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Finance debts - Long-term debt (Details) - EUR (€) € in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Borrowings |  |
Long-term debt | € 18,910 | € 20,082
Later than one year and not later than two years |  |
Borrowings |  |
Long-term debt | 1,691 |
Later than two years and not later than three years |  |
Borrowings |  |
Long-term debt | 1,250 |
Later than three years and not later than four years |  |
Borrowings |  |
Long-term debt | 2,731 |
Later than four years and not later than five years |  |
Borrowings |  |
Long-term debt | 1,776 |
beyond 5 years |  |
Borrowings |  |
Long-term debt | 11,462 |
Banks |  |
Borrowings |  |
Long-term debt | 2,341 | 2,710
Banks | Later than one year and not later than two years |  |
Borrowings |  |
Long-term debt | 750 |
Banks | Later than two years and not later than three years |  |
Borrowings |  |
Long-term debt | 146 |
Banks | Later than three years and not later than four years |  |
Borrowings |  |
Long-term debt | 838 |
Banks | Later than four years and not later than five years |  |
Borrowings |  |
Long-term debt | 134 |
Banks | beyond 5 years |  |
Borrowings |  |
Long-term debt | 473 |
Ordinary Bonds |  |
Borrowings |  |
Long-term debt | 16,137 | 16,923
Ordinary Bonds | Later than one year and not later than two years |  |
Borrowings |  |
Long-term debt | 930 |
Ordinary Bonds | Later than two years and not later than three years |  |
Borrowings |  |
Long-term debt | 698 |
Ordinary Bonds | Later than three years and not later than four years |  |
Borrowings |  |
Long-term debt | 1,879 |
Ordinary Bonds | Later than four years and not later than five years |  |
Borrowings |  |
Long-term debt | 1,641 |
Ordinary Bonds | beyond 5 years |  |
Borrowings |  |
Long-term debt | 10,989 |
Convertible Bonds |  |
Borrowings |  |
Long-term debt | 393 | 390
Convertible Bonds | Later than two years and not later than three years |  |
Borrowings |  |
Long-term debt | 393 |
Other financial institutions |  |
Borrowings |  |
Long-term debt | 39 | € 59
Other financial institutions | Later than one year and not later than two years |  |
Borrowings |  |
Long-term debt | 11 |
Other financial institutions | Later than two years and not later than three years |  |
Borrowings |  |
Long-term debt | 13 |
Other financial institutions | Later than three years and not later than four years |  |
Borrowings |  |
Long-term debt | 14 |
Other financial institutions | Later than four years and not later than five years |  |
Borrowings |  |
Long-term debt | € 1 |

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