XML 57 R46.htm IDEA: XBRL DOCUMENT v3.3.1.900
Balance Sheet Details - Cash and Cash Equivalents (Detail) - USD ($)
$ in Millions
Jan. 29, 2016
Apr. 24, 2015
Jan. 23, 2015
Apr. 25, 2014
Cash And Cash Equivalents [Abstract]        
Cash $ 2,347 $ 1,666    
Cash equivalents 148 256    
Cash and cash equivalents $ 2,495 $ 1,922 $ 2,540 $ 2,291