Stockholders' Equity (Activity Related to Our RSUs) (Details) (USD $) Share data in Millions, except Per Share data	12 Months Ended
Apr. 29, 2011	Apr. 30, 2010	Apr. 24, 2009
RSUs granted, Weighted Average Grant Date Fair Value	$ 15.86	$ 8.86	$ 6.17
RSUs issued in the Stock Option Exchange, Numbers of Shares	4.0
Restricted Stock Units [Member]
Beginning balance, Number of Shares	9.0	5.5	4.6
Beginning balance, Weighted Average Exercise Price	$ 23.92	$ 22.38	$ 26.30
RSUs granted, Number of Shares	4.7	3.1	2.2
RSUs granted, Weighted Average Grant Date Fair Value	$ 49.13	$ 29.32	$ 17.16
RSUs issued in the Stock Option Exchange, Numbers of Shares		3.2
RSUs issued in the Stock Option Exchange, Weighted Average Grant Date Fair Value		$ 21.73
RSUs vested, Number of Shares	(2.9)	(2.1)	(0.8)
RSUs vested, Weighted Average Grant Date Fair Value	$ 22.52	$ 24.64	$ 28.81
RSUs forfeitures and cancellations, Number of Shares	(0.7)	(0.7)	(0.5)
RSUs forfeitures and cancellations, Weighted Average Grant Date Fair Value	$ 27.57	$ 23.39	$ 25.48
Ending balance, Number of Shares	10.1	9.0	5.5
Ending balance, Weighted Average Exercise Price	$ 35.79	$ 23.92	$ 22.38

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Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Weighted Average Exercise Price

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Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period, Weighted Average Grant Date Fair Value

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(2)(c)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited.

+ References

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Net number of share options (or share units) granted during the period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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-SubTopic 10
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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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The number of shares newly issued during the reporting period under the plan.

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