Income Tax, Movements in deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets [Abstract]
Beginning of period	$ 172,268	$ 152,290
Increase/(decrease) through the consolidated income statement	29,197	46,855
Increase/(decrease) through other consolidated comprehensive income (equity)	(46,344)	(23,712)
Business combinations (Note 5)		4,410
Currency translation differences and other	(5,465)	(7,575)
End of period	149,656	172,268
Deferred tax liabilities [Abstract]
Beginning of period	308,859	260,923
Increase/(decrease) through the consolidated income statement	(19,864)	32,059
Increase/(decrease) through other consolidated comprehensive income (equity)	17,608
Business combinations (Note 5)		4,910
Currency translation differences and other	(10,122)	10,967
End of period	$ 296,481	$ 308,859

No definition available.

Name:	aby_DeferredTaxAssetsAbstract
Namespace Prefix:	aby_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of tax expense (income) relating to changes in deferred tax assets recognised in profit or loss.

+ References

No definition available.

+ Details

Name:	aby_DeferredTaxExpenseIncomeRecognisedInProfitOrLossDeferredTaxAssets
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of tax expense (income) relating to changes in deferred tax liabilities recognized in profit or loss.

+ References

No definition available.

+ Details

Name:	aby_DeferredTaxExpenseIncomeRecognizedInProfitOrLossDeferredTaxLiabilities
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	aby_DisclosureOfDeferredTaxLiabilitiesAbstract
Namespace Prefix:	aby_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of income tax relating to amounts recognised in comprehensive income for deferred tax assets.

+ References

No definition available.

+ Details

Name:	aby_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeDeferredTaxAssets
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of income tax relating to amounts recognized in comprehensive income for deferred tax liabilities.

+ References

No definition available.

+ Details

Name:	aby_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeDeferredTaxLiabilities
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax asset resulting from business combinations.

+ References

No definition available.

+ Details

Name:	aby_IncreaseDecreaseInBusinessCombinationsDeferredTaxAsset
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax liability resulting from business combinations.

+ References

No definition available.

+ Details

Name:	aby_IncreaseDecreaseInBusinessCombinationsDeferredTaxLiability
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax asset resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity.

+ References

No definition available.

+ Details

Name:	aby_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxAsset
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase (decrease) in deferred tax liability resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity.

+ References

No definition available.

+ Details

Name:	aby_IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiability
Namespace Prefix:	aby_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of deferred tax assets net of deferred tax liabilities, when the absolute amount of deferred tax assets is greater than the absolute amount of deferred tax liabilities. [Refer: Deferred tax assets; Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2022-03-24
-Paragraph 81
-Subparagraph g
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_g_i&doctype=Standard
-URIDate 2022-03-24

+ Details

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

- Definition

The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

+ References

+ Details

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