Derivative Instruments And Hedging Activities (Notional Values Of Derivative Contracts Designated And Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	Nov. 25, 2012	May 27, 2012
Designated as Hedging Instruments | Commodities
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 10.9	$ 8.7
Designated as Hedging Instruments | Foreign currency
Derivatives, Fair Value [Line Items]
Derivative contracts	10.4	19.4
Designated as Hedging Instruments | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative contracts	100.0	550.0
Designated as Hedging Instruments | Equity Forwards
Derivatives, Fair Value [Line Items]
Derivative contracts	30.7	21.7
Not Designated as Hedging Instruments | Equity Forwards
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 45.1	$ 50.0