STOCK-BASED COMPENSATION - Unrecognized Compensation Expense (Details) $ in Millions	6 Months Ended
	Nov. 28, 2021 USD ($)
Unrecognized compensation expense, net of estimated forfeitures
Unrecognized compensation expense	$ 36.8
Remaining weighted average recognition period	2 years 1 month 6 days
Restricted Stock Units (RSUs)
Unrecognized compensation expense, net of estimated forfeitures
Unrecognized compensation expense	$ 29.3
Remaining weighted average recognition period	2 years 1 month 6 days
Performance shares
Unrecognized compensation expense, net of estimated forfeitures
Unrecognized compensation expense	$ 7.5
Remaining weighted average recognition period	1 year 10 months 24 days