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PENSION AND OTHER RETIREMENT PLANS Schedule of Qualified Pension Plan Assets by Major Asset Category (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 28, 2014 | Dec. 29, 2013
Cash and Cash Equivalents, Net of Unsettled Transactions |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 0.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_CashAndCashEquivalentsNetOfUnsettledTransactionsMember |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 4.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_CashAndCashEquivalentsNetOfUnsettledTransactionsMember |
Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 30.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember |
Debt Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 35.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 55.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember |
Alternative Assets |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 5.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_AlternativeAssetsMember |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 20.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_AlternativeAssetsMember |
Successor |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 1,214.7us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 1,122.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember
Successor | Cash and Cash Equivalents, Net of Unsettled Transactions |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 103.1us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_CashAndCashEquivalentsNetOfUnsettledTransactionsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
Successor | Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 459.4us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
Successor | Debt Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 555.4us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
Successor | Alternative Assets |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 96.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_AlternativeAssetsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
Predecessor |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets |  | 1,122.8us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Predecessor | Cash and Cash Equivalents, Net of Unsettled Transactions |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets |  | 60.0us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_CashAndCashEquivalentsNetOfUnsettledTransactionsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Predecessor | Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets |  | 455.7us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Predecessor | Debt Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets |  | 512.4us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_DebtSecuritiesMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Predecessor | Alternative Assets |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets |  | $ 94.7us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = sfd_AlternativeAssetsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 + Details
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