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Transactions with related parties (Details) - Transactions and balances - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Transactions With Related Parties |  |  |
Receivables and other assets | € 1,021 | € 1,104 | € 864
Payables and other liabilities | 2,575 | 2,841 | 3,750
Guarantees | 2,443 | 2,596 | 2,588
Revenues | 1,199 | 1,252 | 1,391
Costs | 6,637 | 9,173 | 8,005
Other operating (expense) income | 13 | 19 | 319
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 | 533 | 485 | 329
Payables and other liabilities | 1,818 | 2,009 | 2,872
Guarantees | 2,443 | 2,596 | 2,588
Revenues | 321 | 305 | 353
Costs | 3,448 | 5,466 | 4,526
Other operating (expense) income | (121) | (1) | 11
Joint ventures and associates |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 416 | 379 | 236
Payables and other liabilities | 1,794 | 1,983 | 2,848
Guarantees | 2,267 | 2,399 | 2,392
Revenues | 306 | 285 | 335
Costs | 3,439 | 5,448 | 4,513
Other operating (expense) income | (121) | (1) | 11
Agiba Petroleum Co |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 6 | 3 | 1
Payables and other liabilities | 52 | 71 | 96
Costs | 201 | 229 | 156
Angola LNG Supply Services Llc |  |  |
Transactions With Related Parties |  |  |
Guarantees | 165 | 181 | 177
Coral FLNG SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 6 | 15 | 14
Guarantees | 1,079 | 1,168 | 1,147
Revenues | 49 | 71 | 62
Gas Distribution Company of Thessaloniki Thessaly SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets |  |  | 1
Payables and other liabilities | 13 | 13 | 18
Costs | 52 | 53 | 51
Saipem Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 87 | 75 | 75
Payables and other liabilities | 254 | 227 | 171
Guarantees | 509 | 510 | 793
Revenues | 18 | 27 | 30
Costs | 350 | 503 | 420
Karachaganak Petroleum Operating BV |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 25 | 33 | 27
Payables and other liabilities | 141 | 198 | 134
Revenues |  | 1 | 1
Costs | 816 | 1,134 | 998
Mellitah Oil & Gas BV |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 54 | 57 | 1
Payables and other liabilities | 250 | 171 | 268
Revenues | 2 | 3 | 1
Costs | 156 | 365 | 502
Petrobel Belayim Petroleum Co |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 65 | 50 | 56
Payables and other liabilities | 467 | 1,130 | 2,029
Revenues |  | 7 | 7
Costs | 556 | 1,590 | 2,282
Societa Oleodotti Meridionali SpA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 3 |  |
Payables and other liabilities | 399 |  |
Revenues | 20 |  |
Costs | 15 |  |
Societe Centrale Electrique du Congo SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 48 |  |
Revenues | 57 |  |
Union Fenosa Gas SA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 11 | 8 | 4
Payables and other liabilities | 4 | 1 | 7
Guarantees | 57 | 57 | 57
Revenues | 9 | 1 | 123
Costs |  | 6 |
Other operating (expense) income | (3) | 63 | 37
Var Energi AS |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 39 | 32 | 13
Payables and other liabilities | 190 | 143 | 100
Guarantees | 456 | 482 | 218
Revenues | 85 | 63 |
Costs | 1,126 | 1,481 |
Other operating (expense) income | (118) | (64) |
Other joint ventures and associates |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 72 | 106 | 44
Payables and other liabilities | 24 | 29 | 25
Guarantees | 1 | 1 |
Revenues | 66 | 112 | 111
Costs | 167 | 87 | 104
Other operating (expense) income |  |  | (26)
Investments in unconsolidated entities controlled by Eni |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 117 | 106 | 93
Payables and other liabilities | 24 | 26 | 24
Guarantees | 176 | 197 | 196
Revenues | 15 | 20 | 18
Costs | 9 | 18 | 13
Eni BTC Ltd |  |  |
Transactions With Related Parties |  |  |
Guarantees | 165 | 180 | 177
Industria Siciliana Acido Fosforico ISAF SPA |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 112 | 101 | 87
Payables and other liabilities | 1 | 1 | 1
Guarantees | 1 | 3 | 5
Revenues | 11 | 14 | 11
Other unconsolidated subsidiaries |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 5 | 5 | 6
Payables and other liabilities | 23 | 25 | 23
Guarantees | 10 | 14 | 14
Revenues | 4 | 6 | 7
Costs | 9 | 18 | 13
Entities controlled by the Government |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 400 | 542 | 494
Payables and other liabilities | 701 | 755 | 736
Revenues | 857 | 909 | 1,000
Costs | 2,874 | 3,213 | 3,218
Other operating (expense) income | 134 | 20 | 308
Enel Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 104 | 185 | 134
Payables and other liabilities | 165 | 284 | 151
Revenues | 51 | 105 | 118
Costs | 551 | 602 | 514
Other operating (expense) income | 86 | (8) | 227
Italgas Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 1 | 3 | 5
Payables and other liabilities | 177 | 154 | 146
Revenues | 3 | 1 | 23
Costs | 714 | 677 | 667
Snam Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 189 | 278 | 237
Payables and other liabilities | 211 | 229 | 289
Revenues | 45 | 71 | 109
Costs | 1,012 | 1,208 | 1,184
Other operating (expense) income |  |  | (1)
Terna Group |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 46 | 40 | 26
Payables and other liabilities | 62 | 45 | 47
Revenues | 152 | 171 | 150
Costs | 225 | 223 | 231
Other operating (expense) income | 8 | 17 | 8
GSE Gestore Servizi Energetic |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 52 | 26 | 67
Payables and other liabilities | 37 | 24 | 85
Revenues | 586 | 549 | 555
Costs | 309 | 468 | 588
Other operating (expense) income | 40 | 11 | 74
Other entities controlled by government |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 8 | 10 | 25
Payables and other liabilities | 49 | 19 | 18
Revenues | 20 | 12 | 45
Costs | 63 | 35 | 34
Other related parties |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 1 | 2 | 1
Payables and other liabilities | 4 | 3 | 2
Revenues | 2 | 5 | 4
Costs | 53 | 37 | 32
Pension funds |  |  |
Transactions With Related Parties |  |  |
Costs | 40 |  |
Fondazione Eni Enrico Mattei |  |  |
Transactions With Related Parties |  |  |
Costs | 5 |  |
Eni Foundation |  |  |
Transactions With Related Parties |  |  |
Costs | 1 |  |
Groupement Sonatrach Agip and Organe Conjoint des Operations |  |  |
Transactions With Related Parties |  |  |
Receivables and other assets | 87 | 75 | 40
Payables and other liabilities | 52 | 74 | 140
Revenues | 19 | 33 | 34
Costs | € 262 | € 457 | € 229

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