Significant accounting policies, Revenue Recognition (Details)	12 Months Ended
Dec. 31, 2023
Spain [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.09%
Other [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.398%

The percentage of remuneration based on reasonable rate of return on assets.

No definition available.

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