Derivative Instruments And Hedging Activities (Notional Values Of Derivative Contracts Designated And Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	Aug. 25, 2013	May 26, 2013
Designated as Hedging Instruments | Commodities
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 15.8	$ 18.2
Designated as Hedging Instruments | Foreign currency
Derivatives, Fair Value [Line Items]
Derivative contracts	15.3	20.3
Designated as Hedging Instruments | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative contracts	100.0	100.0
Designated as Hedging Instruments | Equity forwards
Derivatives, Fair Value [Line Items]
Derivative contracts	22.2	24.9
Not Designated as Hedging Instruments | Commodities
Derivatives, Fair Value [Line Items]
Derivative contracts	1.2	0.6
Not Designated as Hedging Instruments | Equity forwards
Derivatives, Fair Value [Line Items]
Derivative contracts	$ 36.5	$ 49.1