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Inventories (Tables)
9 Months Ended
Feb. 24, 2019
Inventories [Abstract]  
Schedule of components of inventories [Table Text Block]
In MillionsFeb. 24, 2019May 27, 2018
Raw materials and packaging$401.0$400.0
Finished goods1,263.41,364.2
Grain97.891.2
Excess of FIFO over LIFO cost(217.7)(213.2)
Total$1,544.5$1,642.2