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v3.21.1

Equity - Additional information (Details) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 13, 2020 EUR (€) | Sep. 15, 2020 EUR (€) € / shares | May 13, 2020 EUR (€) € / shares shares | Oct. 31, 2020 EUR (€) instrument | Dec. 31, 2020 EUR (€) instrument shares | Dec. 31, 2019 EUR (€) shares | Dec. 31, 2018 EUR (€) | Oct. 13, 2049 | Jan. 13, 2046 | Oct. 13, 2034 | Jan. 13, 2031 | Oct. 13, 2029 | Jan. 13, 2026
Share capital |  |  |  |  | € 4,005,000,000 | € 4,005,000,000 |  |  |  |  |  |  |
Dividend per share to fully settle prior year dividend | € / shares |  |  | € 0.43 |  |  |  |  |  |  |  |  |  |
Dividends recognised as distributions to owners per share | € / shares |  |  | 0.86 |  |  |  |  |  |  |  |  |  |
Interim dividends paid per share relating to prior year | € / shares |  |  | € 0.43 |  |  |  |  |  |  |  |  |  |
Cancellation of treasury shares, number | shares |  |  | 28,590,482 |  |  |  |  |  |  |  |  |  |
Interim dividend distribution of Eni SpA |  |  |  |  | 429,000,000 | 1,542,000,000 | € 1,513,000,000 |  |  |  |  |  |
Costs for the issue of perpetual subordinated bonds |  |  |  |  | 25,000,000 |  |  |  |  |  |  |  |
Other reserves |  |  |  |  | € 190,000,000 | € 190,000,000 |  |  |  |  |  |  |
Number of treasury shares | shares |  |  |  |  | 33,045,197 | 61,635,679 |  |  |  |  |  |  |
Treasury shares |  |  |  |  | € 581,000,000 | € 981,000,000 |  |  |  |  |  |  |
Distributable reserves |  |  |  |  | 30,000,000,000 |  |  |  |  |  |  |  |
Long-Term Monetary Incentive Plan 2020 - 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Authorised number of treasury shares to be disposed | shares |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |
Other reserves and equity instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation of treasury shares |  |  | € (399,999,994.58) |  | (400,000,000) |  |  |  |  |  |  |  |
Merger reserve |  |  |  |  |  |  |  |  |  |  |  |  |
Other reserves |  |  |  |  | € 127,000,000 |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  |  |  |  |  |  |
Interim dividend distribution of Eni SpA |  | € 429,000,000 |  |  |  |  |  |  |  |  |  |  |
Interim dividends paid per share | € / shares |  | € 0.12 |  |  |  |  |  |  |  |  |  |  |
Perpetual subordinated bonds |  |  |  |  |  |  |  |  |  |  |  |  |
Number of euro-denominated perpetual subordinated hybrid bonds issued | instrument |  |  |  | 2 | 2 |  |  |  |  |  |  |  |
Notional amount |  |  |  | € 3,000,000,000 | € 3,000,000 |  |  |  |  |  |  |  |
Costs for the issue of perpetual subordinated bonds |  |  |  |  | 25,000,000 |  |  |  |  |  |  |  |
Perpetual subordinated bond, one |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Term of the bonds | 5 years 3 months |  |  |  |  |  |  |  |  |  |  |  |
Reoffer price (as a percent) | 99.403% |  |  |  |  |  |  |  |  |  |  |  |
Annual fixed coupon (as a percent) | 2.625% |  |  |  |  |  |  |  |  |  |  |  |
Perpetual subordinated bond, one | Five Year Euro Mid Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |
Initial spread on variable rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 3.167%
Additional spread on variable rate (as a percent) |  |  |  |  |  |  |  |  | 0.75% |  | 0.25% |  |
Perpetual subordinated bond, two |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | € 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Term of the bonds | 9 years |  |  |  |  |  |  |  |  |  |  |  |
Reoffer price (as a percent) | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Annual fixed coupon (as a percent) | 3.375% |  |  |  |  |  |  |  |  |  |  |  |
Perpetual subordinated bond, two | Five Year Euro Mid Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |
Initial spread on variable rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 3.641% |
Additional spread on variable rate (as a percent) |  |  |  |  |  |  |  | 0.75% |  | 0.25% |  |  |
ENI SpA |  |  |  |  |  |  |  |  |  |  |  |  |
Share capital |  |  |  |  | € 4,005,358,876 | € 4,005,358,876 |  |  |  |  |  |  |
ENI SpA | Ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  | 3,605,594,848 | 3,634,185,330 |  |  |  |  |  |  |

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