Business Segments (Revenues by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Aug. 25, 2018	May 26, 2018	Feb. 24, 2018	Nov. 25, 2017	Aug. 26, 2017	May 27, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 25, 2018	Aug. 26, 2017	Aug. 27, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 536,188	$ 562,261	$ 468,359	$ 450,021	$ 454,936	$ 476,364	$ 370,510	$ 245,308	$ 2,016,829	$ 1,547,119	$ 975,226
Net revenues (percent)									100.00%	100.00%	100.00%
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 1,860,613	$ 1,445,401	$ 940,230
Net revenues (percent)									92.30%	93.40%	96.40%
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 156,216	$ 101,718	$ 34,996
Net revenues (percent)									7.70%	6.60%	3.60%