Fair Value Measurements - Company's Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Nov. 18, 2017	Aug. 26, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	$ 125,115	$ 100,873
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	43,034	18,573
Other long-term assets	82,081	82,300
Total	125,115	100,873
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	42,587	18,453
Other long-term assets	54,467	53,319
Total	97,054	71,772
Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other current assets	447	120
Other long-term assets	27,614	28,981
Total	$ 28,061	$ 29,101