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INVESTMENTS Equity Method Investments (Details) (USD $)
In Millions, unless otherwise specified
Mar. 29, 2015
Dec. 28, 2014
Schedule of Equity Method Investments [Line Items]    
Investments $ 446.7us-gaap_EquityMethodInvestments $ 498.0us-gaap_EquityMethodInvestments
Campofrio Food Group    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment, Ownership Percentage 37.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_CampofrioFoodGroupMember		  
Investments 300.6us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_CampofrioFoodGroupMember		 330.0us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_CampofrioFoodGroupMember
Mexican Joint Ventures    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment, Ownership Percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_MexicanJointVenturesMember		  
Investments 121.5us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_MexicanJointVenturesMember		 142.8us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_MexicanJointVenturesMember
Other Equity Method Investments    
Schedule of Equity Method Investments [Line Items]    
Investments $ 24.6us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_OtherEquityMethodInvestmentsMember		 $ 25.2us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sfd_OtherEquityMethodInvestmentsMember