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Organization and Description of Business (Details) - Direct Digital Holdings, LLC | 1 Months Ended | 9 Months Ended
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Feb. 28, 2022 | Sep. 30, 2025
Schedule of Organization and Description of Business [Line Items] |  |
Percentage of voting interests | 100.00% |
Percentage of economic voting interests | 19.70% | 63.50%
Percentage of ownership interest |  | 100.00%

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- Definition Percentage of economic voting units. + References No definition available. + Details
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Period Type: | duration

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- Definition The parent entity's voting interest in subsidiary, expressed as a percentage. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482987/272-10-50-3 + Details
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- Details
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