Summary of Significant Accounting Policies - Schedule of Impact of New Accounting Pronouncements on Consolidated Statement of Income (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
		Aug. 31, 2019	May 25, 2019	Feb. 23, 2019	Nov. 24, 2018	Aug. 25, 2018	May 26, 2018	Feb. 24, 2018	Nov. 25, 2017	Aug. 31, 2019	Aug. 25, 2018	Aug. 26, 2017
Operating expenses:
Selling and administrative expenses	[1]									$ 334,840	$ 360,727	$ 342,407
Total operating expenses										1,577,368	1,514,113	1,480,675
Operating income										232,008	182,376	110,283
Income before income taxes		$ 60,870	$ 61,700	$ 63,395	$ 51,959	$ 42,853	$ 47,792	$ 43,568	$ 53,033	237,924	187,246	115,123
Provision for income taxes		14,882	14,480	15,789	13,639	7,901	11,433	(14,810)	18,827	58,790	23,351	44,927
Net income		$ 45,988	$ 47,220	$ 47,606	$ 38,320	$ 34,952	$ 36,359	$ 58,378	$ 34,206	$ 179,134	$ 163,895	$ 70,196
As reported - Diluted (in dollars per share)										$ 9.33	$ 8.21	$ 3.44
Under Historical Guidance
Operating expenses:
Selling and administrative expenses										$ 341,795
Total operating expenses										1,584,323
Operating income										225,053
Income before income taxes										230,969
Provision for income taxes										57,010
Net income										$ 173,959
As reported - Diluted (in dollars per share)										$ 9.06
Impact of Adopting New Revenue Standard | Accounting Standards Update 2014-09
Operating expenses:
Selling and administrative expenses										$ (6,955)
Total operating expenses										(6,955)
Operating income										6,955
Income before income taxes										6,955
Provision for income taxes										1,780
Net income										$ 5,175
As reported - Diluted (in dollars per share)										$ 0.27

[1] Exclusive of depreciation on the Company’s property, plant and equipment and amortization of its intangible assets.