Related parties (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Details of Balances [Abstract]
Credit receivables (current)	$ 3,507		$ 19,387
Credit receivables (non-current)	17,006		15,768
Total receivables from related parties	20,513		35,155
Credit payables (current)	8,709		9,494
Credit payables (non-current)	5		5
Total payables to related parties	8,714		9,499
Transactions with Related Party [Abstract]
Financial income	992	$ 1,112
Financial expenses	(83,402)	(85,166)
Arroyo Netherlands II B.V [Member]
Details of Balances [Abstract]
Proceeds from related party related to current credit receivables	8,200
Amherst Island Partnership [Member]
Details of Balances [Abstract]
Dividend receivable	6,300
Algonquin [Member]
Details of Balances [Abstract]
Credit payables (current)	7,400		$ 6,100
Subsidiaries [Member]
Transactions with Related Party [Abstract]
Financial income	382	510
Financial expenses	$ (120)	$ (31)

No definition available.

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

- Definition

The amounts receivable resulting from related party transactions. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2021-01-01
-Paragraph 20
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2021-en-r&anchor=para_20&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2021-01-01
-Paragraph 18
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2021-en-r&anchor=para_18_b&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Definition

The cash inflow from repayment to the entity of loans and advances made to related parties. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_16&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToRelatedParties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of costs associated with financing activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 82
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_82_b&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_FinanceCosts
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of income associated with interest and other financing activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_FinanceIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of non-current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 78
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Definition

The amount of non-current receivables due from related parties. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- References

No definition available.

+ Details

Name:	ifrs-full_RelatedPartyTransactionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of current payables due to related parties. [Refer: Related parties [member]; Payables to related parties]

+ References

+ Details

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

- Definition

The amount of current receivables due from related parties. [Refer: Related parties [member]]

+ References

+ Details

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

- Definition

The amount of payables due to related parties. [Refer: Related parties [member]]

+ References

+ Details

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

- Definition

The amount of receivables due from related parties. [Refer: Related parties [member]]

+ References

+ Details

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

- Details

Name:	dei_LegalEntityAxis=aby_ArroyoNetherlandsIIBVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=aby_AmherstIslandPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=aby_AlgonquinMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=ifrs-full_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: