v3.10.0.1

Corporate debt, Breakdown of corporate debt (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Corporate debt [Abstract] |  |
Total Non-Current | $ 415,168 | $ 574,176
Total Current | 268,905 | 68,907
Credit Facilities with Financial Entities [Member] |  |
Corporate debt [Abstract] |  |
Total Non-Current | 415,168 | 320,783
Total Current | 11,580 | 65,833
Notes and Bonds [Member] |  |
Corporate debt [Abstract] |  |
Total Non-Current | 0 | 253,393
Total Current | $ 257,325 | $ 3,074

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
Name: | aby_CurrentPortionOfNoncurrentCreditFacilitiesNotesAndBondsReceived
Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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
Name: | aby_NonCurrentPortionOfCreditFacilitiesNotesAndBondsReceived
Namespace Prefix: | aby_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=aby_CreditFacilitiesWithFinancialEntitiesMember
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: |