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Business Combinations - Preliminary Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($)
$ in Millions
Apr. 27, 2018
Apr. 28, 2017
Apr. 29, 2016
Business Acquisition [Line Items]      
Goodwill $ 1,739 $ 1,684 $ 1,676
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