v3.26.1
Document And Entity Information
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Entity Registrant Name H.B. FULLER COMPANY
Entity Central Index Key 0000039368
Current Fiscal Year End Date --11-28
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Amendment Flag false