Derivative Instruments And Hedging Activities (Notional Values Of Derivative Contracts Designated And Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	Feb. 24, 2013	May 27, 2012
Designated as Hedging Instruments | Commodities
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 7.3	$ 8.7
Designated as Hedging Instruments | Foreign currency
Derivatives, Fair Value [Line Items]
Derivative contracts	5.2	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	27.8	21.7
Not Designated as Hedging Instruments | Equity forwards
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 46.3	$ 50.0