Condensed Consolidated Statement Of Shareholders' Equity - 9 months ended May 28, 2016 - USD ($) shares in Thousands, $ in Thousands	Class A Common Stock [Member] Common Stock [Member]	Class A Common Stock [Member] Retained Earnings [Member]	Class A Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Retained Earnings [Member]	Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Class A Treasury Stock [Member]	Total
Balance, Value at Aug. 29, 2015	$ 56			$ 13			$ 604,905	$ 1,232,381	$ (17,252)	$ (487,233)	$ 1,332,870
Balance, Shares at Aug. 29, 2015			56,400			13,296				8,038
Exchange of Class B common stock for Class A common stock, Shares			211			(211)
Exercise of common stock options, Shares			99								99
Exercise of common stock options, Value	1						5,080				$ 5,081
Common stock issued under associate stock purchase plan, Shares										(48)
Common stock issued under associate stock purchase plan, Value							1,090			$ 1,806	2,896
Issuance of restricted common stock, net of cancellations, Shares			(9)
Stock-based compensation							10,302				10,302
Purchase of treasury stock, Shares										335
Purchase of treasury stock, Value										$ (19,372)	(19,372)
Cash dividends on common stock		$ (62,199)	$ (62,199)		$ (17,152)	$ (17,152)
Dividend equivalent units declared								(343)			(343)
Foreign currency translation adjustment									(838)		(838)
Net income								169,370			169,370
Balance, Value at May. 28, 2016	$ 57			$ 13			$ 621,377	$ 1,322,057	$ (18,090)	$ (504,799)	$ 1,420,615
Balance, Shares at May. 28, 2016			56,701			13,085				8,325