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Consolidated Statements of Equity (Parenthetical) (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Apr. 28, 2013
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Apr. 29, 2012
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Apr. 27, 2011
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| Statement of Stockholders' Equity [Abstract] | |||
| Preferred stock dividend, per share | $ 1.70 | $ 1.70 | $ 1.70 |
| Common stock dividend, per share | $ 2.06 | $ 1.92 | $ 1.80 |