DERIVATIVE FINANCIAL INSTRUMENTS Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 29, 2012	Jul. 31, 2011
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 72.5
Derivative, Collateral, Obligation to Return Cash	70.9
Credit Exposure on Non-Exchange Traded Derivative Contracts, Excluding the Effects of Netting Arrangements	39.7
Credit Exposure on Non-Exhange Traded Derivative Contracts, Including the Effects of Netting Arrangements	33.7
Gain (Loss) Recognized in Income as a Result of Cash Flow Hedge De-Designation		12.0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	110.4
Tax On Deferred Gains (Losses) in Accumulated Other Comprehensive Income (Loss)	70.2
Gains (Losses) Recognized on Closed Commodity Derivative Contracts As the Underlying Cash Transactions Affected Earnings	3.4	5.9
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	(6.3)	5.7
Scenario, Forecast [Member] | Commodity Contract [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	82.0
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax	$ 50.1