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RESTRUCTURING ACTIVITIES - Schedule of Pre-Tax Expenses in Association with the Restructuring Plan (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 22 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Nov. 29, 2020 | Nov. 24, 2019 | Nov. 29, 2020 | Nov. 24, 2019 | Nov. 29, 2020 | Nov. 29, 2020
Pinnacle Integration Restructuring Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | $ 360.0 |  | $ 360.0 |  | $ 360.0 | $ 360.0
Recognized pre-tax expenses | 10.2 | $ 16.2 | 18.8 | $ 43.9 |  | 260.8
Pinnacle Integration Restructuring Plan | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 14.7 |  | 14.7 |  | 14.7 | 14.7
Recognized pre-tax expenses | 0.8 |  | 1.4 |  |  | 4.1
Pinnacle Integration Restructuring Plan | Other cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 12.2 |  | 12.2 |  | 12.2 | 12.2
Recognized pre-tax expenses | 0.2 |  | 0.7 |  |  | 4.7
Pinnacle Integration Restructuring Plan | Total cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 26.9 |  | 26.9 |  | 26.9 | 26.9
Recognized pre-tax expenses | 1.0 |  | 2.1 |  |  | 8.8
Pinnacle Integration Restructuring Plan | Severance and related costs |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 119.5 |  | 119.5 |  | 119.5 | 119.5
Recognized pre-tax expenses | (0.7) |  | (1.4) |  |  | 119.5
Pinnacle Integration Restructuring Plan | Asset impairment (net of gains on disposal) |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 38.7 |  | 38.7 |  | 38.7 | 38.7
Recognized pre-tax expenses | 0.1 |  | (0.2) |  |  | 6.7
Pinnacle Integration Restructuring Plan | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 7.4 |  | 7.4 |  | 7.4 | 7.4
Recognized pre-tax expenses |  |  |  |  |  | 7.4
Pinnacle Integration Restructuring Plan | Contract/lease termination |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 30.1 |  | 30.1 |  | 30.1 | 30.1
Recognized pre-tax expenses | 2.2 |  | 2.4 |  |  | 18.3
Pinnacle Integration Restructuring Plan | Consulting/professional fees |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 104.8 |  | 104.8 |  | 104.8 | 104.8
Recognized pre-tax expenses | 5.2 |  | 11.7 |  |  | 80.0
Pinnacle Integration Restructuring Plan | Other selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 32.6 |  | 32.6 |  | 32.6 | 32.6
Recognized pre-tax expenses | 2.4 |  | 4.2 |  |  | 20.1
Pinnacle Integration Restructuring Plan | Selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 333.1 |  | 333.1 |  | 333.1 | 333.1
Recognized pre-tax expenses | 9.2 |  | 16.7 |  |  | 252.0
Pinnacle Integration Restructuring Plan | Reporting segments | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 60.4 |  | 60.4 |  | 60.4 | 60.4
Recognized pre-tax expenses | 4.5 |  | 5.4 |  |  | 8.2
Pinnacle Integration Restructuring Plan | Reporting segments | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 30.3 |  | 30.3 |  | 30.3 | 30.3
Recognized pre-tax expenses | 0.5 |  | 2.2 |  |  | 14.0
Pinnacle Integration Restructuring Plan | Reporting segments | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.1 |  | 4.1 |  | 4.1 | 4.1
Recognized pre-tax expenses |  |  |  |  |  | 4.1
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 8.7 |  | 8.7 |  | 8.7 | 8.7
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.6
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 6.0 |  | 6.0 |  | 6.0 | 6.0
Recognized pre-tax expenses | 0.8 |  | 1.4 |  |  | 3.5
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Other cost of goods sold | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.3 |  | 4.3 |  | 4.3 | 4.3
Recognized pre-tax expenses | 0.0 |  | 0.5 |  |  | 2.3
Pinnacle Integration Restructuring Plan | Reporting segments | Other cost of goods sold | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 7.2 |  | 7.2 |  | 7.2 | 7.2
Recognized pre-tax expenses | 0.2 |  | 0.2 |  |  | 1.7
Pinnacle Integration Restructuring Plan | Reporting segments | Other cost of goods sold | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.7 |  | 0.7 |  | 0.7 | 0.7
Recognized pre-tax expenses |  |  |  |  |  | 0.7
Pinnacle Integration Restructuring Plan | Reporting segments | Total cost of goods sold | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 13.0 |  | 13.0 |  | 13.0 | 13.0
Recognized pre-tax expenses | 0.0 |  | 0.5 |  |  | 2.9
Pinnacle Integration Restructuring Plan | Reporting segments | Total cost of goods sold | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 13.2 |  | 13.2 |  | 13.2 | 13.2
Recognized pre-tax expenses | 1.0 |  | 1.6 |  |  | 5.2
Pinnacle Integration Restructuring Plan | Reporting segments | Total cost of goods sold | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.7 |  | 0.7 |  | 0.7 | 0.7
Recognized pre-tax expenses |  |  |  |  |  | 0.7
