Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 230
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=SL94080555-108585

Name:	us-gaap_EquityMethodInvestmentDividendsOrDistributions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

INVESTMENTS IN JOINT VENTURES - Transactions with Ventures - Dividends Received (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 23, 2020	Feb. 24, 2019	Feb. 23, 2020	Feb. 24, 2019
Investments in Joint Ventures
Dividends received from equity method investments	$ 10.9	$ 9.8	$ 28.9	$ 35.4
Lamb-Weston RDO Frozen
Investments in Joint Ventures
Loss related to the withdrawal from a multiemployer pension plan	2.6		2.6
Lamb-Weston RDO Frozen \| Other Noncurrent Assets
Investments in Joint Ventures
Receivable from related party	$ 6.0		$ 6.0