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FAIR VALUE MEASUREMENTS Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified | Oct. 30, 2011 | May 01, 2011
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Commodity Contracts, Asset, Fair Value Disclosure | $ 21.4 | $ 79.8
Foreign Currency Contract, Asset, Fair Value Disclosure | 5.1 | 0.5
Cash Surrender Value, Fair Value Disclosure | 45.0 | 49.4
Assets, Fair Value Disclosure | 71.5 | 129.7
Commodity Contracts, Liability, Fair Value Disclosure | 0.1 | 16.8
Interest Rate Contracts, Liability, Fair Value Disclosure | 0 | 2.3
Foreign Currency Contracts, Liability, Fair Value Disclosure | 4.4 | 1.9
Liabilities, Fair Value Disclosure | 4.5 | 21.0
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Commodity Contracts, Asset, Fair Value Disclosure | 12.0 | 45.2
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0
Cash Surrender Value, Fair Value Disclosure | 45.0 | 49.4
Assets, Fair Value Disclosure | 57.0 | 94.6
Commodity Contracts, Liability, Fair Value Disclosure | 0 | 16.8
Interest Rate Contracts, Liability, Fair Value Disclosure | 0 | 0
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0
Liabilities, Fair Value Disclosure | 0 | 16.8
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Commodity Contracts, Asset, Fair Value Disclosure | 9.4 | 34.6
Foreign Currency Contract, Asset, Fair Value Disclosure | 5.1 | 0.5
Cash Surrender Value, Fair Value Disclosure | 0 | 0
Assets, Fair Value Disclosure | 14.5 | 35.1
Commodity Contracts, Liability, Fair Value Disclosure | 0.1 | 0
Interest Rate Contracts, Liability, Fair Value Disclosure | 0 | 2.3
Foreign Currency Contracts, Liability, Fair Value Disclosure | 4.4 | 1.9
Liabilities, Fair Value Disclosure | 4.5 | 4.2
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Commodity Contracts, Asset, Fair Value Disclosure | 0 | 0
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0
Cash Surrender Value, Fair Value Disclosure | 0 | 0
Assets, Fair Value Disclosure | 0 | 0
Commodity Contracts, Liability, Fair Value Disclosure | 0 | 0
Interest Rate Contracts, Liability, Fair Value Disclosure | 0 | 0
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0
Liabilities, Fair Value Disclosure | $ 0 | $ 0

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- Definition Commodity Contracts, Asset, Fair Value Disclosure + References No definition available. + Details
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Namespace Prefix: | sfd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Commodity Contracts, Liability, Fair Value Disclosure + References No definition available. + Details
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- Definition Interest Rate Contracts, Liability, Fair Value Disclosure + References No definition available. + Details
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Namespace Prefix: | sfd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the portion of a balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount that could be realized under a life insurance contract or contracts owned by the Company as of the date of the statement of financial position. Such Company-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 88-5 -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 FASB Technical Bulletin (FTB) -Number 85-4 -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 -Glossary Cash Surrender Value -URI http://asc.fasb.org/extlink&oid=6507153 + Details
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- Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date. + References No definition available. + Details
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- Definition This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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