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Assumed Health Care Cost Trend Rates Related to Measurement of SERP Medical Plan Obligations (Detail)
 12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Medical care | Defined Benefit Obligations      
Health Care Cost Trend Rates Assumptions [Line Items]      
Initial cost trend rate 7.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 7.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 7.50%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember
Ultimate cost trend rate 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember
Year that the ultimate cost trend rate is reached 2019 2018 2018
Medical care | Net Periodic Benefit Costs      
Health Care Cost Trend Rates Assumptions [Line Items]      
Initial cost trend rate 7.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 7.50%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 8.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember
Ultimate cost trend rate 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_MedicalMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember
Year that the ultimate cost trend rate is reached 2018 2018 2018
Dental care | Defined Benefit Obligations      
Health Care Cost Trend Rates Assumptions [Line Items]      
Initial cost trend rate 5.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember
Ultimate cost trend rate 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_DefinedBenefitObligationsMember
Year that the ultimate cost trend rate is reached 2013 2013 2013
Dental care | Net Periodic Benefit Costs      
Health Care Cost Trend Rates Assumptions [Line Items]      
Initial cost trend rate 5.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.00%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.50%fl_DefinedBenefitPlanHealthCareCostInitialTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember
Ultimate cost trend rate 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember		 5.00%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
/ fl_DefinedBenefitPlanByBenefitPlanCategoriesAxis
= fl_DentalCareMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= fl_NetPeriodicBenefitCostsMember
Year that the ultimate cost trend rate is reached 2013 2013 2013