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Finance debt - Fair value of long-term debt (Details) - EUR (€) € in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Long-term debt and current portion of long-term debt |  |
Borrowings |  |
Financial liabilities, at fair value | € 21,011 | € 28,750
Long-term and current portion of long-term ordinary bonds and Sustainability-Linked Bond |  |
Borrowings |  |
Financial liabilities, at fair value | 18,167 | 23,070
Long-term and current portion of long-term convertible bonds |  |
Borrowings |  |
Financial liabilities, at fair value |  | 513
Long-term and current portion of long-term bank debt |  |
Borrowings |  |
Financial liabilities, at fair value | 2,733 | 5,029
Long-term and current portion of long-term debt with other financial institutions |  |
Borrowings |  |
Financial liabilities, at fair value | € 111 | € 138

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