v3.20.4

Corporate debt, Breakdown of corporate debt (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Corporate debt [Abstract] |  |
Total Non-current | $ 970,077 | $ 695,085
Total Current | 23,648 | 28,706
Credit Facilities with Financial Entities [Member] |  |
Corporate debt [Abstract] |  |
Total Non-current | 867,933 | 695,085
Total Current | 342 | 789
Notes and Bonds [Member] |  |
Corporate debt [Abstract] |  |
Total Non-current | 102,144 | 0
Total Current | $ 23,306 | $ 27,917

X
- Definition The current portion of non-current credit facilities with financial entities, notes and bonds received at the corporate parent level. + References No definition available. + Details
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Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The non-current portion of non-current credit facilities with financial entities, notes and bonds received at the corporate parent level. + References No definition available. + Details
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Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=aby_NotesAndBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |