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Business Combinations - Preliminary Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Millions
Apr. 29, 2016
Apr. 24, 2015
Apr. 25, 2014
Business Acquisition [Line Items]      
Goodwill $ 1,676 $ 1,027 $ 988
SolidFire      
Business Acquisition [Line Items]      
Cash 8    
Intangible assets 168    
Goodwill 649    
Other assets 56    
Total assets acquired 881    
Liabilities assumed (31)    
Total purchase price $ 850