DERIVATIVE FINANCIAL INSTRUMENTS Narrative (Details) (USD $) In Millions	3 Months Ended
	Jul. 31, 2011	Aug. 01, 2010
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 51.2
Derivative, Collateral, Obligation to Return Cash	16.9
Credit Exposure on Non-Exchange Traded Derivative Contracts, Excluding the Effects of Netting Arrangements	28.7
Credit Exposure on Non-Exhange Traded Derivative Contracts, Including the Effects of Netting Arrangements	20.2
Gain (Loss) Recognized in Income as a Result of Cash Flow Hedge De-Designation	12.0
Deferred Net Gain (Losses) in Accumulated Other Comprehensive Income (Loss)	20.0
Tax On Deferred Gains (Losses) in Accumulated Other Comprehensive Income (Loss)	(12.6)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	32.1
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax	19.6
Gains (Losses) Recognized on Closed Commodity Derivative Contracts As the Underlying Cash Transactions Affected Earnings	5.9	(22.1)
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	$ 5.7	$ 8.7