CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Apr. 25, 2014	Apr. 26, 2013
Accounts receivable, allowances	$ 1.7	$ 4.2
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5.0	5.0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	885.0	885.0
Common stock, shares issued	324.5	460.9
Treasury stock, shares	0	104.3