GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Aug. 30, 2015	May 29, 2016	May 31, 2015	May 25, 2014
Indefinite-lived Intangible Assets [Line Items]
Impairment, goodwill			$ 20.9
Goodwill		$ 4,533.8	4,544.6	$ 4,548.6
Weighted average life in years of amortizing intangible assets		16 years
Recognized amortization expense		$ 36.7	28.8	28.9
Average amortization expense		35.6
Amortization expense year one		36.8
Amortization expense year five		34.8
Finite-lived Intangible Assets Acquired	$ 92.8
Payments to Acquire Intangible Assets	$ 10.4	$ 10.4	0.0	0.0
Acquired Finite-lived Intangible Asset, Remaining Cash Payment Period		6 years
Private Brands
Indefinite-lived Intangible Assets [Line Items]
Impairment, goodwill			1,510.0	9.0
Impairment, intangible assets			43.9
Consumer Foods
Indefinite-lived Intangible Assets [Line Items]
Impairment, goodwill			20.9
Impairment, intangible assets			4.8
Goodwill		$ 3,814.8	3,824.6	3,850.9
Commercial Foods
Indefinite-lived Intangible Assets [Line Items]
Impairment, goodwill			0.0
Goodwill		719.0	720.0	697.7
Corporate
Indefinite-lived Intangible Assets [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)				3.2
Trademarks | Consumer Foods
Indefinite-lived Intangible Assets [Line Items]
Impairment, intangible assets		$ 50.1	$ 4.8	$ 72.7