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Accounts Receivable - Additional Information (Details) - EUR (€) € in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Trade and other receivables [abstract] |  |  |
Impairment loss (reversal of impairment loss) recognised in profit or loss, trade receivables | € 2 | € 1 |
Derecognized receivables | € 502 |  | € 131

X
- Definition The amount of impairment loss or reversal of impairment loss recognised in profit or loss for trade receivables. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss; Trade receivables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_TradeAndOtherReceivablesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Derecognized receivables. + References No definition available. + Details
Name: | sny_DerecognizedReceivables
Namespace Prefix: | sny_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant