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Provisions for contingencies (Tables)
 12 Months Ended
Dec. 31, 2018
Provisions for contingencies [Member]  
Disclosure of other Provisions Contingent Liabilities and Contingent Assets Explanatory [Line Items]  
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
losses on
investments
 
Provision
for
OIL
insurance
cover
 
Provision
for
redundancy
incentives
 
Provision
for
disposal and
restructuring
 
Provision
for
onerous
contracts
 
Other(*)
 
Total
Carrying amount at December 31, 2017
 
 
8,126
 
 
 
2,653
 
 
 
1,107
 
 
 
527
 
 
 
205
 
 
 
182
 
 
 
76
 
 
 
140
 
 
 
65
 
 
 
60
 
 
 
306
 
 
 
13,447
 
New or increased provisions
 
 
 
 
 
 
299
 
 
 
148
 
 
 
73
 
 
 
493
 
 
 
48
 
 
 
51
 
 
 
9
 
 
 
19
 
 
 
 
 
 
 
223
 
 
 
1,363
 
Initial recognition and changes in estimates
 
 
(502
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(502
)
Accretion discount
 
 
259
 
 
 
(12
)
 
 
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
249
 
Reversal of utilized provisions
 
 
(190
)
 
 
(287
)
 
 
(214
)
 
 
(118
)
 
 
(481
)
 
 
 
 
 
 
 
 
 
 
(17
)
 
 
(14
)
 
 
(22
)
 
 
(100
)
 
 
(1,443
)
Reversal of unutilized provisions
 
 
 
 
 
 
(33
)
 
 
(289
)
 
 
(31
)
 
 
 
 
 
 
(1
)
 
 
 
 
 
 
(17
)
 
 
 
 
 
 
 
 
 
 
(18
)
 
 
(389
)
Changes in the scope of consolidation
 
 
(1,024
)
 
 
(11
)
 
 
(1
)
 
 
(8
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(5
)
 
 
 
 
 
 
 
 
 
 
(2
)
 
 
(1,051
)
Currency translation differences
 
 
153
 
 
 
 
 
 
 
34
 
 
 
17
 
 
 
 
 
 
 
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4
 
 
 
210
 
Other changes
 
 
(45
)
 
 
(14
)
 
 
37
 
 
 
(20
)
 
 
110
 
 
 
(27
)
 
 
3
 
 
 
(2
)
 
 
(4
)
 
 
 
 
 
 
(36
)
 
 
2
 
Carrying amount at December 31, 2018
 
 
6,777
 
 
 
2,595
 
 
 
824
 
 
 
440
 
 
 
327
 
 
 
204
 
 
 
130
 
 
 
108
 
 
 
66
 
 
 
38
 
 
 
377
 
 
 
11,886
 
 
 
 
(*)       Each individual amount included herein was lower than €50 million.