v3.26.1
Cover page
6 Months Ended
Jun. 30, 2026
Entity Information [Line Items]  
Document Type 6-K
Entity Registrant Name SANOFI
Amendment Flag false
Entity Central Index Key 0001121404
Current Fiscal Year End Date --12-31
Document Period End Date Jun. 30, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q2