Summary of Significant Accounting Policies - Schedule of Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Aug. 25, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,346,579	$ 1,269,522
Less: accumulated depreciation	772,070	721,526
Total property, plant and equipment	574,509	547,996
Land, buildings and leasehold equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	527,419	496,966
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	565,319	534,469
Motor vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 253,841	$ 238,087