Pinnacle Integration Restructuring Plan | Reporting segments | Severance and related costs | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Severance and related costs | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.4 |  | 4.4 |  | 4.4 | 4.4
Recognized pre-tax expenses | 0.0 |  | 0.1 |  |  | 4.4
Pinnacle Integration Restructuring Plan | Reporting segments | Severance and related costs | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.5 |  | 1.5 |  | 1.5 | 1.5
Recognized pre-tax expenses |  |  |  |  |  | 1.5
Pinnacle Integration Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 32.3 |  | 32.3 |  | 32.3 | 32.3
Recognized pre-tax expenses | 0.1 |  | 0.1 |  |  | 0.3
Pinnacle Integration Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 3.8 |  | 3.8 |  | 3.8 | 3.8
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 3.8
Pinnacle Integration Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Accelerated depreciation | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Contract/lease termination | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 8.3 |  | 8.3 |  | 8.3 | 8.3
Recognized pre-tax expenses | 1.8 |  | 1.8 |  |  | 1.8
Pinnacle Integration Restructuring Plan | Reporting segments | Contract/lease termination | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.7 |  | 4.7 |  | 4.7 | 4.7
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Contract/lease termination | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.8 |  | 0.8 |  | 0.8 | 0.8
Recognized pre-tax expenses |  |  |  |  |  | 0.8
Pinnacle Integration Restructuring Plan | Reporting segments | Consulting/professional fees | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.0 |  | 1.0 |  | 1.0 | 1.0
Recognized pre-tax expenses | 0.1 |  | 0.4 |  |  | 0.6
Pinnacle Integration Restructuring Plan | Reporting segments | Consulting/professional fees | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Reporting segments | Consulting/professional fees | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.8 |  | 0.8 |  | 0.8 | 0.8
Recognized pre-tax expenses |  |  |  |  |  | 0.8
Pinnacle Integration Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 5.8 |  | 5.8 |  | 5.8 | 5.8
Recognized pre-tax expenses | 2.5 |  | 2.6 |  |  | 2.6
Pinnacle Integration Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.2 |  | 4.2 |  | 4.2 | 4.2
Recognized pre-tax expenses | (0.5) |  | 0.5 |  |  | 0.6
Pinnacle Integration Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.3 |  | 0.3 |  | 0.3 | 0.3
Recognized pre-tax expenses |  |  |  |  |  | 0.3
Pinnacle Integration Restructuring Plan | Reporting segments | Selling, general and administrative expenses | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 47.4 |  | 47.4 |  | 47.4 | 47.4
Recognized pre-tax expenses | 4.5 |  | 4.9 |  |  | 5.3
Pinnacle Integration Restructuring Plan | Reporting segments | Selling, general and administrative expenses | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 17.1 |  | 17.1 |  | 17.1 | 17.1
Recognized pre-tax expenses | (0.5) |  | 0.6 |  |  | 8.8
Pinnacle Integration Restructuring Plan | Reporting segments | Selling, general and administrative expenses | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 3.4 |  | 3.4 |  | 3.4 | 3.4
Recognized pre-tax expenses |  |  |  |  |  | 3.4
Pinnacle Integration Restructuring Plan | Corporate |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 265.2 |  | 265.2 |  | 265.2 | 265.2
Recognized pre-tax expenses | 5.2 |  | 11.2 |  |  | 234.5
Pinnacle Integration Restructuring Plan | Corporate | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Corporate | Other cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Corporate | Total cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  |  | 0.0
Pinnacle Integration Restructuring Plan | Corporate | Severance and related costs |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 113.6 |  | 113.6 |  | 113.6 | 113.6
Recognized pre-tax expenses | (0.7) |  | (1.5) |  |  | 113.6
Pinnacle Integration Restructuring Plan | Corporate | Asset impairment (net of gains on disposal) |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 2.6 |  | 2.6 |  | 2.6 | 2.6
Recognized pre-tax expenses | 0.0 |  | (0.3) |  |  | 2.6
Pinnacle Integration Restructuring Plan | Corporate | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 7.4 |  | 7.4 |  | 7.4 | 7.4
Recognized pre-tax expenses |  |  |  |  |  | 7.4
Pinnacle Integration Restructuring Plan | Corporate | Contract/lease termination |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 16.3 |  | 16.3 |  | 16.3 | 16.3
Recognized pre-tax expenses | 0.4 |  | 0.6 |  |  | 15.7
Pinnacle Integration Restructuring Plan | Corporate | Consulting/professional fees |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 103.0 |  | 103.0 |  | 103.0 | 103.0
Recognized pre-tax expenses | 5.1 |  | 11.3 |  |  | 78.6
