v3.26.1
Cover
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Entity Registrant Name SIMPSON MANUFACTURING CO., INC.
Document Type 11-K
Amendment Flag false
Entity Central Index Key 0000920371
EBP 001  
Document Information [Line Items]  
Entity Registrant Name SIMPSON MANUFACTURING CO., INC.
Document Type 11-K
Amendment Flag false
Entity Central Index Key 0000920371