Restructuring, Impairment, and Other Exit Costs (Schedule of restructuring charges classification) (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2016	May 31, 2015	May 25, 2014
Restructuring and Related Cost [Line Items]
Restructuring, impairment, and other exit costs	$ 229.8	$ 343.5	$ 3.6
Project-related costs classified in cost of sales	57.5	13.2	0.0
Cost of Sales [Member]
Restructuring and Related Cost [Line Items]
Restructuring, impairment, and other exit costs	78.4	59.6	0.0
Restructuring Charges [Member]
Restructuring and Related Cost [Line Items]
Restructuring, impairment, and other exit costs	$ 151.4	$ 283.9	$ 3.6