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Inventories - Schedule of Inventories (Details) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Disclosure of inventories [line items] |  |  |
Raw materials | € 1,550 | € 1,474 | € 1,278
Work in process | 5,316 | 4,985 | 5,025
Finished goods | 2,800 | 2,501 | 2,412
Total | 9,666 | 8,960 | 8,715
Gross value |  |  |
Disclosure of inventories [line items] |  |  |
Raw materials | 1,676 | 1,613 | 1,344
Work in process | 5,869 | 5,663 | 5,579
Finished goods | 3,045 | 2,748 | 2,696
Total | 10,590 | 10,024 | 9,619
Allowances |  |  |
Disclosure of inventories [line items] |  |  |
Raw materials | 126 | 139 | 66
Work in process | 553 | 678 | 554
Finished goods | 245 | 247 | 284
Total | € 924 | € 1,064 | € 904

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