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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Aug. 31, 2019
Aug. 25, 2018
Aug. 26, 2017
Statement of Stockholders' Equity [Abstract]      
Common Stock, Dividends, Per Share, Declared $ 0.43 $ 0.40 $ 0.40