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PENSION PLANS Pension plan narrative (Details) $ in Millions | 9 Months Ended
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Oct. 02, 2016 USD ($)
Pension Plan Disclosure [Abstract] |
Pension Contributions | $ 225.0

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- Definition Pension Plan Disclosure [Abstract] + References No definition available. + Details
Name: | sfd_PensionPlanDisclosureAbstract
Namespace Prefix: | sfd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of cash or cash equivalents contributed by the entity to fund its pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585 + Details
Name: | us-gaap_PensionContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration