Currency/linkage payable.

No definition available.

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

- Definition

Currency/linkage receivable.

+ References

No definition available.

+ Details

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

- Definition

Interest swap transaction period.

+ References

No definition available.

+ Details

Name:	ello_InterestSwapTransactionPeriod
Namespace Prefix:	ello_
Data Type:	xbrli:stringItemType
Balance Type:	na
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

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

- Definition

The description of the line item in the statement of financial position that includes the hedging instrument. [Refer: Hedging instruments [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 24A
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_24A_b&doctype=Standard
-URIDate 2020-01-01

+ Details

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

- 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

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

- Definition

The fair value of financial instruments designated as hedging instruments. Hedging instruments are designated derivatives or (for a hedge of the risk of changes in foreign currency exchange rates only) designated non-derivative financial assets or non-derivative financial liabilities whose fair value or cash flows are expected to offset changes in the fair value or cash flows of a designated hedged item. [Refer: At fair value [member]; Derivatives [member]; Derivative financial assets; Derivative financial liabilities; Financial instruments, class [member]; Financial assets; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 22
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_22_b&doctype=Standard&book=b
-URIDate 2020-01-01

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ello_InterestSwapTransactionThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ello_SemiAnnuallyMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_ForwardContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_CurrencySwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ello_FinancialPowerSwapMember
Namespace Prefix:
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Financial Instruments (Schedule of Forward and SWAP Contracts) (Details) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2020	Nov. 30, 2020	Dec. 31, 2019
Disclosure of detailed information about hedges [line items]
Loan agreement	€ 198,169		€ 93,320
Euro [Member]
Disclosure of detailed information about hedges [line items]
Loan agreement		€ 750
Interest swap contract [Member] \| Semi-annually [Member]
Disclosure of detailed information about hedges [line items]
Currency linkage interest rate receivable	Euribor 6 months
Currency linkage interest rate payable	Fixed 1%
Date of expiration	December 20, 2037
Fair value	€ (1,199)
Interest swap transaction period	18 years
Interest swap contract [Member] \| Semi-annually [Member] \| Euro [Member]
Disclosure of detailed information about hedges [line items]
Loan agreement	€ 17,600
Interest rate swap contract [Member] \| Semi-annually [Member]
Disclosure of detailed information about hedges [line items]
Currency linkage interest rate receivable	Euribor 6 months
Currency linkage interest rate payable	Fixed 0.9412%
Date of expiration	September 30, 2031
Fair value	€ (8,371)
Interest swap transaction period	12 years
Interest rate swap contract [Member] \| Semi-annually [Member] \| Euro [Member]
Disclosure of detailed information about hedges [line items]
Loan agreement	€ 131,000
Forward contract [Member]
Disclosure of detailed information about hedges [line items]
Currency linkage interest rate payable	weighted average rate of approximately 4.03
Date of expiration	January 2021
Forward contract [Member] \| Euro [Member]
Disclosure of detailed information about hedges [line items]
Fair value	€ 66
Loan agreement	€ 8
Currency swap [Member]
Disclosure of detailed information about hedges [line items]
Currency linkage interest rate receivable	NIS
Currency linkage interest rate payable	Euro
Date of expiration	June 2024
Fair value	€ (132)
Interest swap transaction period	7 years
Currency swap [Member] \| NIS [Member]
Disclosure of detailed information about hedges [line items]
Loan agreement	€ 83,200
Financial power swap [Member]
Disclosure of detailed information about hedges [line items]
Currency linkage interest rate receivable	Electricity price in Spain
Currency linkage interest rate payable	Fixed price
Date of expiration	September 30, 2030
Fair value	€ 10,238