Restructuring, Impairment, and Other Exit Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 25, 2014	May 26, 2013	May 27, 2012
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs	$ 3.6	$ 19.8	$ 101.6
Payments for Restructuring	(22.4)	(77.0)	(3.7)
Significant Reconciling Items [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs	3.6	19.8	101.6
Productivity And Cost Savings Plan [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			100.6
Restructuring and Related Cost, Approximate Number of Positions Eliminated			850
Severance Costs		10.6	87.6
Asset Impairment Charges		8.0
Productivity And Cost Savings Plan [Member] | Unallocated Corporate Items [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			9.0
Productivity And Cost Savings Plan [Member] | United States [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			69.9
Asset Impairment Charges			13.0
Productivity And Cost Savings Plan [Member] | International [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			9.5
Productivity And Cost Savings Plan [Member] | Convenience Stores and Foodservice [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			12.2
Actions Previously Announced [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs	3.6	19.8	1.0
Payments for Restructuring	$ 22.4	$ 79.9	$ 3.8