DERIVATIVE FINANCIAL INSTRUMENTS - (Details) - USD ($) $ in Millions	Feb. 26, 2017	May 29, 2016
Open commodity purchase contracts
DERIVATIVE FINANCIAL INSTRUMENTS
Notional amount	$ 29.3	$ 32.8
Open commodity sale contracts
DERIVATIVE FINANCIAL INSTRUMENTS
Notional amount	$ 49.2	$ 13.6

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant