VARIABLE INTEREST ENTITIES (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 25, 2013	May 26, 2013
Variable Interest Entity [Line Items]
Libor Plus	2.00%
Price at which Ochoa has the right to put its equity interest	$ 39.8
Balance of promissory note due from joint venture	36.1
Long-term debt interest rate	3.25%
Line of credit with Lamb Weston BSW, Maximum Borrowing Capacity	15.0
Lamb Weston BSW
Variable Interest Entity [Line Items]
Acquisition of equity interest in Lamb Weston	49.99%
Lamb Weston RDO
Variable Interest Entity [Line Items]
Acquisition of equity interest in Lamb Weston	50.00%
Investment in Lamb Weston, maximum exposure	14.6	15.2
Owners' equity in capital structure of variable interest entity	29.1
Term borrowings from banks in capital structure of Lamb Weston, RDO	$ 43.9