LONG-TERM DEBT (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended	3 Months Ended			9 Months Ended		3 Months Ended	9 Months Ended
	Feb. 23, 2014	Nov. 24, 2013	Feb. 23, 2014	Feb. 24, 2013	Feb. 23, 2014 Unsecured Debt Ralcorp Notes	Feb. 24, 2013 Unsecured Debt Ralcorp Notes	Feb. 23, 2014 Unsecured Debt Ralcorp Notes	Feb. 23, 2014 2010 Interest Rate Swap [Member]	Feb. 24, 2013 2010 Interest Rate Swap [Member]	Nov. 27, 2010 2010 Interest Rate Swap [Member]	Feb. 23, 2014 2010 Interest Rate Swap [Member]	Feb. 24, 2013 2010 Interest Rate Swap [Member]	Feb. 23, 2014 2014 Interest Rate Swap [Member]	Feb. 23, 2014 2014 Interest Rate Swap [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 20.0	$ 43.0	$ 71.2	$ 911.8
Reduction of net interest expense due to impact of interest rate swap contracts	3.1		7.8					2.4	2.3		7.1	6.8	0.7	0.7
Proceeds from termination of interest rate swap contract										28.2
Senior unsecured notes					716.0		716.0
Senior notes					33.9		33.9
Debt fair value adjustment							163.8
Amortization fair value adjustment					1.8	0.3	5.2
Gains (Losses) on Extinguishment of Debt	$ 1.3	$ 2.4