Income Taxes - Reconciliation of Provision for Income Taxes (Details)	12 Months Ended
	Aug. 29, 2020	Aug. 31, 2019	Aug. 25, 2018
Income Tax Disclosure [Abstract]
Income taxes at the statutory federal income tax rate	21.00%	21.00%	25.90%
State income taxes	4.40%	4.30%	4.10%
Other	(1.70%)	(0.60%)	(2.80%)
Deemed Repatriation of Non—U.S. Earnings, net foreign tax credits and other (collectively, Transition Tax)	0	0	1.4
Impact of U.S. tax reform federal tax rate reduction			(16.10%)
Total	23.70%	24.70%	12.50%