Restructuring, Impairment, and Other Exit Costs (Schedule of restructuring charges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 24, 2019	Feb. 25, 2018	Feb. 24, 2019	Feb. 25, 2018
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	$ 59.8	$ 7.6	$ 268.0	$ 27.3
Restructuring actions previously announced [Member]
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	(0.2)	7.6	2.2	27.3
Asset impairments [Member]
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	1.2	$ 0.0	207.0	$ 0.0
Targeted Actions In Global Supply Chain [Member]
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	$ 58.8		$ 58.8