Condensed Consolidated Statement Of Shareholders' Equity - 6 months ended Feb. 27, 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
Exercise of common stock options, including income tax deficiencies, Shares			23								23
Exercise of common stock options, including income tax deficiencies, Value							582				$ 582
Common stock issued under associate stock purchase plan, Shares										(35)
Common stock issued under associate stock purchase plan, Value							674			$ 1,308	1,982
Issuance of restricted common stock, net of cancellations, Shares			(7)
Stock-based compensation							6,999				6,999
Purchase of treasury stock, Shares										335
Purchase of treasury stock, Value										$ (19,212)	(19,212)
Cash dividends on common stock		$ (41,514)	$ (41,514)		$ (11,434)	$ (11,434)
Dividend equivalent units declared								(225)			(225)
Foreign currency translation adjustment									(3,394)		(3,394)
Net income								104,554			104,554
Balance, Value at Feb. 27, 2016	$ 56			$ 13			$ 613,160	$ 1,283,762	$ (20,646)	$ (505,137)	$ 1,371,208
Balance, Shares at Feb. 27, 2016			56,416			13,296				8,338