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EQUITY Stock Held in Trust (Details) (USD $) | Apr. 29, 2012
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Supplemental Pension Plan [Member] |
Common Stock, Shares Held in Employee Trust, Shares | 2,616,687
Common Stock, Shares Held in Employee Trust, Per Share | $ 23.75
Director Fee Deferral Program [Member] |
Common Stock, Shares Held in Employee Trust, Shares | 291,635
Common Stock, Shares Held in Employee Trust, Per Share | $ 19.72

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- Definition The per share value of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References No definition available. + Details
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Namespace Prefix: | sfd_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 718 -SubTopic 40 -Section 25 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16701-113920 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | instant