GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Schedule of Change in Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Feb. 26, 2017 USD ($)
Goodwill
Balance as of beginning of period	$ 4,396.2
Impairment	(183.1)
Acquisitions	38.7
Currency translation	(0.1)
Balance as of end of period	4,251.7
Grocery & Snacks
Goodwill
Balance as of beginning of period	2,337.4
Impairment	0.0
Acquisitions	38.7
Currency translation	0.0
Balance as of end of period	2,376.1
Refrigerated & Frozen
Goodwill
Balance as of beginning of period	1,028.9
Impairment	0.0
Acquisitions	0.0
Currency translation	(0.6)
Balance as of end of period	1,028.3
International
Goodwill
Balance as of beginning of period	448.6
Impairment	(183.1)
Acquisitions	0.0
Currency translation	0.5
Balance as of end of period	266.0
Foodservice
Goodwill
Balance as of beginning of period	581.3
Impairment	0.0
Acquisitions	0.0
Currency translation	0.0
Balance as of end of period	$ 581.3