Represents liabilities for unredeemed gift cards current and long term.

No definition available.

Name:	dds_AccruedLiabilitiesForUnredeemedGiftCardsCurrentAndLongTerm
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The typical term for CDI construction contracts.

+ References

No definition available.

+ Details

Name:	dds_ConstructionContract
Namespace Prefix:	dds_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

+ Details

Name:	dds_GiftCardRevenueRecognitionAbstract
Namespace Prefix:	dds_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The entity's proportionate share for the period of the net income (loss) of its investees (such as unconsolidated subsidiaries and joint ventures) which are accounted for under the equity method of accounting. Such amounts typically reflect adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. This item also includes the portion of the distribution from joint ventures representing a return of capital in excess of the carrying value of the joint venture.

+ References

No definition available.

+ Details

Name:	dds_IncomeOnAndEquityInLossesOfJointVentures
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Original term (in years) of Wells Fargo Alliance which began November 2014

+ References

No definition available.

+ Details

Name:	dds_OriginaltermofWellsFargoAlliance
Namespace Prefix:	dds_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The entity's share of revenue from private label credit cards which are owned and managed by an outside entity.

+ References

No definition available.

+ Details

Name:	dds_PrivateLabelCardRevenue
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the period over which the entity recognizes breakage income related to unredeemed gift cards. Breakage occurs when a customer pays in advance of vendor performance and does not demand full performance for various reasons.

+ References

No definition available.

+ Details

Name:	dds_RevenueRecognitionGiftCardsBreakagePeriod
Namespace Prefix:	dds_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

[Line Items] for Schedule of Equity and Cost Method Investments [Table]

+ References

No definition available.

+ Details

Name:	dds_ScheduleofEquityandCostMethodInvestmentsLineItems
Namespace Prefix:	dds_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

+ Details

Name:	us-gaap_AdvertisingExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Total amount received by an entity from a vendor under a cooperative advertising arrangement that has been offset against advertising expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 705
-SubTopic 20
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68067574&loc=SL51760044-203187

+ Details

Name:	us-gaap_CooperativeAdvertisingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_MarketingAndAdvertisingExpenseAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI http://asc.fasb.org/extlink&oid=109223946&loc=SL94080555-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSalesOfAssetsInvestingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of restructuring charges, remediation cost, and asset impairment loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_RestructuringSettlementAndImpairmentProvisions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_RevenueRecognitionAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Description of Business and Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Schedule of Equity and Cost Method Investments [Line Items]
Gain on disposal of assets	$ (8,300)	$ (300)	$ (4,900)	$ (7,400)	$ (20,293)	$ 48	$ (4,860)
Proceeds from disposal of assets					30,580	2,003	11,683
Asset impairment and store closing charges					0
Distribution from joint venture					2,295	3,835	3,460
Income on and equity in earnings of joint ventures					$ 0	31	835
Revenue Recognition
Original term of Wells Fargo Alliance					10 years
Income received from private label credit cards under the Alliance					$ 91,000	94,000	101,000
Gift Card Revenue Recognition
Gift card breakage income, recognition period					60 months
Gift card liabilities	$ 59,000				$ 59,000	58,200
Advertising
Advertising expense					39,200	40,400	42,500
Cooperative advertisement reimbursements					$ 13,900	$ 15,100	$ 19,900
Minimum
Revenue Recognition
Typical term of CDI construction contracts					9 months
Maximum
Revenue Recognition
Typical term of CDI construction contracts					18 months