Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 27, 2016	Aug. 29, 2015	Aug. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension liability adjustments, taxes	$ 11,394	$ 4,638	$ 8,287
Unrealized losses on marketable securities, taxes	79	55	54
Net derivative activities, taxes	315	68	$ 87
Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension liability adjustments, taxes	4,059	3,571
Net Unrealized Gain (Loss) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized losses on marketable securities, taxes	33	12
Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net derivative activities, taxes	$ 315	$ 68