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LITIGATION MATTERS (Narrative) (Details)
46 Months Ended 52 Months Ended
May 02, 2015
store
May 02, 2015
plantiff
Winn Dixie Exclusive Selling Rights Violations Member    
Loss Contingency [Abstract]    
Number of Operating Locations Affected 48dltr_LossContingencyNumberOfOperatingLocationsAffected
/ us-gaap_LitigationCaseAxis
= dltr_WinnDixieExclusiveSellingRightsViolationsMember
 
Stores Required To Restrict Sales Of Food 20dltr_StoresRequiredToRestrictSalesOfFood
/ us-gaap_LitigationCaseAxis
= dltr_WinnDixieExclusiveSellingRightsViolationsMember
 
Pending Or Threatened Litigation Multi State Litigation Member    
Loss Contingency [Abstract]    
Loss Contingency, Number of Opt In Plaintiffs   4,300dltr_LossContingencyNumberOfOptInPlaintiffs
/ us-gaap_LitigationCaseAxis
= dltr_PendingOrThreatenedLitigationMultiStateLitigationMember