v3.10.0.1

Nature of the business, Description (Details)	Mar. 09, 2018
Algonquin [Member]
Nature of the business [Abstract]
Ownership interest	25.00%

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- References

No definition available.

+ Details

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

X

- Definition

The proportion of ownership interests in the entity held by non-controlling interests.

+ References

No definition available.

+ Details

Name:	aby_ProportionOfOwnershipInterestsHeldByNoncontrollingInterestsInReportingEntity
Namespace Prefix:	aby_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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