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Cover page	6 Months Ended
	Jun. 30, 2023
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, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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