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INVESTMENTS Equity in (Income) Loss of Equity Method Investments (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Oct. 30, 2011
Oct. 31, 2010
Oct. 30, 2011
Oct. 31, 2010
Schedule of Equity Method Investments [Line Items]        
Equity in (income) loss of affiliates $ (5.9) $ (18.2) $ (10.7) $ (29.1)
Campofrio Food Group [Member]
        
Schedule of Equity Method Investments [Line Items]        
Equity in (income) loss of affiliates (4.0) [1] (7.7) [1] (4.2) [1] (10.9) [1]
Equity Method Investment, Additional Information International      
Mexican Joint Ventures [Member]
        
Schedule of Equity Method Investments [Line Items]        
Equity in (income) loss of affiliates (1.9) (10.9) (4.9) (15.8)
Equity Method Investment, Additional Information International      
Other Equity Method Investments [Member]
        
Schedule of Equity Method Investments [Line Items]        
Equity in (income) loss of affiliates $ 0 $ 0.4 $ (1.6) $ (2.4)
Equity Method Investment, Additional Information Various      
[1] CFG prepares its financial statements in accordance with International Financial Reporting Standards. Our share of CFG’s results reflects U.S. GAAP adjustments and thus, there may be differences between the amounts we report for CFG and the amounts reported by CFG.