|
STOCK-BASED COMPENSATION PLAN (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
|
12 Months Ended |
|
Jan. 31, 2015
|
Feb. 01, 2014
|
Feb. 02, 2013
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Intrinsic value of options exercised |
$ 3.7us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
$ 5.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
$ 21.8us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
| Minimum statutory tax withholding related to vested restricted shares |
15.8dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodMinimumStatutoryTaxWithholding
|
18.6dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodMinimumStatutoryTaxWithholding
|
22.1dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodMinimumStatutoryTaxWithholding
|
| Compensation Expense |
37.4us-gaap_AllocatedShareBasedCompensationExpense
|
36.2us-gaap_AllocatedShareBasedCompensationExpense
|
34.9us-gaap_AllocatedShareBasedCompensationExpense
|
| Total fair value of vested restricted shares |
31.8us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
|
29.7us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
|
26.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
|
| Service Based Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Weighted average period of recognition (in months) |
21 months
|
|
|
| Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Restricted stock granted under service and performance awards (in shares) |
500,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
500,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
500,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
| Compensation Expense |
22.2us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
21.1us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
21.9us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
| Unrecognized compensation expense |
21.7us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= dltr_ServiceBasedAwardsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
|
|
| EIP and EOEP [Member] | Performance And Service Based Awards [Member] | Certain officers [Member] | Ratable Annual Vesting [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Restricted stock granted under service and performance awards (in shares) |
|
|
200,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanAndExecutiveOfficerEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Compensation expensed over the service period |
|
|
8.1us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanAndExecutiveOfficerEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Allocated Share Based Compensation Expense Restricted Stock2011 Grants |
0.9dltr_AllocatedShareBasedCompensationExpenseRestrictedStock2011Grants
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanAndExecutiveOfficerEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
1.1dltr_AllocatedShareBasedCompensationExpenseRestrictedStock2011Grants
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanAndExecutiveOfficerEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
5.7dltr_AllocatedShareBasedCompensationExpenseRestrictedStock2011Grants
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanAndExecutiveOfficerEquityIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Eip [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |
10 years
|
|
|
| Shares granted under fixed stock option compensation plans |
18,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= dltr_EquityIncentivePlanMember
|
|
|
| EOEP [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |
10 years
|
|
|
| Director Deferred Compensation Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |
10 years
|
|
|
| Percentage of the share price of common stock used in the calculation to determine the number of options issued to a director (in hundredths) |
33.00%dltr_PercentageOfStockPriceperShare
/ us-gaap_PlanNameAxis
= dltr_DirectorDeferredCompensationPlanMember
|
|
|
| Omnibus Incentive Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term |
10 years
|
|
|
| Shares available for grant |
4,000,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardsNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
|
|
|
| Omnibus Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Target Value |
|
|
1.7dltr_ShareBasedCompensationTargetValue
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
| Individual potential target award, minimum (in hundredths) |
|
|
0.00%dltr_IndividualPotentialTargetAwardMinimum
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
| Individual Potential Target Award Maximum |
|
|
200.00%dltr_IndividualPotentialTargetAwardMaximum
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
| Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Ratable Annual Vesting [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Restricted stock granted under service and performance awards (in shares) |
200,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
|
| Compensation expensed over the service period |
10.0us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
|
| Compensation Expense |
6.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
|
| Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Certain officers [Member] | Ratable Annual Vesting [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Restricted stock granted under service and performance awards (in shares) |
|
200,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
| Compensation expensed over the service period |
|
9.9us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
| Allocated Share Based Compensation Expense Restricted Stock2012 Grants |
1.1dltr_AllocatedShareBasedCompensationExpenseRestrictedStock2012Grants
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
6.5dltr_AllocatedShareBasedCompensationExpenseRestrictedStock2012Grants
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
|
| Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Chief Executive Officer [Member] | Ratable Annual Vesting [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
|
5 years
|
|
| Restricted stock granted under service and performance awards (in shares) |
|
|
200,000dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsServiceAndPerformanceAwardsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Compensation Expense |
2.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
2.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
1.3us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Target Value |
|
|
10.0dltr_ShareBasedCompensationTargetValue
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_VestingAxis
= dltr_RatableAnnualVestingMember
|
| Share-based compensation arrangement by share-based payment award, service period |
|
5 years
|
|
| Omnibus Incentive Plan [Member] | Performance And Service Based Awards [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Target Value |
2.0dltr_ShareBasedCompensationTargetValue
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
|
| Individual potential target award, minimum (in hundredths) |
0.00%dltr_IndividualPotentialTargetAwardMinimum
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
0.00%dltr_IndividualPotentialTargetAwardMinimum
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
| Individual Potential Target Award Maximum |
200.00%dltr_IndividualPotentialTargetAwardMaximum
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
200.00%dltr_IndividualPotentialTargetAwardMaximum
/ us-gaap_AwardTypeAxis
= dltr_PerformanceAndServiceBasedAwardsMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
| Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Compensation Expense |
|
|
1.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
| Target Value |
|
1.7dltr_ShareBasedCompensationTargetValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
| Employee Stock Purchase Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Weighted average fair value of granted purchase rights (in dollars per share) |
$ 8.17dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEsppGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
$ 8.26dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEsppGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
$ 6.97dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEsppGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
| Compensation Expense |
0.8us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
1.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
0.9us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
| Employee stock purchase plan shares of common stock authorized for issuance |
5,278,125dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEsppNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
|
|
| Percentage of employee compensation eligible to purchase shares of common stock, maximum (in hundredths) |
10.00%dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeSubscriptionRateMaximum
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
|
|
| ESPP Plan purchase price of stock (in hundredths) |
85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
|
|
| Shares sold under the ESPP |
4,786,751dltr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEsppNumberOfSharesSold
/ us-gaap_PlanNameAxis
= dltr_EmployeeStockPurchasePlanMember
|
|
|
| 2013 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Compensation Expense |
1.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardDateAxis
= dltr_A2013RestrictedStockGrantOfficersMember
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
|
| 2012 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Compensation Expense |
0.4us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardDateAxis
= dltr_A2012RestrictedStockGrantOfficersMember
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
1.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardDateAxis
= dltr_A2012RestrictedStockGrantOfficersMember
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|
| 2011 Restricted Stock Grant - Officers [Member] | Omnibus Incentive Plan [Member] | Performance Shares [Member] | Restricted Stock Units (RSUs) [Member] | Certain officers [Member] | Vesting at End of Performance Period [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Compensation Expense |
$ 0.2us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardDateAxis
= dltr_A2011RestrictedStockGrantOfficersMember
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
$ 0.2us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardDateAxis
= dltr_A2011RestrictedStockGrantOfficersMember
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= dltr_OmnibusIncentivePlanMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_OfficerMember
/ us-gaap_VestingAxis
= dltr_VestingAtEndOfPerformancePeriodMember
|
|