Goodwill and Other Intangible Assets - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Thousands	Aug. 26, 2017	Aug. 27, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 242,960	$ 196,787
Accumulated Amortization	171,216	158,123
Net Carrying Amount	71,744	38,664
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	208,711	165,405
Accumulated Amortization	141,226	129,551
Net Carrying Amount	67,485	35,854
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	34,249	31,382
Accumulated Amortization	29,990	28,572
Net Carrying Amount	$ 4,259	$ 2,810