CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Millions	Total USD ($)	Common Stock USD ($)	Common Stock Put Option	Common Stock Warrant	Additional Paid-in Capital USD ($)	Treasury Stock USD ($)	Retained Earnings USD ($)	Accumulated Other Comprehensive Income USD ($)
Balances at Apr. 29, 2011	$ 3,730.2	$ 0.5			$ 3,970.3	$ (2,927.4)	$ 2,674.0	$ 12.8
Balances (in shares) at Apr. 29, 2011						(104.3)
Balances (in shares) at Apr. 29, 2011		473.3
Net income	605.4	0			0		605.4	0
Other comprehensive income, net	(7.9)	0			0		0	(7.9)
Reclassification of equity component of Convertible Notes	52.0	0			52.0		0	0
Issuance of common stock under employee stock plans, net of taxes (in shares)		10.2
Issuance of common stock under employee stock plans, net of taxes	148.8	0			148.8		0	0
Repurchase of common stock and forward contract, shares	(14.6)	(14.6)				0
Repurchase of common stock and forward contract	(600.0)	0			(125.9)	0	(474.1)	0
Stock-based compensation	257.6	0			257.6		0	0
Income tax benefit from employee stock transactions	107.5	0			107.5		0	0
Balances at Apr. 27, 2012	4,293.6	0.5			4,410.3	(2,927.4)	2,805.3	4.9
Balances (in shares) at Apr. 27, 2012						(104.3)
Balances (in shares) at Apr. 27, 2012		468.9
Net income	505.3	0			0		505.3	0
Other comprehensive income, net	3.8	0			0		0	3.8
Reclassification of equity component of Convertible Notes	62.6	0			62.6		0	0
Issuance of common stock under employee stock plans, net of taxes (in shares)		10.1
Issuance of common stock under employee stock plans, net of taxes	110.6	0			110.6		0	0
Repurchase of common stock and forward contract, shares	(18.1)	(18.1)				0
Repurchase of common stock and forward contract	(590.0)	0			(176.2)	0	(413.8)	0
Stock-based compensation	276.6	0			276.6		0	0
Income tax benefit from employee stock transactions	53.8	0			53.8		0	0
Vested options assumed in acquisition (in shares)		0
Vested options assumed in acquisition	1.2	0			1.2		0	0
Balances at Apr. 26, 2013	4,717.5	0.5			4,738.9	(2,927.4)	2,896.8	8.7
Balances (in shares) at Apr. 26, 2013						(104.3)
Balances (in shares) at Apr. 26, 2013		460.9
Net income	637.5	0			0		637.5	0
Other comprehensive income, net	0.4	0			0		0	0.4
Issuance of common stock under employee stock plans, net of taxes (in shares)		13.1
Issuance of common stock under employee stock plans, net of taxes	201.4	0			201.4		0	0
Conversion of convertible notes		4.9
Exercise of convertible note hedges and warrants			(3.9)	1.1
Repurchase of common stock and forward contract, shares	(47.3)	(47.3)				0
Repurchase of common stock and forward contract	(1,881.5)	(0.1)			(813.4)	0	(1,068.0)	0
Retirement of treasury stock (in shares)	104.3	(104.3)				104.3
Retirement of treasury stock	0	(0.1)			(614.0)	2,927.4	(2,313.3)	0
Stock-based compensation	273.0	0			273.0		0	0
Income tax benefit from employee stock transactions	40.5	0			40.5		0	0
Cash dividends declared ($0.60 per common share)	(202.3)	0			(50.4)		(151.9)	0
Balances at Apr. 25, 2014	$ 3,786.5	$ 0.3			$ 3,776.0	$ 0	$ 1.1	$ 9.1
Balances (in shares) at Apr. 25, 2014						0
Balances (in shares) at Apr. 25, 2014		324.5