Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 29, 2020	Aug. 31, 2019	Sep. 01, 2018
Income Taxes [Abstract]
Current: Federal	$ 59,574	$ 66,161	$ 85,205
Current: State and local	14,564	16,239	16,108
Current: Total	74,138	82,400	101,313
Deferred: Federal	7,263	10,622	(27,372)
Deferred: State and local	1,091	1,310	3,025
Deferred: Total	8,354	11,932	(24,347)
Total	$ 82,492	$ 94,332	$ 76,966

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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