash charges incurred or expected to be incurred | 36.9 |  | 36.9 |  | 36.9 | 36.9
Non-cash charges incurred or expected to be incurred | 120.5 |  | 120.5 |  | 120.5 | 120.5
Recognized charges | 10.0 | $ 11.9 | 37.8 | $ 52.6 | 104.4 |
Charges that have resulted or will result in cash outflows | 1.8 |  | 8.7 |  |  |
Non-cash charges | 8.2 |  | 29.1 |  |  |
Charges that have resulted or will result in cash outflows |  |  |  |  | 21.5 |
Non-cash charges |  |  |  |  | 82.9 |
Charges approved for incurrence | 171.0 |  | 171.0 |  | 171.0 | 171.0
Cash charges approved for incurrence | 44.2 |  | 44.2 |  | 44.2 | 44.2
Non-cash charges approved for incurrence | $ 126.8 |  | $ 126.8 |  | $ 126.8 | $ 126.8

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