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Restricted Cash, Deposits and Marketable Securities (Details) - Schedule of Restricted Cash - Restricted Cash, Deposits and Marketable Securities [Member] - EUR (€) € in Thousands		Dec. 31, 2023	Dec. 31, 2022
Restricted Cash, Deposits and Marketable Securities (Details) - Schedule of Restricted Cash [Line Items]
Marketable securities			€ 2,836
Short-term deposits		997
Short-term restricted cash	[1]	810	900
Restricted cash and bank deposits, long-term	[1]	€ 17,386	€ 20,192
[1] Deposits used to secure obligations under agreements (see Notes 6 and 21E(3)) and loan agreements (see Note 11).

X

- Definition

Restricted cash and long-term bank deposits.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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X

- Definition

The amount of short-term deposits held by the entity.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of current held-to-maturity investments. [Refer: Held-to-maturity investments]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 8
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_b&doctype=Standard&book=b
-URIDate 2023-03-23

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

X

- Definition

The amount of current restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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