v3.10.0.1

Corporate debt, Repayment schedule (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Repayment schedule [Abstract] |  |
Corporate debt | $ 639,041 | $ 643,083
Remainder of 2018 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 14,878 |
Between January and June 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Between July and December 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 253,818 |
2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 57,586 |
2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 104,632 |
Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 208,127 |
New Revolving Credit Facility [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 57,586 |
New Revolving Credit Facility [Member] | Remainder of 2018 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
New Revolving Credit Facility [Member] | Between January and June 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
New Revolving Credit Facility [Member] | Between July and December 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
New Revolving Credit Facility [Member] | 2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
New Revolving Credit Facility [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 57,586 |
New Revolving Credit Facility [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
New Revolving Credit Facility [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 312,808 |
Note Issuance Facility [Member] | Remainder of 2018 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 49 |
Note Issuance Facility [Member] | Between January and June 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility [Member] | Between July and December 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility [Member] | 2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
Note Issuance Facility [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 104,632 |
Note Issuance Facility [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 208,127 |
2017 Credit Facility [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 11,705 |
2017 Credit Facility [Member] | Remainder of 2018 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 11,705 |
2017 Credit Facility [Member] | Between January and June 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | Between July and December 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | 2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2017 Credit Facility [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2019 Notes [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 256,942 |
2019 Notes [Member] | Remainder of 2018 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 3,124 |
2019 Notes [Member] | Between January and June 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2019 Notes [Member] | Between July and December 2019 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 253,818 |
2019 Notes [Member] | 2020 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2019 Notes [Member] | 2021 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2019 Notes [Member] | 2022 [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | 0 |
2019 Notes [Member] | Subsequent Years [Member] |  |
Repayment schedule [Abstract] |  |
Corporate debt | $ 0 |

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

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

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=aby_LaterThanOneYearAndNotLaterThanEighteenMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=aby_LaterThanEighteenMonthsAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=aby_CreditFacility2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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