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VARIABLE INTEREST ENTITIES (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2016 | May 29, 2016 | May 31, 2015
Variable Interest Entity [Line Items] |  |  |
Contingent put options general exercise period |  | 30 days |
Accrued put cost |  | $ 108,900,000 | $ 0
Lamb Weston BSW |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit |  | 2.00% |
Acquisition of equity interest in Lamb Weston |  | 49.99% |
Price at which Ochoa has the right to put its equity interest |  | $ 47,400,000 |
Balance of promissory note due from joint venture |  | 36,100,000 |
Line of credit with Lamb Weston BSW, maximum borrowing capacity |  | $ 15,000,000 |
Lamb Weston RDO |  |  |
Variable Interest Entity [Line Items] |  |  |
Acquisition of equity interest in Lamb Weston |  | 50.00% |
Investment in Lamb Weston, maximum exposure |  | $ 16,900,000 | $ 14,600,000
Owners' equity in capital structure of variable interest entity |  | 33,900,000 |
Term borrowings from banks in capital structure of Lamb Weston, RDO |  | 41,100,000 |
2032 Maturity | Lamb Weston BSW | Promissory Note |  |  |
Variable Interest Entity [Line Items] |  |  |
Debt Instrument, Face Amount | $ 30,000,000 |  |
2032 Maturity | Lamb Weston BSW | Fixed Rate Promissory Note |  |  |
Variable Interest Entity [Line Items] |  |  |
Interest rate | 4.34% |  |
Debt Instrument, Face Amount | $ 23,000,000 |  |
2032 Maturity | Lamb Weston BSW | Variable Rate Promissory Note |  |  |
Variable Interest Entity [Line Items] |  |  |
Debt Instrument, Face Amount | $ 7,000,000 |  |
LIBOR | Minimum | 2032 Maturity | Lamb Weston BSW | Variable Rate Promissory Note |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit | 1.90% |  |
LIBOR | Maximum | 2032 Maturity | Lamb Weston BSW | Variable Rate Promissory Note |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit | 2.30% |  |
Revolving Credit Facility |  |  |
Variable Interest Entity [Line Items] |  |  |
Line of credit facility, amount outstanding |  | 0 |
Revolving Credit Facility | Lamb Weston BSW |  |  |
Variable Interest Entity [Line Items] |  |  |
Debt Instrument, Face Amount | $ 10,000,000 |  |
Line of credit facility, amount outstanding |  | $ 1,000,000 |
Revolving Credit Facility | LIBOR |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit |  | 1.25% |
Revolving Credit Facility | LIBOR | Minimum | Lamb Weston BSW |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit | 1.75% |  |
Revolving Credit Facility | LIBOR | Maximum | Lamb Weston BSW |  |  |
Variable Interest Entity [Line Items] |  |  |
Basis points borrowing under the lines of credit | 2.00% |  |
Loss on Lease Put Option |  |  |
Variable Interest Entity [Line Items] |  |  |
Estimate of possible loss |  | $ 58,500,000 |
Accrued put cost |  | $ 9,300,000 |

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