v3.26.1
Document and Entity Information
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type 11-K
Entity Central Index Key 0001303523
Entity Registrant Name British American Tobacco p.l.c.
Amendment Flag false
EBP 001  
Document Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Entity Central Index Key 0001303523
Entity Registrant Name British American Tobacco p.l.c.
Amendment Flag false
Document Fiscal Period Focus FY