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Accounts receivable - Summary of Accounts Receivable (Details) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of accounts receivable [line items] |  |  |
Accounts receivable | € 8,433 | € 8,424 | € 7,568
Gross value |  |  |
Disclosure of accounts receivable [line items] |  |  |
Accounts receivable | 8,528 | 8,537 | 7,705
Allowances |  |  |
Disclosure of accounts receivable [line items] |  |  |
Accounts receivable | € 95 | € 113 | € 137

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