BUSINESS SEGMENTS AND RELATED INFORMATION - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended	24 Months Ended
	Aug. 26, 2018 USD ($) segment	Aug. 27, 2017 USD ($)	May 27, 2018	May 27, 2018 USD ($)
Revenue, Major Customer [Line Items]
Number of reportable segments | segment	4
Cumulative net derivative losses from economic hedges recognized in general corporate expenses	$ (3.2)
Net losses incurred	6.2
Net gain incurred in prior fiscal years				$ 3.0
Losses expected to be reclassified	2.5
Losses expected to be reclassified in fiscal 2019 and thereafter	0.7
Total depreciation expense	55.4	$ 56.1
Net sales	1,834.4	$ 1,804.2
Accounts payable to suppliers who utilize third-party service	$ 102.7
Customer concentration risk | Wal-Mart Stores, Inc. and affiliates | Net sales
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)	25.00%	24.00%
Customer concentration risk | Wal-Mart Stores, Inc. and affiliates | Net receivables
Revenue, Major Customer [Line Items]
Concentration risk (as a percent)	27.00%		25.00%
Non-US
Revenue, Major Customer [Line Items]
Net sales	$ 211.9	$ 207.7