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Equity - Additional Information - Dividends (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Nov. 22, 2020
Nov. 24, 2019
Dividends Payable [Line Items]    
Dividends declared $ 0.70 $ 0.65
Dividend Rate    
Dividends Payable [Line Items]    
Dividends declared 0.70  
SpecialDividendsPayable [Member]    
Dividends Payable [Line Items]    
Dividends declared $ 10.00  
Dividends payable $ 4,430