XML 232 R161.htm IDEA: XBRL DOCUMENT
v3.19.1

Deferred tax assets and liabilities (Details 1) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure Of Deferred Tax Liabilities [Line Items] |  |
Changes in accounting principles (IFRS 15) Deferred Tax Liabilities | € 37 |
Changes in accounting principles (IFRS 15) Deferred Tax Assets | (237) |
Changes in accounting principles (IFRS 15) Deferred Tax Assets, net of impairments | (237) |
Deferred Tax Liabilities Gross | 10,169 | € 10,953
Deductions, Deferred Tax Liabilities Gross | (802) | (835)
Currency Translation Differences, Deferred Tax Liabilities Gross | 283 | (1,123)
Decrease through loss of control of subsidiary, Deferred tax liabilities Gross | (2,778) |
Other Changes, Deferred Tax Liabilities Gross | (100) | 3
Deferred Tax Assets, Gross | (13,609) | (13,698)
Additions Deferred Tax Assets Gross | (1,478) | (2,341)
Deductions Deferred Tax Assets Gross | 1,523 | 1,588
Currency Translation Differences Deferred Tax Assets Gross | (278) | 862
Decrease through loss of control of subsidiary Deferred tax assets Gross | 813 |
Other Changes Deferred Tax Assets Gross | (90) | (20)
Deferred Tax Assets, Gross | (13,356) | (13,609)
Provision For Accumulated write-down of Deferred Tax Assets | 5,262 | 5,622
Additions Deferred Tax Assets Accumulated write-down | 253 | 212
Deductions Deferred Tax Assets Accumulated write-down | (43) | (349)
Currency Translation Differences Deferred Tax Assets Accumulated write-down | 71 | (202)
Other Changes Deferred Tax Assets Accumulated write-down | 198 | (21)
Provision For Accumulated write-down of Deferred Tax Assets | 5,741 | 5,262
Deferred Tax Assets, Net of Valuation Allowance | (8,347) | (8,076)
Additions Deferred Tax Assets Net | (1,225) | (2,129)
Deductions Deferred Tax Assets Net | 1,480 | 1,239
Currency Translation Differences Deferred Tax Assets Net | (207) | 660
Decrease through loss of control of subsidiary Differences Deferred Tax Assets Net | 813 |
Other Changes Deferred Tax Assets Net | 108 | (41)
Deferred Tax Assets, Net of Valuation Allowance | (7,615) | (8,347)
Deferred tax assets, gross [Member] |  |
Disclosure Of Deferred Tax Liabilities [Line Items] |  |
Deferred Tax Assets, Gross | (13,846) |
Deferred Tax Assets, Gross |  | (13,846)
Accumulated write-downs of deferred tax assets |  |
Disclosure Of Deferred Tax Liabilities [Line Items] |  |
Provision For Accumulated write-down of Deferred Tax Assets | 5,262 |
Provision For Accumulated write-down of Deferred Tax Assets |  | 5,262
Deferred tax assets, net of impairments [Member] |  |
Disclosure Of Deferred Tax Liabilities [Line Items] |  |
Deferred Tax Assets, Net of Valuation Allowance | € (8,584) |
Deferred Tax Assets, Net of Valuation Allowance |  | € (8,584)

X
- Definition The additional amount of deferred tax assets gross. + References No definition available. + Details
Name: | e_AdditionsDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The additional amount of deferred tax assets Impairments. + References No definition available. + Details
Name: | e_AdditionsDeferredTaxAssetsImpairments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The additional amount of deferred tax assets net. + References No definition available. + Details
Name: | e_AdditionsDeferredTaxAssetsNet
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of Changes in accounting policies of deferred tax assets. + References No definition available. + Details
Name: | e_ChangesInAccountingPrinciplesDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Changes In Accounting Principles Deferred Tax Assets, net of impairments + References No definition available. + Details
Name: | e_ChangesInAccountingPrinciplesDeferredTaxAssetsNetOfImpairments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of Changes in accounting policies of deferred tax liabilities. + References No definition available. + Details
Name: | e_ChangesInAccountingPrinciplesDeferredTaxLiabilities
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The differences amount for currency translation of deferred tax assets gross. + References No definition available. + Details
Name: | e_CurrencyTranslationDifferencesDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The differences amount for currency translation of deferred tax assets Impairments. + References No definition available. + Details
Name: | e_CurrencyTranslationDifferencesDeferredTaxAssetsImpairments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The differences amount for currency translation of deferred tax assets net. + References No definition available. + Details
Name: | e_CurrencyTranslationDifferencesDeferredTaxAssetsNet
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The differences amount for currency translation of deferred tax liabilities gross. + References No definition available. + Details
Name: | e_CurrencyTranslationDifferencesDeferredTaxLiabilitiesGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of Decrease through loss of control of subsidiary Deferred tax assets Gross + References No definition available. + Details
Name: | e_DecreaseThroughLossOfControlOfSubsidiaryDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of Decrease through loss of control of subsidiary Deferred tax liabilities + References No definition available. + Details
Name: | e_DecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilities
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of Decrease through loss of control of subsidiary Differences Deferred Tax Assets Net + References No definition available. + Details
Name: | e_DecreaseThroughLossOfControlOfSubsidiaryDifferencesDeferredTaxAssetsNet
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of deferred tax assets gross deducted during the period. + References No definition available. + Details
Name: | e_DeductionsDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the deductions in the deferred tax asset impairments. + References No definition available. + Details
Name: | e_DeductionsDeferredTaxAssetsImpairments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the deductions in the net deferred tax assets. + References No definition available. + Details
Name: | e_DeductionsDeferredTaxAssetsNet
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The deduction in deferred tax liabilities. + References No definition available. + Details
Name: | e_DeductionsDeferredTaxLiabilitiesGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amounts of income taxes payable in future periods in respect of deferred tax liabilities gross. + References No definition available. + Details
Name: | e_DeferredTaxLiabilitiesGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition DisclosureOfDeferredTaxLiabilitieslineitem + References No definition available. + Details
Name: | e_DisclosureOfDeferredTaxLiabilitiesLineItems
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The other changes amount of deferred tax assets gross. + References No definition available. + Details
Name: | e_OtherChangesDeferredTaxAssetsGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The other changes amount of deferred tax assets Impairments. + References No definition available. + Details
Name: | e_OtherChangesDeferredTaxAssetsImpairments
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The other changes amount of deferred tax assets net. + References No definition available. + Details
Name: | e_OtherChangesDeferredTaxAssetsNet
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The other changes amount of deferred tax liabilities gross. + References No definition available. + Details
Name: | e_OtherChangesDeferredTaxLiabilitiesGross
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amounts of income taxes receivable in future periods in respect of provision for impairments deferred tax assets. + References No definition available. + Details
Name: | e_ProvisionForImpairmentsDeferredTaxAssets
Namespace Prefix: | e_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | e_EquityReserveCarryingAmountDeferredTaxLiabilitiesAxis=e_DeferredTaxAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_EquityReserveCarryingAmountDeferredTaxLiabilitiesAxis=e_ImpairmentsOfDeferredTaxAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | e_EquityReserveCarryingAmountDeferredTaxLiabilitiesAxis=e_DeferredTaxAssetsNetOfImpairmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |