INVESTMENTS IN JOINT VENTURES - Variable Interest Entity - Not Consolidated (Details) - USD ($) $ in Millions	3 Months Ended
Aug. 27, 2017	Aug. 28, 2016	May 28, 2017
Investments in Joint Ventures
Equity method investments	$ 196.0		$ 178.6
Stockholders' equity	$ (575.7)		(647.2)
Lamb Weston RDO
Investments in Joint Ventures
Ownership interest (as a percent)	50.00%
Equity method investments	$ 17.8		17.2
Term borrowings from banks	42.3		59.3
Selling, general and administrative \| Lamb Weston RDO
Investments in Joint Ventures
Fees received	3.5	$ 3.5
Lamb Weston RDO
Investments in Joint Ventures
Stockholders' equity	$ 35.6		$ 34.4

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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