XML 121 R106.htm IDEA: XBRL DOCUMENT v3.20.1
Net Income per Share - Additional Information (Detail) - shares
shares in Millions
12 Months Ended
Apr. 24, 2020
Apr. 26, 2019
Apr. 27, 2018
Earnings Per Share [Abstract]      
Outstanding employee equity awards excluded from diluted net income per share calculations 4 1 1