G & K Services, Inc. Integration Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. integration expenses	$ 0	$ 14,410	$ 41,897
Facility closure expenses		16,900
Employee terminations costs		(2,500)
G & K Services
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. integration expenses	0	14,400	41,900
G & K Services | Employee termination benefits
Business Combination, Separately Recognized Transactions [Line Items]
Payments for restructuring	$ 700	3,800	$ 15,200
Restructuring liability		$ 2,800