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Segment information and information by geographical area - Revenue (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Geographical areas |  |  |
Sales from operations | € 76,575 | € 43,987 | € 69,881
Italy |  |  |
Geographical areas |  |  |
Sales from operations | 29,968 | 14,717 | 23,312
Other European Union |  |  |
Geographical areas |  |  |
Sales from operations | 14,671 | 9,508 | 18,567
Rest of Europe |  |  |
Geographical areas |  |  |
Sales from operations | 12,470 | 8,191 | 6,931
Americas |  |  |
Geographical areas |  |  |
Sales from operations | 4,420 | 2,426 | 3,842
Asia |  |  |
Geographical areas |  |  |
Sales from operations | 7,891 | 4,182 | 8,102
Africa |  |  |
Geographical areas |  |  |
Sales from operations | 7,040 | 4,842 | 8,998
Other areas |  |  |
Geographical areas |  |  |
Sales from operations | € 115 | € 121 | € 129

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