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Other Operating Income And Expenses - Additional Information (Details) - EUR (€) € in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Disclosure Of Other Operating Income Expenses [Line Items] |  |  |
Other operating income | € 617 | € 416 | € 1,969
Other operating expense | 1,422 | 1,204 | 2,531
Regeneron | Other operating income (expense) |  |  |
Disclosure Of Other Operating Income Expenses [Line Items] |  |  |
Other operating income | 102 | 133 | € 1,147
Other related parties | Other operating income (expense) |  |  |
Disclosure Of Other Operating Income Expenses [Line Items] |  |  |
Other operating income | 160 | 153 |
Gains on divestment of some mature products | € 413 | € 288 |

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