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Business Segment and Geographic Information (Schedule of operating segment results) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 27, 2022 | Nov. 28, 2021 | Nov. 27, 2022 | Nov. 28, 2021
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 5,220.7 | $ 5,024.0 | $ 9,938.3 | $ 9,563.9
Operating profit | 799.8 | 800.1 | 1,885.4 | 1,644.4
Divestitures gain, net | 0.0 | 0.0 | (430.9) | 0.0
Restructuring, impairment, and other exit costs (recoveries) | 11.1 | 2.3 | 12.7 | (2.0)
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 5,220.7 | 5,024.0 | 9,938.3 | 9,563.9
Operating profit | 1,023.0 | 934.2 | 2,012.3 | 1,830.4
Unallocated Corporate Items [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating profit | 212.1 | 131.8 | 545.1 | 188.0
Significant Reconciling Items [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Divestitures gain, net | 0.0 | 0.0 | (430.9) | 0.0
Restructuring, impairment, and other exit costs (recoveries) | 11.1 | 2.3 | 12.7 | (2.0)
North America Retail [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 3,373.1 | 3,044.6 | 6,361.9 | 5,755.2
Operating profit | 837.1 | 675.4 | 1,614.9 | 1,324.0
U.S. Meals & Baking [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 1,321.7 | 1,203.1 | 2,270.9 | 2,064.6
U.S. Morning Foods [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 908.5 | 826.7 | 1,812.5 | 1,656.4
U.S. Snacks [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 892.9 | 757.2 | 1,780.1 | 1,537.3
Canada [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 250.0 | 257.6 | 498.4 | 496.9
International [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 671.7 | 914.4 | 1,324.2 | 1,845.0
Operating profit | 17.8 | 59.4 | 52.6 | 120.0
Pet [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 592.9 | 593.4 | 1,172.8 | 1,081.4
Operating profit | 86.6 | 131.5 | 209.7 | 246.7
North America Foodservice [Member] | Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 583.0 | 471.6 | 1,079.4 | 882.3
Operating profit | $ 81.5 | $ 67.9 | $ 135.1 | $ 139.7

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