Allego N.V. Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Cover
- Cover
- Audit Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Material accounting policies (Policies)
Notes Tables
Notes Details

Borrowings - Summary of Breakdown of Borrowings (Detail)

v3.24.1.1.u2

Borrowings - Summary of Breakdown of Borrowings (Detail) € in Thousands	12 Months Ended
	Dec. 31, 2023 EUR (€)	Dec. 31, 2025	Dec. 31, 2022 EUR (€) loan	Dec. 31, 2019 loan
Disclosure of detailed information about borrowings [line items]
Borrowings	€ 350,722		€ 269,033
Euribor floored rate	0.00%
Renewed facility
Disclosure of detailed information about borrowings [line items]
Borrowings	€ 350,722		€ 269,033
Interest rate	3.90%
Borrowings, adjustment to interest rate basis	3.90%
Renewed facility \| Top of range \| Forecast
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis		0.20%
Renewed facility \| Borrowings
Disclosure of detailed information about borrowings [line items]
Interest rate	3.90%
Shareholder loans
Disclosure of detailed information about borrowings [line items]
Number of loans \| loan			2	6

- Definition

Borrowing, Number Of Loans

+ References

No definition available.

+ Details

Name:	allg_BorrowingNumberOfLoans
Namespace Prefix:	allg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Euribor Floored Rate.

+ References

No definition available.

+ Details

Name:	allg_EuriborFlooredRate
Namespace Prefix:	allg_
Data Type:	dtr-types1:percentItemType
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 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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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types: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 members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Balance Type:
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- Details

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