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RESTRUCTURING ACTIVITIES - Schedule of Pre-Tax Expenses in Association with the SCAE Plan (Details) - SCAE Plan - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 26, 2017 | Nov. 27, 2016 | Nov. 26, 2017 | Nov. 27, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | $ 464.8 |  | $ 464.8 |
Recognized pre-tax expenses | 7.1 | $ 19.8 | 18.5 | $ 33.9
Cumulative pre-tax expenses | 440.8 |  | 440.8 |
Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 125.1 |  | 125.1 |
Recognized pre-tax expenses | 4.0 |  | 10.2 |
Cumulative pre-tax expenses | 123.2 |  | 123.2 |
Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 43.6 |  | 43.6 |
Cumulative pre-tax expenses | 43.6 |  | 43.6 |
Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 4.1 |  | 4.1 |
Recognized pre-tax expenses | 0.9 |  | 0.9 |
Cumulative pre-tax expenses | 4.1 |  | 4.1 |
Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 7.9 |  | 7.9 |
Cumulative pre-tax expenses | 7.9 |  | 7.9 |
Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 284.1 |  | 284.1 |
Recognized pre-tax expenses | 2.2 |  | 7.4 |
Cumulative pre-tax expenses | 262.0 |  | 262.0 |
Total cost of goods sold |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 98.5 |  | 98.5 |
Recognized pre-tax expenses | 3.4 |  | 5.7 |
Cumulative pre-tax expenses | 98.0 |  | 98.0 |
Total cost of goods sold | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 75.1 |  | 75.1 |
Recognized pre-tax expenses | 3.4 |  | 5.7 |
Cumulative pre-tax expenses | 74.6 |  | 74.6 |
Total cost of goods sold | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 22.2 |  | 22.2 |
Cumulative pre-tax expenses | 22.2 |  | 22.2 |
Total cost of goods sold | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Total cost of goods sold | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Total cost of goods sold | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 1.2 |  | 1.2 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 1.2 |  | 1.2 |
Pension costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 34.4 |  | 34.4 |
Recognized pre-tax expenses | 2.1 |  | 2.1 |
Cumulative pre-tax expenses | 36.5 |  | 36.5 |
Pension costs | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 32.9 |  | 32.9 |
Recognized pre-tax expenses | 2.1 |  | 2.1 |
Cumulative pre-tax expenses | 35.0 |  | 35.0 |
Pension costs | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 1.5 |  | 1.5 |
Cumulative pre-tax expenses | 1.5 |  | 1.5 |
Pension costs | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Pension costs | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Pension costs | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 52.0 |  | 52.0 |
Recognized pre-tax expenses |  |  | 1.2 |
Cumulative pre-tax expenses | 52.0 |  | 52.0 |
Accelerated depreciation | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 32.2 |  | 32.2 |
Recognized pre-tax expenses |  |  | 1.2 |
Cumulative pre-tax expenses | 32.2 |  | 32.2 |
Accelerated depreciation | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 18.6 |  | 18.6 |
Cumulative pre-tax expenses | 18.6 |  | 18.6 |
Accelerated depreciation | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses |  |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 1.2 |  | 1.2 |
Recognized pre-tax expenses |  |  | 0.0 |
Cumulative pre-tax expenses | 1.2 |  | 1.2 |
Other cost of goods sold |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 12.1 |  | 12.1 |
Recognized pre-tax expenses | 1.3 |  | 2.4 |
Cumulative pre-tax expenses | 9.5 |  | 9.5 |
Other cost of goods sold | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 10.0 |  | 10.0 |
Recognized pre-tax expenses | 1.3 |  | 2.4 |
Cumulative pre-tax expenses | 7.4 |  | 7.4 |
Other cost of goods sold | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 2.1 |  | 2.1 |
Cumulative pre-tax expenses | 2.1 |  | 2.1 |
Other cost of goods sold | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Other cost of goods sold | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Other cost of goods sold | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Total selling, general and administrative expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 366.3 |  | 366.3 |
Recognized pre-tax expenses | 3.7 |  | 12.8 |
Cumulative pre-tax expenses | 342.8 |  | 342.8 |
Total selling, general and administrative expenses | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 50.0 |  | 50.0 |
Recognized pre-tax expenses | 0.6 |  | 4.5 |
Cumulative pre-tax expenses | 48.6 |  | 48.6 |
Total selling, general and administrative expenses | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 21.4 |  | 21.4 |
Cumulative pre-tax expenses | 21.4 |  | 21.4 |
Total selling, general and administrative expenses | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 4.1 |  | 4.1 |
Recognized pre-tax expenses | 0.9 |  | 0.9 |
Cumulative pre-tax expenses | 4.1 |  | 4.1 |
Total selling, general and administrative expenses | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 7.9 |  | 7.9 |
Cumulative pre-tax expenses | 7.9 |  | 7.9 |
Total selling, general and administrative expenses | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 282.9 |  | 282.9 |
Recognized pre-tax expenses | 2.2 |  | 7.4 |
Cumulative pre-tax expenses | 260.8 |  | 260.8 |
Severance and related costs, net |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 151.0 |  | 151.0 |
Recognized pre-tax expenses | 1.3 |  | 3.3 |
Cumulative pre-tax expenses | 149.4 |  | 149.4 |
Severance and related costs, net | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 26.0 |  | 26.0 |
