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Stockholders' Equity (Additional Information Related To Stock Options) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Jan. 27, 2012
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Jan. 28, 2011
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Jan. 27, 2012
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Jan. 28, 2011
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| Stockholders' Equity [Abstract] | ||||
| Weighted-average fair value per share granted | $ 13.26 | $ 18.79 | $ 16.88 | $ 15.72 |
| Weighted-average fair value per share of options assumed in acquisition | $ 21.15 | |||
| Intrinsic value of options exercised | $ 21.0 | $ 79.4 | $ 71.6 | $ 294.0 |
| Proceeds received from the exercise of stock options | 19.5 | 53.9 | 62.2 | 278.8 |
| Fair value of options vested | $ 18.1 | $ 23.1 | $ 56.8 | $ 77.5 |
| X | ||||||||||
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- Definition
Business Acquisition Cost Of Acquired Entity Fair Value Per Share Equity Interests Issued And Issuable No definition available.
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- Definition
Share based compensation arrangement by share based payment award options vested in period total fair value No definition available.
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- Definition
The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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