Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Associate Incentive Plans [Member] Class A Common Stock [Member] Common Stock [Member]	Associate Incentive Plans [Member] Additional Paid-In Capital [Member]	Associate Incentive Plans [Member] Treasury Stock [Member]	Class A Common Stock [Member] Common Stock [Member]	Class A Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member]	Class A Common Stock [Member] Retained Earnings [Member] Special Dividends [Member]	Class A Common Stock [Member] Treasury Stock [Member]	Class A Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member]	Class B Common Stock [Member] Retained Earnings [Member] Special Dividends [Member]	Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance, Value at Sep. 01, 2018				$ 55					$ 10				$ 657,749	$ 1,325,822	$ (19,634)	$ (576,748)
Issuance of Noncontrolling Interest																		4,637
Capital Contributions																		1,022
Foreign Currency Translation Adjustment															(3,142)			(262)	$ (3,404)
Net Income (Loss)														288,865				(68)	288,865
Associate Incentive Plans		$ 34,138	$ 2,813
Repurchase and retirement of Class A common stock, Value				(1)									(11,887)	(48,439)
Repurchase of Class A common stock, Value							$ (24,284)
Retirement of treasury stock, Value				(8)									(20,774)	(472,830)		493,612
Exchange of Class B common stock for Class A common stock, value
Cash dividends declared on Common Stock					$ (118,798)					$ (26,911)
Dividend equivalents declared, net of cancellations														(1,058)
Balance, Value at Aug. 31, 2019				46					10				659,226	946,651	(22,776)	(104,607)	$ 1,478,550	5,329	1,483,879
Dividends declared per Common Share								$ 2.64				$ 2.64
Issuance of Noncontrolling Interest
Capital Contributions
Foreign Currency Translation Adjustment															1,358			(342)	1,016
Net Income (Loss)														251,117				641	251,117
Associate Incentive Plans	1	31,513	4,103
Repurchase and retirement of Class A common stock, Value
Repurchase of Class A common stock, Value							(3,444)
Retirement of treasury stock, Value
Exchange of Class B common stock for Class A common stock, value
Cash dividends declared on Common Stock					(136,258)	(226,984)				(30,279)	(50,650)
Dividend equivalents declared, net of cancellations														(4,082)
Balance, Value at Aug. 29, 2020				47					10				690,739	749,515	(21,418)	(103,948)	1,314,945	5,628	1,320,573
Dividends declared per Common Share								8.00				8.00
Issuance of Noncontrolling Interest																		3,825
Capital Contributions																		100
Foreign Currency Translation Adjustment															3,434			418	3,852
Net Income (Loss)														216,907				1,030	216,907
Associate Incentive Plans		$ 50,251	$ 3,359
Repurchase and retirement of Class A common stock, Value													(123)	(67,343)
Repurchase of Class A common stock, Value							$ (3,795)
Retirement of treasury stock, Value
Exchange of Class B common stock for Class A common stock, value				1					(1)
Cash dividends declared on Common Stock					$ (140,296)	$ (163,511)				$ (27,003)	$ (31,840)
Dividend equivalents declared, net of cancellations														(4,114)
Balance, Value at Aug. 28, 2021				$ 48					$ 9				$ 740,867	$ 532,315	$ (17,984)	$ (104,384)	$ 1,150,871	$ 11,001	$ 1,161,872
Dividends declared per Common Share								$ 6.50				$ 6.50