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DERIVATIVES FINANCIAL INSTRUMENTS Narrative (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 5 Months Ended 12 Months Ended
Apr. 29, 2012
Dec. 27, 2015
Sep. 26, 2013
Apr. 28, 2013
Dec. 28, 2014
Dec. 29, 2013
Derivative [Line Items]            
Gain on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring $ 12.0us-gaap_GainOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurring          
Accumulated other comprehensive income (loss), Hedge accounting         26.4us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax  
Tax On Deferred Gains (Losses) in Accumulated Other Comprehensive Income (Loss)         (17.1)sfd_TaxOnDeferredGainsLossesInAccumulatedOtherComprehensiveIncomeLoss  
Scenario, Forecast | Commodity Contract [Member]            
Derivative [Line Items]            
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months   1.9us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
       
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Net of Tax   1.2sfd_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsNetOfTax
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
       
Predecessor            
Derivative [Line Items]            
Accumulated other comprehensive income (loss), Hedge accounting       (17.8)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Gains (Losses) on Derivative Contracts Representing the Differences Between Spot and Futures Prices Which are Excluded from the Assessment of Effectiveness and Recorded Directly Into Earnings 5.1sfd_GainsLossesOnDerivativeContractsRepresentingDifferencesBetweenSpotAndFuturesPricesWhichAreExcludedFromAssessmentOfEffectivenessAndRecordedDirectlyIntoEarnings
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
    (7.5)sfd_GainsLossesOnDerivativeContractsRepresentingDifferencesBetweenSpotAndFuturesPricesWhichAreExcludedFromAssessmentOfEffectivenessAndRecordedDirectlyIntoEarnings
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Gains (Losses) Recognized on Closed Commodity Derivative Contracts As the Underlying Cash Transactions Affected Earnings 6.0sfd_GainsLossesRecognizedOnClosedCommodityDerivativeContractsAsUnderlyingCashTransactionsAffectedEarnings
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
  4.1sfd_GainsLossesRecognizedOnClosedCommodityDerivativeContractsAsUnderlyingCashTransactionsAffectedEarnings
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
(2.5)sfd_GainsLossesRecognizedOnClosedCommodityDerivativeContractsAsUnderlyingCashTransactionsAffectedEarnings
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
   
Successor            
Derivative [Line Items]            
Accumulated other comprehensive income (loss), Hedge accounting         $ 26.4us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember
$ (2.9)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_StatementScenarioAxis
= us-gaap_SuccessorMember