G & K Services, Inc. Transaction and Integration Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2015
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. transaction and integration expenses	$ 79,224	$ 0	$ 0
Asset impairment charge	23,331	$ 0	$ 0
G & K Services
Business Combination, Separately Recognized Transactions [Line Items]
G&K Services, Inc. transaction and integration expenses	79,200
Business acquisition and integration expenses	55,900
Asset impairment charge	23,300
Legal and professional fees	17,400
Employee termination benefits	31,000
Inventory write-down	5,500
Other expenses	2,000
Employee termination benefits	6,700
Related severance liability	$ 24,300