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. 27, 2011	May 29, 2011
Designated as Hedging Instrument [Member] | Natural Gas [Member]
Derivative contracts designated as hedging instruments	$ 0	$ 3.8
Designated as Hedging Instrument [Member] | Other Commodities [Member]
Derivative contracts designated as hedging instruments	7.1	0
Designated as Hedging Instrument [Member] | Foreign Currency [Member]
Derivative contracts designated as hedging instruments	11.9	20.7
Designated as Hedging Instrument [Member] | Interest Rate [Member]
Derivative contracts designated as hedging instruments	0	150.0
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivative contracts designated as hedging instruments	450.0	350.0
Designated as Hedging Instrument [Member] | Equity Forwards [Member]
Derivative contracts designated as hedging instruments	26.4	18.0
Not Designated as Hedging Instrument [Member] | Natural Gas [Member]
Derivative contracts designated as hedging instruments	5.9	7.7
Not Designated as Hedging Instrument [Member] | Other Commodities [Member]
Derivative contracts designated as hedging instruments	10.5	12.7
Not Designated as Hedging Instrument [Member] | Equity Forwards [Member]
Derivative contracts designated as hedging instruments	$ 45.2	$ 24.0