XML 61 R47.htm IDEA: XBRL DOCUMENT
v3.8.0.1

EMPLOYEE BENEFIT PLANS (Details) $ in Millions | 12 Months Ended
--- | ---
Feb. 03, 2018 USD ($) Years_Old hour | Jan. 28, 2017 USD ($) | Jan. 30, 2016 USD ($)
Profit Sharing and 401(k) Retirement Plan [Abstract] |  |  |
Age over which all employees have 401K benefits available | Years_Old | 21 |  |
Employee service years required for available 401K benefits (in years) | one |  |
Minimum hours in a 401K qualifying one year period (in hours) | hour | 1,000 |  |
Profit Sharing Vesting Schedule |  |  |
Percentage Vested in the Profit Sharing Plan After Two Years of Service (in Hundreths) | 20.00% |  |
Years of Service Required to vest 20% in the Profit Sharing Plan | 2 years |  |
Percentage Vested in the Profit Sharing Plan After Three Years of Service (in Hundreths) | 40.00% |  |
Years of Service Required to vest 40% in the Profit Sharing Plan | 3 years |  |
Percentage Vested in the Profit Sharing Plan After Four Years of Service (in Hundreths) | 60.00% |  |
Years of Service Required to vest 60% in the Profit Sharing Plan | 4 years |  |
Percentage Vested in the Profit Sharing Plan After Five Years of Service (in Hundreths) | 100.00% |  |
Years of Service Required to vest 100% in the Profit Sharing Plan | 5 years |  |
Deferred Compensation Plan [Abstract] |  |  |
Cumulative participant deferrals | $ 5.7 | $ 5.2 |
Family Dollar [Member] |  |  |
Deferred Compensation Plan [Abstract] |  |  |
Cumulative participant deferrals | 15.0 | 14.6 |
Postemployment Retirement Benefits [Member] |  |  |
Profit Sharing and 401(k) Retirement Plan [Abstract] |  |  |
Contributions to expenses of the plans | 52.9 | 49.1 | $ 42.8
Dollar Tree Retirement Savings Plan, formerly Dollar Tree Inc. Affiliates and Subsidiaries Profit Sharing and 401(k) Retirement Plan [Member] | Postemployment Retirement Benefits [Member] |  |  |
Profit Sharing and 401(k) Retirement Plan [Abstract] |  |  |
Contributions to expenses of the plans | 52.9 | 39.9 | 36.6
Family Dollar Employee Savings and Retirement Plan and Trust [Member] | Postemployment Retirement Benefits [Member] |  |  |
Profit Sharing and 401(k) Retirement Plan [Abstract] |  |  |
Contributions to expenses of the plans | 0.0 | 9.2 | 6.2
Cost of Sales [Member] | Postemployment Retirement Benefits [Member] |  |  |
Profit Sharing and 401(k) Retirement Plan [Abstract] |  |  |
Contributions to expenses of the plans | $ 7.8 | $ 7.9 | $ 7.4

X
- Definition The percentage an employee has vested in the profit sharing plan after five years of service. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanPercentageVestedAfterFiveYearsOfService
Namespace Prefix: | dltr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage an employee has vested in the profit sharing plan after four years of service. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanPercentageVestedAfterFourYearsOfService
Namespace Prefix: | dltr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage an employee has vested in the profit sharing plan after three years of service. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanPercentageVestedAfterThreeYearsOfService
Namespace Prefix: | dltr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage an employee has vested in the profit sharing plan after two years of service. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanPercentageVestedAfterTwoYearsOfService
Namespace Prefix: | dltr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The years of service required for an employee to vest 100% in the profit sharing plan. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanProfitSharingPlanYearsToVest100Percent
Namespace Prefix: | dltr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The years of service required for an employee to vest 20% in the profit sharing plan. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanProfitSharingPlanYearsToVest20Percent
Namespace Prefix: | dltr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The years of service required for an employee to vest 40% in the profit sharing plan. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanProfitSharingPlanYearsToVest40Percent
Namespace Prefix: | dltr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The years of service required for an employee to vest 60% in the profit sharing plan. + References No definition available. + Details
Name: | dltr_DefinedContributionPlanProfitSharingPlanYearsToVest60Percent
Namespace Prefix: | dltr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the terms and benefits provided by the employer's defined contribution plans for employee minimum age requirement. + References No definition available. + Details
Name: | dltr_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlansAgeRequirement
Namespace Prefix: | dltr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the terms and benefits provided by the employer's defined contribution plans for employee minimum hours within an employment year. + References No definition available. + Details
Name: | dltr_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlansEmploymentMinimumHoursInYear
Namespace Prefix: | dltr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the terms and benefits provided by the employer's defined contribution plans for employee minimum employment requirement. + References No definition available. + Details
Name: | dltr_DescriptionOfDefinedContributionPensionAndOtherPostretirementPlansEmploymentMinimumPeriod
Namespace Prefix: | dltr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Profit Sharing and 401(k) Retirement Plan [Abstract] + References No definition available. + Details
Name: | dltr_ProfitSharingAnd401KRetirementPlanAbstract
Namespace Prefix: | dltr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | dltr_ProfitSharingVestingScheduleAbstract
Namespace Prefix: | dltr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable after one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=dltr_FamilyDollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PostemploymentRetirementBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=dltr_DollarTreeRetirementSavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=dltr_FamilyDollarEmployeeSavingsAndRetirementPlanAndTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |