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12 Months Ended
Dec. 31, 2024
Document Information [Line Items]  
Document Type DEFR14A
Amendment Flag false
Amendment Description We are filing the accompanying revised Definitive Proxy Statement on Schedule 14A for the sole purpose of including certain Inline eXtensible Business Reporting Language data tagging, which was inadvertently omitted from the original Definitive Proxy Statement.
Entity Information [Line Items]  
Entity Registrant Name CARDLYTICS, INC.
Entity Central Index Key 0001666071