DERIVATIVE FINANCIAL INSTRUMENTS Fair Value (Details) (USD $) In Millions, unless otherwise specified	Jan. 27, 2013	Apr. 29, 2012
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 66.5	$ 79.0
Derivative Liability, Fair Value, Gross Liability	34.4	30.7
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	51.1	60.1
Derivative Liability, Fair Value, Gross Liability	26.4	9.6
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	15.4	18.9
Derivative Liability, Fair Value, Gross Liability	8.0	21.1
Grain Contracts [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	41.3	35.3
Derivative Liability, Fair Value, Gross Liability	22.4	9.6
Grain Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	10.5	9.1
Derivative Liability, Fair Value, Gross Liability	3.0	1.0
Livestock Contracts [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	8.5	22.9
Derivative Liability, Fair Value, Gross Liability	3.9	0
Livestock Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	1.4	7.4
Derivative Liability, Fair Value, Gross Liability	1.0	7.2
Energy Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	2.7	0
Derivative Liability, Fair Value, Gross Liability	3.7	12.2
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	1.3	1.9
Derivative Liability, Fair Value, Gross Liability	0.1	0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0.8	2.4
Derivative Liability, Fair Value, Gross Liability	$ 0.3	$ 0.7