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Accounts receivable - Summary of Gross Value of Overdue Receivables (Details) - EUR (€) € in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | € 452 | € 455 | € 549
Less than 1 month |  |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | 118 | 169 | 271
1 to 3 months |  |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | 161 | 151 | 97
3 to 6 months |  |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | 87 | 67 | 52
6 to 12 months |  |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | 35 | 12 | 34
Later than 12 months |  |  |
Disclosure of financial assets that are either past due or impaired [line items] |  |  |
Overdue receivables gross value | € 51 | € 56 | € 95

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