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Provisions for contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Provisions For Contingent [Abstract] |
Disclosure of other provisions [text block] |
(€ million) |  | Provision for site restoration, abandonment and social projects |  | Environmental provision |  | Provision for litigations |  | Provision for taxes |  | Loss adjustments and actuarial provisions for Eni’s insurance companies |  | Provision for redundancy incentives |  | Provision for onerous contracts |  | Provision for losses on investments |  | Provision for OIL insurance cover |  | Provision for disposal and restructuring |  | Other(*) |  | Total
Carrying amount at December 31, 2016 |  |  | 8,419 |  |  |  | 2,691 |  |  |  | 954 |  |  |  | 732 |  |  |  | 207 |  |  |  | 176 |  |  |  | 165 |  |  |  | 153 |  |  |  | 88 |  |  |  | 58 |  |  |  | 253 |  |  |  | 13,896 |
New or increased provisions |  |  |  |  |  |  | 217 |  |  |  | 567 |  |  |  | 162 |  |  |  | 181 |  |  |  | 9 |  |  |  |  |  |  |  | 46 |  |  |  |  |  |  |  | 16 |  |  |  | 193 |  |  |  | 1,391 |
Initial recognition and changes in estimates |  |  | 370 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 370 |
Accretion discount |  |  | 271 |  |  |  | (9 | ) |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2 | ) |  |  | 264 |
Reversal of utilized provisions |  |  | (289 | ) |  |  | (237 | ) |  |  | (281 | ) |  |  | (225 | ) |  |  | (190 | ) |  |  | (17 | ) |  |  | (99 | ) |  |  |  |  |  |  |  |  |  |  | (13 | ) |  |  | (75 | ) |  |  | (1,426 | )
Reversal of unutilized provisions |  |  | (10 | ) |  |  | (17 | ) |  |  | (50 | ) |  |  | (52 | ) |  |  |  |  |  |  | (32 | ) |  |  | (1 | ) |  |  | (10 | ) |  |  | (3 | ) |  |  |  |  |  |  | (25 | ) |  |  | (200 | )
Currency translation differences |  |  | (646 | ) |  |  | (1 | ) |  |  | (95 | ) |  |  | (66 | ) |  |  |  |  |  |  |  |  |  |  | (7 | ) |  |  | (7 | ) |  |  | (1 | ) |  |  |  |  |  |  | (11 | ) |  |  | (834 | )
Other changes |  |  | 11 |  |  |  | 9 |  |  |  | 11 |  |  |  | (24 | ) |  |  | 7 |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  | (8 | ) |  |  | 4 |  |  |  | (27 | ) |  |  | (14 | )
Carrying amount at December 31, 2017 |  |  | 8,126 |  |  |  | 2,653 |  |  |  | 1,107 |  |  |  | 527 |  |  |  | 205 |  |  |  | 140 |  |  |  | 60 |  |  |  | 182 |  |  |  | 76 |  |  |  | 65 |  |  |  | 306 |  |  |  | 13,447 |
_________
| (*) | Each individual amount included herein was lower than €50 million.

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- References No definition available. + Details
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- Definition The disclosure of other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2017-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_84&doctype=Standard -URIDate 2017-03-09 + Details
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