Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 27, 2016	Aug. 29, 2015	Aug. 30, 2014
Leases [Line Items]
Rental expense	$ 280,500	$ 269,500	$ 253,800
Deferred rent	121,700	113,700
Capital lease assets	148,500	132,300
Capital lease, accumulated amortization	59,500	63,700
Capital lease obligations	147,300	128,200
Current portion of capital lease obligations	44,834	$ 40,528
Remaining aggregate rental obligation	$ 2,106,257
Sublease in Connection with Sale of TruckPro Business [Member]
Leases [Line Items]
Initial term of subleased properties in connection with sale of TruckPro business	Not less than 20 years
Remaining aggregate rental obligation	$ 10,600