STOCKHOLDERS' EQUITY - Reclassifications from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
May 28, 2017	May 29, 2016	May 31, 2015
STOCKHOLDERS' EQUITY
Reclassification of pension and post-retirement benefits out of accumulated other comprehensive income (loss), before tax	$ 0.0	$ 5.3	$ 0.0
Reclassification of pension and post-retirement benefits out of accumulated other comprehensive income (loss), after tax		$ 4.0

Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit) for pension and other postretirement defined benefit plans.

No definition available.

Name:	us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration