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v3.25.1

Description of Business and Summary of Significant Accounting Policies- Cash, Receivables, and Inventory (Details) | 12 Months Ended
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Feb. 01, 2025 | Feb. 03, 2024 | Jan. 28, 2023
Restricted Cash |  |  |
Maximum number of days cash remains restricted pursuant to like-kind exchange agreements | 180 days | 180 days | 180 days
Accounts Receivable |  |  |
Number of days in which accounts receivable are ordinarily due | 30 days |  |
Number of days in which contract retentions are due | 30 days |  |
Minimum number of days past due for accounts receivable to be considered delinquent | 120 days |  |
Merchandise Inventories |  |  |
Percentage of inventories valued at the lower of cost or market using LIFO retail inventory method | 95.00% |  |

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- Definition Represents the minimum number of days past due for construction accounts receivable to be considered delinquent. + References No definition available. + Details
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Namespace Prefix: | dds_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the number of days in which construction accounts receivable are normally due after the issuance of the invoice. + References No definition available. + Details
Name: | dds_AccountsReceivableDueDays
Namespace Prefix: | dds_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the number of days in which construction contract retentions are normally due after completion of the project and acceptance by the owner. + References No definition available. + Details
Name: | dds_ContractRetentionsDueDays
Namespace Prefix: | dds_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The maximum number of days cash remains restricted pursuant to like-kind exchange agreements. + References No definition available. + Details
Name: | dds_LikeKindExchangeAgreementMaximumDaysCashRemainsRestricted
Namespace Prefix: | dds_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Definition Represents the percentage of inventories valued at the lower of cost or market using the last-in, first-out retail inventory method. + References No definition available. + Details
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Namespace Prefix: | dds_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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

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

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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