GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Schedule of Change in Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
Feb. 25, 2018 USD ($)
Goodwill
Balance as of May 28, 2017	$ 4,295.3
Acquisitions	212.3
Purchase accounting adjustments	(1.5)
Currency translation	0.6
Balance as of February 25, 2018	4,506.7
Grocery & Snacks
Goodwill
Balance as of May 28, 2017	2,439.1
Acquisitions	155.3
Purchase accounting adjustments	(1.5)
Currency translation	0.0
Balance as of February 25, 2018	2,592.9
Refrigerated & Frozen
Goodwill
Balance as of May 28, 2017	1,037.3
Acquisitions	57.0
Purchase accounting adjustments	0.0
Currency translation	1.4
Balance as of February 25, 2018	1,095.7
International
Goodwill
Balance as of May 28, 2017	247.8
Acquisitions	0.0
Purchase accounting adjustments	0.0
Currency translation	(0.8)
Balance as of February 25, 2018	247.0
Foodservice
Goodwill
Balance as of May 28, 2017	571.1
Acquisitions	0.0
Purchase accounting adjustments	0.0
Currency translation	0.0
Balance as of February 25, 2018	$ 571.1

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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