GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended				3 Months Ended		3 Months Ended
	Feb. 23, 2014	Feb. 24, 2013	Feb. 23, 2014	Feb. 24, 2013	May 26, 2013	Jan. 29, 2013 Ralcorp	Feb. 23, 2014 Goodwill Ralcorp	Jan. 29, 2013 Goodwill Ralcorp	Feb. 23, 2014 Other Intangible Assets Ralcorp	Jan. 29, 2013 Other Intangible Assets Ralcorp
Indefinite-lived Intangible Assets [Line Items]
Noncurrent assets held for sale	$ 86.9		$ 86.9		$ 144.1	$ 57.2	$ 17.5	$ 17.5	$ 14.4	$ 14.6
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax	25.4	0	25.4	0			17.5		7.9
Weighted average life in years of amortizing intangible assets			23 years
Amortization expense year one	109.3		109.3
Amortization expense year two	109.3		109.3
Amortization expense year three	109.3		109.3
Amortization expense year four	109.3		109.3
Amortization expense year five	$ 109.3		$ 109.3