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BALANCE SHEET COMPONENTS (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Jan. 31, 2015
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Feb. 01, 2014
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Feb. 02, 2013
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| Property, Plant and Equipment, Net | |||
| Gross property, plant and equipment | $ 2,970.2us-gaap_PropertyPlantAndEquipmentGross | $ 2,710.1us-gaap_PropertyPlantAndEquipmentGross | |
| Less: accumulated depreciation | 1,759.7us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 1,616.1us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | |
| Total property, plant and equipment, net | 1,210.5us-gaap_PropertyPlantAndEquipmentNet | 1,094.0us-gaap_PropertyPlantAndEquipmentNet | |
| Depreciation expense | 206.0us-gaap_Depreciation | 190.7us-gaap_Depreciation | 175.4us-gaap_Depreciation |
| Other Assets, Noncurrent | |||
| Deferred Finance Costs, Noncurrent, Net | 74.3us-gaap_DeferredFinanceCostsNoncurrentNet | 4.3us-gaap_DeferredFinanceCostsNoncurrentNet | |
| Other Intangible Assets, Net | 1.5us-gaap_OtherIntangibleAssetsNet | 2.5us-gaap_OtherIntangibleAssetsNet | |
| Federal Income Tax Benefit | 2.2dltr_FederalIncomeTaxBenefit | 1.9dltr_FederalIncomeTaxBenefit | |
| Restricted Investments | 78.9us-gaap_RestrictedInvestments | 87.9us-gaap_RestrictedInvestments | |
| Long-Lived Assets | 9.8us-gaap_NoncurrentAssets | 9.4us-gaap_NoncurrentAssets | |
| Total other assets | 166.7us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment | 106.0us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment | |
| Other Current Liabilities | |||
| Compensation and benefits | 108.6dltr_AccruedCompensationAndBenefitsCurrent | 95.3dltr_AccruedCompensationAndBenefitsCurrent | |
| Taxes (other than income taxes) | 30.6us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent | 26.4us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent | |
| Insurance | 42.7us-gaap_AccruedInsuranceCurrent | 34.1us-gaap_AccruedInsuranceCurrent | |
| Accrued deferred financing costs | 58.4dltr_Accrueddeferredfinancingcosts | 0dltr_Accrueddeferredfinancingcosts | |
| Interest Payable, Current | 48.3us-gaap_InterestPayableCurrent | 2.0us-gaap_InterestPayableCurrent | |
| Other | 96.7us-gaap_OtherAccruedLiabilitiesCurrent | 74.5us-gaap_OtherAccruedLiabilitiesCurrent | |
| Total other current liabilities | 385.3us-gaap_OtherLiabilitiesCurrent | 232.3us-gaap_OtherLiabilitiesCurrent | |
| Other Long-Term Liabilities | |||
| Deferred rent | 91.9us-gaap_DeferredRentCreditNoncurrent | 86.3us-gaap_DeferredRentCreditNoncurrent | |
| Insurance | 51.8us-gaap_AccruedInsuranceNoncurrent | 54.7us-gaap_AccruedInsuranceNoncurrent | |
| Other | 13.2us-gaap_OtherAccruedLiabilitiesNoncurrent | 11.4us-gaap_OtherAccruedLiabilitiesNoncurrent | |
| Total other long-term liabilities | 156.9us-gaap_OtherLiabilitiesNoncurrent | 152.4us-gaap_OtherLiabilitiesNoncurrent | |
| Land [Member] | |||
| Property, Plant and Equipment [Line Items] | |||
| Land |
79.0us-gaap_Land / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandMember |
65.2us-gaap_Land / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandMember |
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| Buildings [Member] | |||
| Property, Plant and Equipment [Line Items] | |||
| Buildings and Improvements, Gross |
336.9us-gaap_BuildingsAndImprovementsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
319.8us-gaap_BuildingsAndImprovementsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
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| Leasehold Improvements [Member] | |||
| Property, Plant and Equipment [Line Items] | |||
| Leasehold Improvements, Gross |
1,068.2us-gaap_LeaseholdImprovementsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |
960.7us-gaap_LeaseholdImprovementsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |
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| Furniture, fixtures and equipment [Member] | |||
| Property, Plant and Equipment, Net | |||
| Gross property, plant and equipment |
1,385.2us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = dltr_FurnitureFixturesAndEquipmentMember |
1,307.0us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = dltr_FurnitureFixturesAndEquipmentMember |
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| Construction in Progress [Member] | |||
| Property, Plant and Equipment, Net | |||
| Gross property, plant and equipment |
$ 100.9us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |
$ 57.4us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |
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- Definition
Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided and benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). No definition available.
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- Definition
Accrued deferred financing costs to acquire debt No definition available.
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- Definition
Federal Income Tax Benefit No definition available.
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and due beyond one year (or beyond one operating cycle if longer) to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverages to employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets, excluding property, plant, and equipment and other property and investments, that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Charges and Other Assets. No definition available.
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- Definition
Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net amount of long-term deferred finance costs capitalized at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The noncurrent portion (due beyond one year or one operating cycle) of other accrued expenses (expenses incurred at the end of the reporting period but not yet paid) not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The net carrying amount as of the balance sheet date of other indefinite-lived and finite-lived intangible assets that are not separately presented on the statement of financial position. No definition available.
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- Definition
Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. No definition available.
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