G&K Services, Inc. Integration Expenses (Details) - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018	May 31, 2019
Business Acquisition [Line Items]
Integration related costs	$ 0	$ 7,847,000	$ 0	$ 12,697,000
G&K Services
Business Acquisition [Line Items]
Integration related costs	0	7,800,000	0	12,700,000
Accrued employee termination benefits	2,500,000		2,500,000		$ 2,800,000
Payments for employee termination benefits	$ 200,000	$ 900,000	$ 300,000	$ 3,300,000