Additional advance payment.

No definition available.

Name:	ello_AdditionalAdvancePayment
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Adjusted amount of funds received.

+ References

No definition available.

+ Details

Name:	ello_AdjustedAmountOfFundsReceived
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Advance payment.

+ References

No definition available.

+ Details

Name:	ello_AdvancePayment
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount receivable for subsidy payments.

+ References

No definition available.

+ Details

Name:	ello_AmountReceivableForSubsidyPayments
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Associated expenses in equity.

+ References

No definition available.

+ Details

Name:	ello_AssociatedExpensesInEquity
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Capital gain.

+ References

No definition available.

+ Details

Name:	ello_CapitalGain
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Deferred aggregate purchase price.

+ References

No definition available.

+ Details

Name:	ello_DeferredAggregatePurchasePrice
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Deferred payment received

+ References

No definition available.

+ Details

Name:	ello_DeferredPaymentReceived
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Electricity produced per KWP.

+ References

No definition available.

+ Details

Name:	ello_ElectricityProducedPerKwp
Namespace Prefix:	ello_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Fixed and lump-sum amount.

+ References

No definition available.

+ Details

Name:	ello_FixedAndLumpsumAmount
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Green gas production capacity per year

+ References

No definition available.

+ Details

Name:	ello_GreenGasProductionCapacity
Namespace Prefix:	ello_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Indemnification for potential incentive reduction.

+ References

No definition available.

+ Details

Name:	ello_IndemnificationForPotentialIncentiveReduction
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Indemnification for potential incentive reduction second.

+ References

No definition available.

+ Details

Name:	ello_IndemnificationForPotentialIncentiveReductionSecond
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Indemnification for potential tax liabilities.

+ References

No definition available.

+ Details

Name:	ello_IndemnificationForPotentialTaxLiabilities
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of subsidiaries sold.

+ References

No definition available.

+ Details

Name:	ello_NumberOfSubsidiariesSold
Namespace Prefix:	ello_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Output percentage of financial power swap.

+ References

No definition available.

+ Details

Name:	ello_OutputPercentageOfFinancialPowerSwap
Namespace Prefix:	ello_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of financed amount.

+ References

No definition available.

+ Details

Name:	ello_PercentageOfFinancedAmount
Namespace Prefix:	ello_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of concession project.

+ References

No definition available.

+ Details

Name:	ello_PeriodOfConcessionProject
Namespace Prefix:	ello_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of financial power swap.

+ References

No definition available.

+ Details

Name:	ello_PeriodOfFinancialPowerSwap
Namespace Prefix:	ello_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of plant operate.

+ References

No definition available.

+ Details

Name:	ello_PeriodOfPlantOperate
Namespace Prefix:	ello_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Project financing aggregate amount.

+ References

No definition available.

+ Details

Name:	ello_ProjectFinancingAggregateAmount
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Recognized amount in equity.

+ References

No definition available.

+ Details

Name:	ello_RecognizedAmountInEquity
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Repayment of other existing loans.

+ References

No definition available.

+ Details

Name:	ello_RepaymentOfOtherExistingLoans
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Repayment of shares and shareholder loans.

+ References

No definition available.

+ Details

Name:	ello_RepaymentOfSharesAndShareholderLoans
Namespace Prefix:	ello_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of acquisition-related costs recognised as an expense for transactions that are recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph m
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_m&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph f
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_CashTransferred
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2020-01-01
-Paragraph 130
-Subparagraph g
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_130_g&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of residual interest in the assets of the entity after deducting all its liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 1
-IssueDate 2020-01-01
-Paragraph 24
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2020-en-r&anchor=para_24_a&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 1
-IssueDate 2020-01-01
-Paragraph 32
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2020-en-r&anchor=para_32_a_i&doctype=Standard
-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2020-01-01
-Paragraph 93
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_a&doctype=Standard
-URIDate 2020-01-01

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2020-01-01
-Paragraph 93
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_b&doctype=Standard
-URIDate 2020-01-01

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2020-01-01
-Paragraph 93
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_e&doctype=Standard
-URIDate 2020-01-01

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_Equity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value, at the acquisition date, of equity interests of the acquirer transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph f
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_f_iv&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_EquityInterestsOfAcquirer
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph IE72
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from current borrowings obtained. [Refer: Current borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2020-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_ProceedsFromCurrentBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph 19B
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_19B_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 28
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_28_a&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 23
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_23_a&doctype=Standard
-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 32
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_32&doctype=Standard
-URIDate 2020-01-01

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 33
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_33_a&doctype=Standard
-URIDate 2020-01-01

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2020-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&anchor=para_34&doctype=Standard
-URIDate 2020-01-01

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 82
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_82_a&doctype=Standard
-URIDate 2020-01-01

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 103
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_103&doctype=Standard
-URIDate 2020-01-01

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 102
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_102&doctype=Standard
-URIDate 2020-01-01

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2020-01-01
-Paragraph 33
-Subparagraph b
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2020-en-r&anchor=para_33_b_i&doctype=Standard
-URIDate 2020-01-01

