INVESTMENTS IN JOINT VENTURES - Agreement - Related Party Information (Details) - Equity Method Investee - Lamb-Weston Meijer v.o.f. $ in Millions	9 Months Ended
Feb. 28, 2021 USD ($) payment	May 31, 2020 USD ($)
Related Party Transactions
Number of annual payments \| payment	5
Accounts receivable
Accounts receivable	$ 12.6	$ 12.0
Accounts receivable, current	0.2	1.8
Accounts receivable, noncurrent	$ 12.4	$ 10.2

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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