XML 122 R105.htm IDEA: XBRL DOCUMENT v2.4.1.9
Net Income per Share - Anti-Dilutive Shares Excluded from Calculation of Net Income Per Share (Detail)
In Millions, unless otherwise specified
12 Months Ended
Apr. 24, 2015
Apr. 25, 2014
Apr. 26, 2013
Earnings Per Share [Abstract]      
Employee equity award plans 7.8us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 6.4us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 15.1us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount