Restructuring, Impairment, and Other Exit Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 24, 2013	Feb. 26, 2012	Feb. 24, 2013	Feb. 26, 2012
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs	$ 6.1	$ 0.1	$ 18.0	$ 0.9
Productivity And Cost Savings Plan [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			16.7
Payments for Restructuring			65.8
Productivity And Cost Savings Plan [Member] | U.S. Retail [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			2.0
Productivity And Cost Savings Plan [Member] | International [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			13.9
Productivity And Cost Savings Plan [Member] | Bakeries And Foodservice Segment [Member]
Restructuring And Related Cost [Line Items]
Restructuring, impairment, and other exit costs			$ 0.8