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph B12
-Subparagraph b
-Clause v
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B
-URIDate 2020-01-01

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph B10
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_Revenue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=ello_EllomayLuxembourgMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=ello_GroenGasGelderlAndBVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ProductsAndServicesAxis=ello_LicensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=ello_ItalianIndirectWhollyOwnedSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=ello_IsraelElectricityAuthorityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ello_GroenGasOudeTongeAnaerobicDigestionProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_EllomayLuxembourgMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ello_BioGasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ello_GroenGoorAnaerobicDigestionProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_LudanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_TalmeiYosefMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_GroenGoorAndGroenGasOudeTongeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_TalasolMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_EPCAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ello_TalasolSPAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investee Companies and other investments (Subsidiaries) (Narrative) (Details) € in Thousands	1 Months Ended						12 Months Ended
	Apr. 17, 2019 EUR (€)	Mar. 31, 2019 EUR (€)	Dec. 31, 2018 EUR (€)	Jun. 30, 2018 EUR (€)	Jun. 30, 2017	Jul. 31, 2016	Dec. 31, 2020 EUR (€) $ / shares	Dec. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 EUR (€)	Jan. 27, 2021 EUR (€)	Nov. 30, 2020 EUR (€)	Sep. 30, 2020 EUR (€)	Dec. 20, 2019 Number	Nov. 30, 2019 EUR (€)	Dec. 31, 2017 EUR (€)	Apr. 30, 2017 EUR (€)
Disclosure of subsidiaries [line items]
Amount of loan							€ 198,169	€ 198,169	€ 93,320
Acquisition-related costs								60
Revenue								€ 9,645	18,988	€ 18,117
Discount rate							6.00%	6.00%
Equity			€ 76,957				€ 125,026	€ 125,026	107,566	76,957						€ 77,500
Capital gain									18,770
Ellomay Luxembourg [Member]
Disclosure of subsidiaries [line items]
Deferred payment received											€ 1,400
Groen Gas Gelderland B.V [Member]
Disclosure of subsidiaries [line items]
Green gas production capacity per year								9.5 million
Repayment of shares and shareholder loans								€ 1,567
Repayment of other existing loans								5,897
Amount receivable for subsidy payments								€ 493
Groen Gas Gelderland B.V [Member] \| License [Member]
Disclosure of subsidiaries [line items]
Green gas production capacity per year								7.5 million
Italian indirect wholly-owned subsidiaries [Member]
Disclosure of subsidiaries [line items]
Amount of loan							30,725	€ 30,725
Adjusted amount of funds received							2,300	2,300
Aggregate purchase price							38,700	38,700
Fair value of identifiable assets acquired and liabilities assumed							7,464	7,464
Number of subsidiaries sold \| Number														10
Indemnification for potential tax liabilities							250	250
Indemnification for potential incentive reduction							€ 500	€ 500
Indemnification for potential incentive reduction second									€ 2,100
Israel Electricity Authority [Member]
Disclosure of subsidiaries [line items]
Period of concession project								16 years
Weighted interest rate							5.90%	5.90%
Euro [Member]
Disclosure of subsidiaries [line items]
Amount of loan												€ 750
Weighted interest rate												3.00%
Groen Gas Oude-Tonge Anaerobic Digestion Project [Member] \| Euro [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries					51.00%
Ellomay Luxembourg [Member]
Disclosure of subsidiaries [line items]
Percentage of payment of shares															100.00%
Ellomay Luxembourg [Member] \| Euro [Member]
Disclosure of subsidiaries [line items]
Advance payment															€ 1,250
Additional advance payment													€ 304
Ellomay Luxembourg [Member] \| Biogas [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries						51.00%
Ellomay Luxembourg [Member] \| Groen Goor Anaerobic Digestion Project [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries						51.00%
Ludan [Member] \| Biogas [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries						49.00%
Talmei Yosef [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries					100.00%
Percentage of financed amount					100.00%
Period of plant operate								20 years
Electricity produced per KWP \| $ / shares							€ 0.9631
Groen Goor and Groen Gas Oude-Tonge [Member] \| Biogas [Member]
Disclosure of subsidiaries [line items]
Amount of loan		€ 3,000
Percentage of Acquired additional interest subsidiaries		49.00%
Talasol [Member]
Disclosure of subsidiaries [line items]
Percentage of Acquired additional interest subsidiaries	24.50%
Aggregate purchase price																	€ 10,000
Output percentage of financial power swap				80.00%
Period of financial power swap				10 years
Proceeds from project finance			€ 177,000
EPC Agreement [Member]
Disclosure of subsidiaries [line items]
Fixed and lump-sum amount				€ 192,500
Talasol SPA [Member]
Disclosure of subsidiaries [line items]
Percentage of payment of shares	49.00%
Project financing aggregate amount	€ 16,100
Deferred aggregate purchase price	1,400
Equity	6,100
Payment of shares	4,900
Recognized amount in equity	6,100
Associated expenses in equity	€ 700