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DERIVATIVE FINANCIAL INSTRUMENTS Narrative (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Jul. 28, 2013
Jul. 29, 2012
Derivative [Line Items]    
Derivative, Collateral, Right to Reclaim Cash $ 80.7  
Credit Exposure on Non-Exchange Traded Derivative Contracts, Excluding the Effects of Netting Arrangements 8.1  
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax (44.8)  
Tax On Deferred Gains (Losses) in Accumulated Other Comprehensive Income (Loss) (28.2)  
Gains (Losses) Recognized on Closed Commodity Derivative Contracts As the Underlying Cash Transactions Affected Earnings 2.1 3.4
Gains (Losses) on Derivative Contracts Representing the Differences Between Spot and Futures Prices Which are Excluded from the Assessment of Effectiveness and Recorded Directly Into Earnings 0 (6.3)
Scenario, Forecast [Member] | Commodity Contract [Member]
    
Derivative [Line Items]    
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months (2.2)  
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax $ (1.3)