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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified |  |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |
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Apr. 29, 2012 | May 01, 2011 | Apr. 29, 2012 Land and Land Improvements [Member] | May 01, 2011 Land and Land Improvements [Member] | Apr. 29, 2012 Land and Land Improvements [Member] Minimum [Member] | Apr. 29, 2012 Land and Land Improvements [Member] Maximum [Member] | Apr. 29, 2012 Building and Building Improvements [Member] | May 01, 2011 Building and Building Improvements [Member] | Apr. 29, 2012 Building and Building Improvements [Member] Minimum [Member] | Apr. 29, 2012 Building and Building Improvements [Member] Maximum [Member] | Apr. 29, 2012 Machinery and Equipment [Member] | May 01, 2011 Machinery and Equipment [Member] | Apr. 29, 2012 Machinery and Equipment [Member] Minimum [Member] | Apr. 29, 2012 Machinery and Equipment [Member] Maximum [Member] | Apr. 29, 2012 Breeding and Production Animals [Member] | May 01, 2011 Breeding and Production Animals [Member] | Apr. 29, 2012 Breeding and Production Animals [Member] Minimum [Member] | Apr. 29, 2012 Breeding and Production Animals [Member] Maximum [Member] | Apr. 29, 2012 Computer Equipment [Member] | May 01, 2011 Computer Equipment [Member] | Apr. 29, 2012 Computer Equipment [Member] Minimum [Member] | Apr. 29, 2012 Computer Equipment [Member] Maximum [Member] | Apr. 29, 2012 Property, Plant and Equipment, Other Types [Member] | May 01, 2011 Property, Plant and Equipment, Other Types [Member] | Apr. 29, 2012 Property, Plant and Equipment, Other Types [Member] Minimum [Member] | Apr. 29, 2012 Property, Plant and Equipment, Other Types [Member] Maximum [Member] | Apr. 29, 2012 Construction in Progress [Member] | May 01, 2011 Construction in Progress [Member]
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  | 0 years | 20 years |  |  | 20 years | 40 years |  |  | 5 years | 25 years |  |  | 2 years | 2 years |  |  | 3 years | 5 years |  |  | 3 years | 10 years |  |
Property, plant and equipment, gross | $ 4,269.9 | $ 4,186.7 | $ 268.9 | $ 271.7 |  |  | $ 1,690.6 | $ 1,717.8 |  |  | $ 1,780.6 | $ 1,714.0 |  |  | $ 182.1 | $ 159.3 |  |  | $ 148.4 | $ 137.1 |  |  | $ 89.1 | $ 53.2 |  |  | $ 110.2 | $ 133.6
Accumulated depreciation | (1,992.7) | (1,877.6) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | $ 2,277.2 | $ 2,309.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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