Business Segments (Revenues by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Aug. 26, 2017	May 27, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 26, 2017	Aug. 27, 2016	Aug. 29, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 454,936	$ 476,364	$ 370,510	$ 245,308	$ 263,254	$ 272,077	$ 225,672	$ 214,223	$ 1,547,119	$ 975,226	$ 976,505
Net revenues (percent)									100.00%	100.00%	100.00%
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 1,445,401	$ 940,230	$ 920,315
Net revenues (percent)									93.40%	96.40%	94.20%
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 101,718	$ 34,996	$ 56,190
Net revenues (percent)									6.60%	3.60%	5.80%