Acquisitions - Schedule of Preliminary Valuation and Amortization Period of Identifiable Intangible Assets (Details) - USD ($) $ in Thousands		6 Months Ended
	Mar. 21, 2017	Nov. 30, 2017
Business Acquisition [Line Items]
Intangible assets acquired		$ 976
G&K Services
Business Acquisition [Line Items]
Intangible assets acquired	$ 536,000
Service contracts | G&K Services
Business Acquisition [Line Items]
Intangible assets acquired	$ 519,000
Amortization period (in years)	15 years
Trade names | G&K Services
Business Acquisition [Line Items]
Intangible assets acquired	$ 17,000
Amortization period (in years)	3 years