Income tax expense - Summary of Difference Between Effective Tax Rate and Standard Corporate Income Tax Rate (Details) - EUR (€) € in Millions |
6 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Income taxes paid (refund) [abstract] | ||
| Standard tax rate applicable in France | 25.80% | 25.80% |
| Difference between the standard French tax rate and the rates applicable to Sanofi | (17.90%) | (7.30%) |
| Tax effect related to amlitelimab | 19.30% | 0.00% |
| Revisions to tax exposures and settlements of tax disputes | 1.80% | 2.30% |
| Other | 1.50% | (1.00%) |
| Effective tax rate | 30.60% | 19.80% |
| Current tax expense (income), related to Pillar Two income taxes | € 57 | € 17 |
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- Definition The applicable income tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The tax expense (income) divided by the accounting profit. [Refer: Accounting profit] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of current tax expense (income) related to Pillar Two income taxes. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Tax rate effects, in aggregate, on the reconciliation between the average effective tax rate and the applicable tax rate that the entity does not separately disclose in the reconciliation. [Refer: Average effective tax rate; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the application of foreign tax rates. [Refer: Average effective tax rate; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Revisions to tax exposures and settlements of tax disputes. No definition available.
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- Definition Tax Effect Related To Amlitelimab No definition available.
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