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Derivative Financial Instruments (Effect Of Interest Rate And Foreign Currency Contracts On The Consolidated Statements Of Income) (Details) (Other Income (Expense) [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010
Interest Rate Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other income (expense), net	$ 0	$ 0	$ 0	$ 0
Foreign Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other income (expense), net	$ 0	$ (2.0)	$ 0	$ (1.9)

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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