Significant accounting policies, Loans and Borrowings (Details)	12 Months Ended
Dec. 31, 2023
Significant accounting policies [Abstract]
Percentage to evaluates redemption of old debt and issuance of new debt	10.00%
Net present value of modified cash flows including any fees paid net of any fees received	10.00%

The quantitative assessment, stated as a percentage difference of the terms of the debt instruments, that is used to determine if terms to modify debt constitutes the extinguishment of the debt instrument or whether the modification is an exchange for a new debt instrument.

No definition available.

Name:	aby_QuantitativeAssessmentDistinguishingBetweenExtinguishmentOfOldDebtFromIssuanceOfNewDebt
Namespace Prefix:	aby_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration