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Stock Repurchase Program - Summarize Company's Share Repurchase Activity (Detail) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended 236 Months Ended
Aug. 26, 2017
Aug. 27, 2016
Aug. 29, 2015
Aug. 26, 2017
Equity [Abstract]        
Amount $ 1,071,649 $ 1,452,462 $ 1,271,416  
Shares 1,495 1,903 2,010 142,300