Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Apr. 24, 2015	Apr. 25, 2014
Condensed Consolidated Balance Sheets (Parenthetical) [Abstract]
Allowances for accounts receivable	$ 144	$ 115
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.10
Common stock, shares authorized	2,600,000,000	1,600,000,000
Common stock, shares issued	1,421,648,005	998,999,125
Common stock, shares outstanding	1,421,648,005	998,999,125