XML 87 R76.htm IDEA: XBRL DOCUMENT v3.5.0.2
Net Income per Share - Additional Information (Detail) - shares
shares in Millions
3 Months Ended 6 Months Ended
Oct. 28, 2016
Oct. 30, 2015
Oct. 28, 2016
Oct. 30, 2015
Earnings Per Share [Abstract]        
Employee equity award plans 5 19 10 14