Pinnacle Integration Restructuring Plan | Corporate | Other selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 22.3 |  | 22.3 |  | 22.3 | 22.3
Recognized pre-tax expenses | 0.4 |  | 1.1 |  |  | 16.6
Pinnacle Integration Restructuring Plan | Corporate | Selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 265.2 |  | 265.2 |  | 265.2 | 265.2
Recognized pre-tax expenses | 5.2 |  | 11.2 |  |  | 234.5
Conagra Restructuring Plan |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 156.2 |  | 156.2 |  | 156.2 | 156.2
Recognized pre-tax expenses | 10.5 | $ 19.6 | 27.8 | $ 40.7 | 94.4 |
Conagra Restructuring Plan | Other cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 11.0 |  | 11.0 |  | 11.0 | 11.0
Recognized pre-tax expenses |  |  | 2.3 |  | 5.0 |
Conagra Restructuring Plan | Total cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 93.4 |  | 93.4 |  | 93.4 | 93.4
Recognized pre-tax expenses | 8.5 |  | 17.8 |  | 48.8 |
Conagra Restructuring Plan | Severance and related costs |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 16.5 |  | 16.5 |  | 16.5 | 16.5
Recognized pre-tax expenses | 1.0 |  | 4.3 |  | 12.7 |
Conagra Restructuring Plan | Asset impairment (net of gains on disposal) |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 28.4 |  | 28.4 |  | 28.4 | 28.4
Recognized pre-tax expenses | 0.1 |  | 3.1 |  | 28.4 |
Conagra Restructuring Plan | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 82.4 |  | 82.4 |  | 82.4 | 82.4
Recognized pre-tax expenses | 8.5 |  | 15.5 |  | 43.8 |
Conagra Restructuring Plan | Contract/lease termination |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.3 |  | 0.3 |  | 0.3 | 0.3
Recognized pre-tax expenses |  |  |  |  | 0.1 |
Conagra Restructuring Plan | Consulting/professional fees |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.1 |  | 1.1 |  | 1.1 | 1.1
Conagra Restructuring Plan | Other selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 15.9 |  | 15.9 |  | 15.9 | 15.9
Recognized pre-tax expenses | 0.9 |  | 2.6 |  | 3.8 |
Conagra Restructuring Plan | Selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 62.2 |  | 62.2 |  | 62.2 | 62.2
Recognized pre-tax expenses | 2.0 |  | 10.0 |  | 45.0 |
Conagra Restructuring Plan | Total |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 155.6 |  | 155.6 |  | 155.6 | 155.6
Recognized pre-tax expenses | 10.5 |  | 27.8 |  | 93.8 |
Conagra Restructuring Plan | Pension And Postretirement Nonservice Cost Income |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.6 |  | 0.6 |  | 0.6 | 0.6
Recognized pre-tax expenses |  |  |  |  | 0.6 |
Conagra Restructuring Plan | Reporting segments | Other cost of goods sold | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 8.9 |  | 8.9 |  | 8.9 | 8.9
Recognized pre-tax expenses |  |  | 2.3 |  | 4.8 |
Conagra Restructuring Plan | Reporting segments | Other cost of goods sold | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 2.1 |  | 2.1 |  | 2.1 | 2.1
Recognized pre-tax expenses |  |  | 0.0 |  | 0.2 |
Conagra Restructuring Plan | Reporting segments | Other cost of goods sold | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Total cost of goods sold | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 45.9 |  | 45.9 |  | 45.9 | 45.9
Recognized pre-tax expenses | 1.9 |  | 7.2 |  | 33.8 |
Conagra Restructuring Plan | Reporting segments | Total cost of goods sold | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 47.5 |  | 47.5 |  | 47.5 | 47.5
Recognized pre-tax expenses | 6.6 |  | 10.6 |  | 15.0 |
Conagra Restructuring Plan | Reporting segments | Total cost of goods sold | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Severance and related costs | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 12.1 |  | 12.1 |  | 12.1 | 12.1
Recognized pre-tax expenses | 0.5 |  | 3.6 |  | 8.3 |
Conagra Restructuring Plan | Reporting segments | Severance and related costs | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.8 |  | 1.8 |  | 1.8 | 1.8
Recognized pre-tax expenses | 0.0 |  | 0.0 |  | 1.8 |
Conagra Restructuring Plan | Reporting segments | Severance and related costs | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.1 |  | 1.1 |  | 1.1 | 1.1
Recognized pre-tax expenses |  |  | (0.1) |  | 1.1 |
Conagra Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 28.0 |  | 28.0 |  | 28.0 | 28.0
Recognized pre-tax expenses | 0.0 |  | 3.0 |  | 28.0 |
Conagra Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.3 |  | 0.3 |  | 0.3 | 0.3
Recognized pre-tax expenses | 0.1 |  | 0.1 |  | 0.3 |
Conagra Restructuring Plan | Reporting segments | Asset impairment (net of gains on disposal) | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.1 |  | 0.1 |  | 0.1 | 0.1
Recognized pre-tax expenses |  |  | 0.0 |  | 0.1 |
