v3.21.1

Contracted concessional assets (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | $ 7,987,180 |  | $ 8,155,418
Amount of decrease in the contracted concessional assets cost | 35,000 |  |
Impairment provision based on expected credit losses on contracted concessional financial assets | (18,000) |  |
Impairment loss on contracted concessional financial assets | 0 | $ 0 |
Reversal of impairment losses |  | $ 30,000 |
Financial assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 853,950 |  | 849,149
Financial assets under IFRS 16 lessor [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 2,884 |  | 2,941
Intangible assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 6,818,433 |  | 7,024,789
Intangible assets under IFRS 16 lessee [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 56,170 |  | 56,170
Other intangible assets [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 7,217 |  | 7,689
Property, plant and equipment [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 250,615 |  | 214,680
Cost [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 10,690,638 |  | 10,824,037
Cost [Member] | Financial assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 923,932 |  | 936,837
Cost [Member] | Financial assets under IFRS 16 lessor [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 2,884 |  | 2,941
Cost [Member] | Intangible assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 9,312,437 |  | 9,467,309
Cost [Member] | Intangible assets under IFRS 16 lessee [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 64,878 |  | 66,230
Cost [Member] | Other intangible assets [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 13,785 |  | 13,800
Cost [Member] | Property, plant and equipment [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 372,722 |  | 336,920
Amortization and Impairment [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | (2,703,458) |  | (2,668,619)
Amortization and Impairment [Member] | Financial assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | (69,982) |  | (87,689)
Amortization and Impairment [Member] | Financial assets under IFRS 16 lessor [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | 0 |  | 0
Amortization and Impairment [Member] | Intangible assets under IFRIC 12 [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | (2,494,004) |  | (2,442,520)
Amortization and Impairment [Member] | Intangible assets under IFRS 16 lessee [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | (10,795) |  | (10,060)
Amortization and Impairment [Member] | Other intangible assets [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | (6,569) |  | (6,111)
Amortization and Impairment [Member] | Property, plant and equipment [Member] |  |  |
Contracted Concessional Assets [Abstract] |  |  |
Contracted concessional assets | $ (122,107) |  | $ (122,240)

X
- Definition The amount of assets held under a service concession arrangement. Concessional assets include property plant and equipment, financial assets and intangible assets that are expected to be used during more than one period. + References No definition available. + Details
Name: | aby_ContractedConcessionalAssets
Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase (decrease) in the provision for impairment loss recognized on contracted concessional financial assets. + References No definition available. + Details
Name: | aby_IncreaseDecreaseInProvisionForImpairmentLossRecognizedInProfitOrLossContractedConcessionalFinancialAssets
Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2020-01-01 + Details
Name: | ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of reversal of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Reversal of impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_vi&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=aby_FinancialAssetsUnderIFRIC12Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=aby_FinancialAssetsUnderIFRS16LessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=aby_IntangibleAssetsUnderIFRIC12Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=aby_IntangibleAssetsUnderIFRS16LesseeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_PropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedDepreciationAmortisationAndImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |