Restructuring, Impairment, and Other Exit Costs (Schedule of restructuring charges classification) (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
Project-related costs classified in cost of sales	0.1	3.0	1.3	8.4
Restructuring, Impairment, and Other Exit Costs [Member]
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	59.7	7.5	267.7	14.3
Cost of Sales [Member]
Restructuring and Related Cost [Line Items]
Restructuring charges (recoveries), impairment, and other exit costs	$ 0.1	$ 0.1	$ 0.3	$ 13.0