Conagra Restructuring Plan | Reporting segments | Accelerated depreciation | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 37.0 |  | 37.0 |  | 37.0 | 37.0
Recognized pre-tax expenses | 1.9 |  | 4.9 |  | 29.0 |
Conagra Restructuring Plan | Reporting segments | Accelerated depreciation | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 45.4 |  | 45.4 |  | 45.4 | 45.4
Recognized pre-tax expenses | 6.6 |  | 10.6 |  | 14.8 |
Conagra Restructuring Plan | Reporting segments | Accelerated depreciation | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Contract/lease termination | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.2 |  | 0.2 |  | 0.2 | 0.2
Recognized pre-tax expenses |  |  |  |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Contract/lease termination | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Contract/lease termination | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  |  |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Consulting/professional fees | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Conagra Restructuring Plan | Reporting segments | Consulting/professional fees | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Conagra Restructuring Plan | Reporting segments | Consulting/professional fees | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Conagra Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 11.5 |  | 11.5 |  | 11.5 | 11.5
Recognized pre-tax expenses | 0.9 |  | 2.5 |  | 3.4 |
Conagra Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 4.3 |  | 4.3 |  | 4.3 | 4.3
Recognized pre-tax expenses | 0.0 |  | 0.0 |  | 0.3 |
Conagra Restructuring Plan | Reporting segments | Other selling, general and administrative expenses | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Reporting segments | Selling, general and administrative expenses | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 51.8 |  | 51.8 |  | 51.8 | 51.8
Recognized pre-tax expenses | 1.4 |  | 9.1 |  | 39.7 |
Conagra Restructuring Plan | Reporting segments | Selling, general and administrative expenses | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 6.4 |  | 6.4 |  | 6.4 | 6.4
Recognized pre-tax expenses | 0.1 |  | 0.1 |  | 2.4 |
Conagra Restructuring Plan | Reporting segments | Selling, general and administrative expenses | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.2 |  | 1.2 |  | 1.2 | 1.2
Recognized pre-tax expenses |  |  | (0.1) |  | 1.2 |
Conagra Restructuring Plan | Reporting segments | Total | Grocery & Snacks |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 97.7 |  | 97.7 |  | 97.7 | 97.7
Recognized pre-tax expenses | 3.3 |  | 16.3 |  | 73.5 |
Conagra Restructuring Plan | Reporting segments | Total | Refrigerated & Frozen |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 53.9 |  | 53.9 |  | 53.9 | 53.9
Recognized pre-tax expenses | 6.7 |  | 10.7 |  | 17.4 |
Conagra Restructuring Plan | Reporting segments | Total | International |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.2 |  | 1.2 |  | 1.2 | 1.2
Recognized pre-tax expenses |  |  | (0.1) |  | 1.2 |
Conagra Restructuring Plan | Corporate | Other cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses |  |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Corporate | Total cost of goods sold |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Corporate | Severance and related costs |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.5 |  | 1.5 |  | 1.5 | 1.5
Recognized pre-tax expenses | 0.5 |  | 0.8 |  | 1.5 |
Conagra Restructuring Plan | Corporate | Asset impairment (net of gains on disposal) |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Corporate | Accelerated depreciation |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.0 |  | 0.0 |  | 0.0 | 0.0
Recognized pre-tax expenses | 0.0 |  | 0.0 |  | 0.0 |
Conagra Restructuring Plan | Corporate | Contract/lease termination |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.1 |  | 0.1 |  | 0.1 | 0.1
Recognized pre-tax expenses |  |  |  |  | 0.1 |
Conagra Restructuring Plan | Corporate | Consulting/professional fees |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 1.1 |  | 1.1 |  | 1.1 | 1.1
Conagra Restructuring Plan | Corporate | Other selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 0.1 |  | 0.1 |  | 0.1 | 0.1
Recognized pre-tax expenses | 0.0 |  | 0.1 |  | 0.1 |
Conagra Restructuring Plan | Corporate | Selling, general and administrative expenses |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 2.8 |  | 2.8 |  | 2.8 | 2.8
Recognized pre-tax expenses | 0.5 |  | 0.9 |  | 1.7 |
Conagra Restructuring Plan | Corporate | Total |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |
Charges expected to be incurred | 2.8 |  | 2.8 |  | 2.8 | $ 2.8
Recognized pre-tax expenses | $ 0.5 |  | $ 0.9 |  | $ 1.7 |

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