XML 217 R121.htm IDEA: XBRL DOCUMENT
v3.22.1

Impairment review of tangible and intangible assets and right-of-use assets - Additional Information (Details) | 12 Months Ended | 168 Months Ended | 252 Months Ended
--- | --- | --- | ---
Dec. 31, 2050 $ / bbl $ / MMBTU | Dec. 31, 2021 $ / bbl $ / MMBTU | Dec. 31, 2020 $ / MMBTU $ / bbl | Dec. 31, 2035 $ / bbl | Dec. 31, 2045 $ / MMBTU
Impairment review of tangible and intangible assets and right-of-use assets |  |  |  |  |
Estimated cost of equity (in percent) |  | 10.00% |  |  |
Risk-adjusted weighted average cost of capital (adjusted WACC) (in percent) |  | 7.00% |  |  |
Risk-adjusted post-tax WACC if reversal of more than $100 million |  | 6.80% |  |  |
Risk-adjusted pre-tax WACC |  | 18.00% |  |  |
Percentage by which headroom is higher than book value |  | 90.00% |  |  |
Forecast |  |  |  |  |
Impairment review of tangible and intangible assets and right-of-use assets |  |  |  |  |
Long-term price of the Brent crude oil benchmark | $ / bbl | 46 |  |  | 62 |
Brent price per bbl, one year forecast | $ / bbl |  | 80 | 55 |  |
Brent price per bbl, year two forecast | $ / bbl |  | 75 | 60 |  |
Spot gas benchmark European reference price, one year forecast | $ / MMBTU |  | 21.2 | 4.7 |  |
Spot gas benchmark European reference price, year two forecast | $ / MMBTU |  | 14.4 | 4.9 |  |
Long-term gas price | $ / MMBTU | 6.2 |  |  |  | 8.5
Maximum |  |  |  |  |
Impairment review of tangible and intangible assets and right-of-use assets |  |  |  |  |
Post-tax, risk-adjusted WACC (in percent) |  | 10.70% |  |  |
Minimum |  |  |  |  |
Impairment review of tangible and intangible assets and right-of-use assets |  |  |  |  |
Post-tax, risk-adjusted WACC (in percent) |  | 6.50% |  |  |

X
- Definition Brent price per bbl, year one forecast + References No definition available. + Details
Name: | e_BrentPricePerBblYearOneForecast
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Brent price per bbl, year two forecast + References No definition available. + Details
Name: | e_BrentPricePerBblYearTwoForecast
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Impairment Of Assets Explanatory [Line Item] + References No definition available. + Details
Name: | e_DisclosureOfImpairmentOfAssetsExplanatoryLineItems
Namespace Prefix: | e_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of estimated cost of equity. + References No definition available. + Details
Name: | e_EstimatedPercentageOfCostOfEquity
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represent about long term assumption for benchmark Brent price. + References No definition available. + Details
Name: | e_LongTermAssumptionForBenchmarkBrentPrice
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition The element represent about long term assumption for benchmark gas price. + References No definition available. + Details
Name: | e_LongTermAssumptionForBenchmarkGasPrice
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage by which headroom is higher than book value. + References No definition available. + Details
Name: | e_PercentageByWhichHeadroomIsHigherThanBookValue
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of risk-adjusted weighted average cost of capital. + References No definition available. + Details
Name: | e_PercentageOfRiskAdjustedWeightedAverageCostOfCapital
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Spot gas benchmark European reference price, one year forecast + References No definition available. + Details
Name: | e_SpotGasBenchmarkEuropeanReferencePriceOneYearForecast
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Spot gas benchmark European reference price, year two forecast + References No definition available. + Details
Name: | e_SpotGasBenchmarkEuropeanReferencePriceYearTwoForecast
Namespace Prefix: | e_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted Average Cost Of Capital Post-Tax Rate Percentage + References No definition available. + Details
Name: | e_WeightedAverageCostOfCapitalPostTaxRatePercentage
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the post-tax, risk-adjusted WACC if the reversal of impairment loss more than $100 million. + References No definition available. + Details
Name: | e_WeightedAverageCostOfCapitalPostTaxRatePercentageIfReversalOfImpairmentLossMoreThan100Million
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the pre tax percentage of weighted average cost of capital. + References No definition available. + Details
Name: | e_WeightedAverageCostOfCapitalPreTaxRatePercentage
Namespace Prefix: | e_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |