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Transactions with related parties (Details) - Transactions and balances - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Transactions With Related Parties |  |  |
Receivables and other assets | € 1,563 | € 2,794 | € 1,822
Payables and other liabilities | 4,818 | 3,897 | 3,052
Guarantees | 8,041 | 8,503 | 2,135
Revenues | 4,478 | 11,028 | 3,052
Costs | 15,888 | 15,347 | 8,671
Other operating (expense) income | 17 | 3,306 | 735
Individual amount limit to be included in other related parties | 50 | 50 | 50
Joint ventures and associates and investments in unconsolidated entities controlled by Eni |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 663 | 853 | 536
Payables and other liabilities | 3,554 | 3,018 | 2,066
Guarantees | 8,041 | 8,503 | 2,135
Revenues | 383 | 439 | 380
Costs | 10,882 | 8,884 | 4,819
Other operating (expense) income | (165) | (597) | (409)
Joint ventures and associates |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 498 | 706 | 402
Payables and other liabilities | 3,540 | 3,004 | 2,060
Guarantees | 7,845 | 8,301 | 1,945
Revenues | 358 | 417 | 359
Costs | 10,852 | 8,869 | 4,809
Other operating (expense) income | (165) | (597) | (409)
Agiba Petroleum Co |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 1 | 17 | 13
Payables and other liabilities | 194 | 71 | 57
Costs | 308 | 224 | 189
Cardon IV SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 24 |  |
Payables and other liabilities | 142 |  |
Revenues | 4 |  |
Costs | 1 |  |
Angola LNG Ltd |  |  |
Transactions With Related Parties |  |  |
Costs |  | 79 | 73
Angola LNG Supply Services Llc |  |  |
Transactions With Related Parties |  |  |
Guarantees |  |  | 179
Coral FLNG SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 4 | 10 | 17
Guarantees | 1,327 | 1,378 | 1,260
Revenues | 6 | 12 | 43
Azule Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 113 | 320 |
Payables and other liabilities | 475 | 517 |
Guarantees | 3,156 | 3,268 |
Revenues | 86 | 46 |
Costs | 2,146 | 1,152 |
Saipem Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 5 | 3 | 4
Payables and other liabilities | 235 | 195 | 134
Guarantees | 9 | 9 | 9
Revenues | 6 | 9 | 28
Costs | 768 | 452 | 174
SeaCorridor Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 29 |  |
Payables and other liabilities | 29 |  |
Revenues | 1 |  |
Costs | 357 |  |
Vårgrønn Group |  |  |
Transactions With Related Parties |  |  |
Guarantees | 1,321 | 1,259 |
Karachaganak Petroleum Operating BV |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 17 | 27 | 24
Payables and other liabilities | 250 | 251 | 213
Costs | 1,183 | 1,347 | 989
Mellitah Oil & Gas BV |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 49 | 58 | 65
Payables and other liabilities | 20 | 144 | 290
Revenues | 16 | 9 | 3
Costs | 517 | 234 | 263
Petrobel Belayim Petroleum Co |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 58 | 33 | 24
Payables and other liabilities | 885 | 595 | 391
Revenues |  |  | 2
Costs | 870 | 944 | 651
Societa Oleodotti Meridionali SpA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 11 | 6 | 6
Payables and other liabilities | 473 | 433 | 396
Revenues | 19 | 16 | 18
Costs | 12 | 14 | 12
Societe Centrale Electrique du Congo SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 74 | 47 | 50
Revenues | 79 | 74 | 66
Var Energi ASA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 51 | 58 | 62
Payables and other liabilities | 764 | 722 | 526
Guarantees | 2,013 | 2,378 | 495
Revenues | 58 | 84 | 104
Costs | 4,487 | 4,085 | 2,224
Other operating (expense) income | (165) | (597) | (409)
Other joint ventures and associates |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 62 | 127 | 137
Payables and other liabilities | 73 | 76 | 53
Guarantees | 19 | 9 | 2
Revenues | 83 | 167 | 95
Costs | 203 | 338 | 234
Investments in unconsolidated entities controlled by Eni |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 165 | 147 | 134
Payables and other liabilities | 14 | 14 | 6
Guarantees | 196 | 202 | 190
Revenues | 25 | 22 | 21
Costs | 30 | 15 | 10
Eni BTC Ltd |  |  |
Transactions With Related Parties |  |  |
Guarantees | 183 | 190 | 179
Industria Siciliana Acido Fosforico ISAF SPA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 152 | 139 | 124
Payables and other liabilities | 4 | 4 | 1
Guarantees | 1 | 1 | 1
Revenues | 12 | 15 | 13
Other unconsolidated subsidiaries |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 13 | 8 | 10
Payables and other liabilities | 10 | 10 | 5
Guarantees | 12 | 11 | 10
Revenues | 13 | 7 | 8
Costs | 30 | 15 | 10
Entities controlled by the Government |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 677 | 1,762 | 1,116
Payables and other liabilities | 1,050 | 763 | 905
Revenues | 4,054 | 10,555 | 2,642
Costs | 4,401 | 6,007 | 3,597
Other operating (expense) income | 182 | 3,903 | 1,144
Cassa Depositi e Prestiti Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 5 | 2 |
Payables and other liabilities | 33 | 47 |
Revenues | 2 | 3 |
Costs | 69 | 86 |
Enel Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 95 | 438 | 583
Payables and other liabilities | 168 | 264 | 461
Revenues | 93 | 97 | 41
Costs | 497 | 275 | 417
Other operating (expense) income | (109) | 484 | 373
Italgas Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 1 | 218 | 1
Payables and other liabilities | 149 | 8 | 49
Revenues | 8 | 84 | 3
Costs | (20) |  | 560
Snam Group [Member] |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 245 | 763 | 160
Payables and other liabilities | 352 | 25 | 152
Revenues | 1,157 | 1,767 | 159
Costs | 1,625 | 873 | 1,013
Other operating (expense) income |  |  | 1
Terna Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 85 | 119 | 51
Payables and other liabilities | 61 | 159 | 85
Revenues | 400 | 612 | 203
Costs | 317 | 701 | 309
Other operating (expense) income | 8 | (18) | 4
GSE - Gestore Servizi Energetici |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 230 | 207 | 311
Payables and other liabilities | 219 | 225 | 125
Revenues | 2,104 | 7,786 | 2,216
Costs | 1,875 | 4,039 | 1,238
Other operating (expense) income | 283 | 3,437 | 766
ITA Airways - Italia Trasporto Aereo SpA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 5 | 3 |
Revenues | 238 | 179 |
Other entities controlled by government |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 11 | 12 | 10
Payables and other liabilities | 68 | 35 | 33
Revenues | 52 | 27 | 20
Costs | 38 | 33 | 60
Other related parties |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 1 |  |
Payables and other liabilities | 2 | 2 | 2
Revenues | 1 | 1 |
Costs | 36 | 39 | 33
Pension funds |  |  |
Transactions With Related Parties |  |  |
Costs | 27 |  |
Fondazione Eni Enrico Mattei |  |  |
Transactions With Related Parties |  |  |
Costs | 5 |  |
Eni Foundation |  |  |
Transactions With Related Parties |  |  |
Costs | 4 |  |
Groupement Sonatrach – Eni «GSE» |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 222 | 179 |
Payables and other liabilities | 212 | 114 |
Revenues | 40 | 33 |
Costs | € 569 | € 417 |
Groupement Sonatrach Agip and Organe Conjoint des Operations |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets |  |  | 170
Payables and other liabilities |  |  | 79
Revenues |  |  | 30
Costs |  |  | € 222

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