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Equity and Comprehensive Income - Additional Information - Dividends (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 8 Months Ended
May 07, 2017
May 08, 2016
May 07, 2017
May 08, 2016
Dividends Payable [Line Items]        
Dividends declared $ 7.50 $ 0.45 $ 8.40 $ 1.25
Payments of Dividends     $ 396 $ 352
Dividend Rate        
Dividends Payable [Line Items]        
Dividends declared 0.50 $ 0.45    
Special Dividend [Member]        
Dividends Payable [Line Items]        
Dividends declared $ 7.00      
Special Dividends Paid $ 3,290