Recognized pre-tax expenses | (0.2) |  | 1.8 |
Cumulative pre-tax expenses | 25.7 |  | 25.7 |
Severance and related costs, net | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 10.3 |  | 10.3 |
Cumulative pre-tax expenses | 10.3 |  | 10.3 |
Severance and related costs, net | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 3.4 |  | 3.4 |
Recognized pre-tax expenses | 0.9 |  | 0.9 |
Cumulative pre-tax expenses | 3.4 |  | 3.4 |
Severance and related costs, net | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 7.9 |  | 7.9 |
Cumulative pre-tax expenses | 7.9 |  | 7.9 |
Severance and related costs, net | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 103.4 |  | 103.4 |
Recognized pre-tax expenses | 0.6 |  | 0.6 |
Cumulative pre-tax expenses | 102.1 |  | 102.1 |
Fixed asset impairment (net of gains on disposal) |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 24.0 |  | 24.0 |
Recognized pre-tax expenses | (1.5) |  | 3.0 |
Cumulative pre-tax expenses | 24.0 |  | 24.0 |
Fixed asset impairment (net of gains on disposal) | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 5.9 |  | 5.9 |
Recognized pre-tax expenses | (1.5) |  | (1.4) |
Cumulative pre-tax expenses | 5.9 |  | 5.9 |
Fixed asset impairment (net of gains on disposal) | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 6.9 |  | 6.9 |
Cumulative pre-tax expenses | 6.9 |  | 6.9 |
Fixed asset impairment (net of gains on disposal) | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Fixed asset impairment (net of gains on disposal) | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Fixed asset impairment (net of gains on disposal) | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 11.2 |  | 11.2 |
Recognized pre-tax expenses | 0.0 |  | 4.4 |
Cumulative pre-tax expenses | 11.2 |  | 11.2 |
Accelerated depreciation |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 4.7 |  | 4.7 |
Recognized pre-tax expenses | 0.7 |  | 1.3 |
Cumulative pre-tax expenses | 3.9 |  | 3.9 |
Accelerated depreciation | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Accelerated depreciation | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 4.7 |  | 4.7 |
Recognized pre-tax expenses | 0.7 |  | 1.3 |
Cumulative pre-tax expenses | 3.9 |  | 3.9 |
Contract/lease cancellation expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 88.3 |  | 88.3 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 73.3 |  | 73.3 |
Contract/lease cancellation expenses | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.9 |  | 0.9 |
Recognized pre-tax expenses | 0.1 |  | 0.1 |
Cumulative pre-tax expenses | 0.9 |  | 0.9 |
Contract/lease cancellation expenses | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.6 |  | 0.6 |
Cumulative pre-tax expenses | 0.6 |  | 0.6 |
Contract/lease cancellation expenses | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.6 |  | 0.6 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.6 |  | 0.6 |
Contract/lease cancellation expenses | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Contract/lease cancellation expenses | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 86.2 |  | 86.2 |
Recognized pre-tax expenses | (0.1) |  | (0.1) |
Cumulative pre-tax expenses | 71.2 |  | 71.2 |
Consulting/professional fees |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 55.7 |  | 55.7 |
Recognized pre-tax expenses | 0.5 |  | 0.7 |
Cumulative pre-tax expenses | 53.3 |  | 53.3 |
Consulting/professional fees | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 1.1 |  | 1.1 |
Recognized pre-tax expenses | 0.1 |  | 0.1 |
Cumulative pre-tax expenses | 1.0 |  | 1.0 |
Consulting/professional fees | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.4 |  | 0.4 |
Cumulative pre-tax expenses | 0.4 |  | 0.4 |
Consulting/professional fees | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.1 |  | 0.1 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.1 |  | 0.1 |
Consulting/professional fees | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Consulting/professional fees | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 54.1 |  | 54.1 |
Recognized pre-tax expenses | 0.4 |  | 0.6 |
Cumulative pre-tax expenses | 51.8 |  | 51.8 |
Other selling, general and administrative expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 42.6 |  | 42.6 |
Recognized pre-tax expenses | 2.7 |  | 4.5 |
Cumulative pre-tax expenses | 38.9 |  | 38.9 |
Other selling, general and administrative expenses | Reporting segments | Grocery & Snacks |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 16.1 |  | 16.1 |
Recognized pre-tax expenses | 2.1 |  | 3.9 |
Cumulative pre-tax expenses | 15.1 |  | 15.1 |
Other selling, general and administrative expenses | Reporting segments | Refrigerated & Frozen |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 3.2 |  | 3.2 |
Cumulative pre-tax expenses | 3.2 |  | 3.2 |
Other selling, general and administrative expenses | Reporting segments | International |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Recognized pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Other selling, general and administrative expenses | Reporting segments | Foodservice |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 0.0 |  | 0.0 |
Cumulative pre-tax expenses | 0.0 |  | 0.0 |
Other selling, general and administrative expenses | Corporate |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Anticipated pre-tax expenses | 23.3 |  | 23.3 |
Recognized pre-tax expenses | 0.6 |  | 0.6 |
Cumulative pre-tax expenses | $ 20.6 |  | $ 20.6 |

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