RESTRUCTURING, IMPAIRMENT, AND OTHER EXIT COSTS (Details) (USD $) In Millions	12 Months Ended
	May 29, 2011	May 30, 2010	May 31, 2009	May 25, 2008
Restructuring, impairment, and other exit costs	$ 4.4	$ 31.4	$ 41.6
Payments For Restructuring	5.9	8.0
Restructuring Reserve	7.2	10.8	18.8	7.9
Restructuring Reserve Period Expense	0	1.0	15.8
Restructuring Reserve Settled With Cash	3.6	9.0	4.9
Discontinuation Of Kids Refrigerated Yogurt Beverage And Microwave Soup Product Lines [Member]
Restructuring, impairment, and other exit costs	24.1	24.1
Brazil Bread And Pasta Plant [Member]
Restructuring, impairment, and other exit costs		(0.6)	16.8
Gain Loss On Disposition Of Property		0.6
Proceeds From Sale Of Previously Restructured Assets		5.9
Actions Previously Announced [Member]
Restructuring, impairment, and other exit costs	2.7	1.7	16.5
Underperforming products in USRO [Member]
Restructuring, impairment, and other exit costs	1.7
Asset Impairment Charges	1.7
Maryland Plant [Member]
Restructuring, impairment, and other exit costs		6.2
Proceeds From Sale Of Previously Restructured Assets		2.9
Tennessee Plant [Member]
Restructuring, impairment, and other exit costs			8.3
Employee Severance [Member]
Restructuring Reserve	1.7	2.6	8.4	7.6
Restructuring Reserve Period Expense	0	0.2	5.5
Restructuring Reserve Settled With Cash	0.9	6.0	4.7
Contract Termination [Member]
Restructuring Reserve	5.5	8.1	10.3	0
Restructuring Reserve Period Expense	0	0.8	10.3
Restructuring Reserve Settled With Cash	2.6	3.0	0
Other Exit Costs [Member]
Restructuring Reserve	0	0.1	0.1	0.3
Restructuring Reserve Period Expense	0	0	0
Restructuring Reserve Settled With Cash	$ 0.1	$ 0	$ 0.2