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Segment information and information by geographical area - Identifiable assets and investments (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Geographical areas |  |  |
Assets | € 109,648 | € 123,440 |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 4,644 | 8,376 | € 9,119
Italy |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 1,198 | 1,402 | 1,424
Other European Union |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 152 | 306 | 267
Rest of Europe |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 119 | 9 | 538
Americas |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 441 | 1,017 | 534
Asia |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 1,267 | 1,685 | 1,782
Africa |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 1,443 | 3,902 | 4,533
Other areas |  |  |
Geographical areas |  |  |
Capital expenditure in tangible and intangible assets and prepaid right-of-use assets | 24 | 55 | 41
Allocated amounts |  |  |
Geographical areas |  |  |
Assets | 79,604 | 91,795 | 85,483
Allocated amounts | Italy |  |  |
Geographical areas |  |  |
Assets | 17,228 | 19,346 | 18,646
Allocated amounts | Other European Union |  |  |
Geographical areas |  |  |
Assets | 4,159 | 7,237 | 7,086
Allocated amounts | Rest of Europe |  |  |
Geographical areas |  |  |
Assets | 3,174 | 1,151 | 1,031
Allocated amounts | Americas |  |  |
Geographical areas |  |  |
Assets | 4,485 | 5,230 | 4,546
Allocated amounts | Asia |  |  |
Geographical areas |  |  |
Assets | 16,360 | 17,898 | 16,910
Allocated amounts | Africa |  |  |
Geographical areas |  |  |
Assets | 33,341 | 40,021 | 36,155
Allocated amounts | Other areas |  |  |
Geographical areas |  |  |
Assets | € 857 | € 912 | € 1,109

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