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Subsequent Event - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Nov. 03, 2016
Oct. 28, 2016
Oct. 30, 2015
Oct. 28, 2016
Oct. 30, 2015
Subsequent Event [Line Items]          
Net charges   $ 0 $ 1 $ 0 $ 28
Subsequent Event          
Subsequent Event [Line Items]          
Reduction of global work force 6.00%        
Subsequent Event | Minimum          
Subsequent Event [Line Items]          
Net charges $ 50        
Subsequent Event | Maximum          
Subsequent Event [Line Items]          
Net charges $ 60