Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019		Aug. 25, 2018	Aug. 26, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 179,134		$ 163,895	$ 70,196
Other comprehensive (loss) income:
Foreign currency translation adjustments	(3,524)		(5,184)	4,882
Pension benefit liabilities, net of income taxes	(5,104)	[1]	1,342	2,774	[1]
Change in fair value of derivatives, net of income taxes	252		247	(45)
Derivative financial instruments reclassified to earnings	(153)		(46)	(180)
Other comprehensive (loss) income	(8,529)		(3,641)	7,431
Comprehensive income	$ 170,605		$ 160,254	$ 77,627

[1] These amounts are shown net of the effect of income taxes.