FAIR VALUE MEASUREMENTS - Fair Value Hierarchy (Details) - Recurring - USD ($) $ in Millions	Aug. 25, 2019	May 26, 2019
Assets:
Deferred compensation assets	$ 0.5	$ 0.5
Derivative assets	0.3	0.4
Total assets	0.8	0.9
Liabilities:
Derivative liabilities	1.6	3.8
Deferred compensation liabilities	17.7	15.1
Total liabilities	19.3	18.9
Level 1
Assets:
Deferred compensation assets	0.5	0.5
Total assets	0.5	0.5
Level 2
Assets:
Derivative assets	0.3	0.4
Total assets	0.3	0.4
Liabilities:
Derivative liabilities	1.6	3.8
Deferred compensation liabilities	17.7	15.1
Total liabilities	$ 19.3	$ 18.9