G & K Services, Inc. Transaction and Integration Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. transaction and integration expenses	$ 41,897	$ 79,224	$ 0
Asset impairment charge	0	23,331	$ 0
G & K Services
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. transaction and integration expenses	41,900	79,200
Asset impairment charge		23,300
Business acquisition and integration expenses		55,900
Legal and professional fees		17,400
Employee termination benefits		31,000
Inventory write-down		5,500
Other expenses		2,000
Employee termination benefits paid	15,200	6,700
Related severance liability	$ 9,100	$ 24,300