Inventories (Details) - USD ($) $ in Millions	Nov. 28, 2021	May 30, 2021
Inventories [Abstract]
Raw materials and packaging	$ 422.1	$ 411.9
Finished goods	1,457.4	1,506.9
Grain	206.4	111.2
Excess of FIFO over LIFO cost	(288.6)	(209.5)
Total	1,797.3	$ 1,820.5
Yoplait SAAS, Yoplait Marques SNC and Liberte Marques Sarl [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories classified as held for sale	$ 24.6

Amount classified as inventory attributable to disposal group, expected to be disposed of within one year or the normal operating cycle, if longer.

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Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Gross amount of components used by the entity which are bought from another entity rather than produced by the entity.

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