BUSINESS SEGMENTS AND RELATED INFORMATION - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Feb. 26, 2017 USD ($)	Feb. 28, 2016	Feb. 26, 2017 USD ($) segment	Feb. 28, 2016	May 29, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			5
Cumulative net derivative gains from economic hedges recognized in general corporate expenses	$ 2.5		$ 2.5
Net gains incurred			2.3
Derivative gains incurred in prior fiscal years					$ 0.2
Gains expected to be reclassified			3.2
Losses expected to be reclassified in later fiscal years			0.7
Revenue, Major Customer [Line Items]
Accounts payable to suppliers who utilize third-party service	$ 11.8		$ 11.8
Customer concentration risk | Net sales | Wal-Mart Stores, Inc. and affiliates
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)	24.00%	23.00%	24.00%	23.00%
Customer concentration risk | Net receivables | Wal-Mart Stores, Inc. and affiliates
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)			24.00%		24.00%