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Employee Benefits And Deferred Compensation (Schedule Of Amounts Recognized In Balance Sheet) (Details) (USD $)
In Millions, unless otherwise specified
Apr. 27, 2012
Apr. 29, 2011
Employee Benefits And Deferred Compensation [Abstract]    
Other long-term liabilities $ 22.2 $ 12.4
Accumulated other comprehensive income $ (4.4) $ 0