The period over which the interest from debt is capitalized.

No definition available.

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Period Type:	duration

- Definition

The percentage of the principal amount of debt paid upfront upon drawdown of the facility.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage average cost of issued short term notes.

+ References

No definition available.

+ Details

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- Definition

The maximum amount of short term notes that entity is authorized to issue.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The term of short term notes in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Term of the interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.

+ References

No definition available.

+ Details

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Namespace Prefix:	aby_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_7&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of commercial paper issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from borrowings obtained. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 17
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_17_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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Data Type:	na
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- Details

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Balance Type:
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Balance Type:
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- Details

Name:	ifrs-full_BorrowingsByNameAxis=aby_NewRevolvingCreditFacilityMember
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Balance Type:
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- Details

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Corporate debt, Details of corporate debt (Details) $ in Thousands, € in Millions	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 30, 2019 EUR (€)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 EUR (€)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Jun. 30, 2020 EUR (€)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Oct. 08, 2019 EUR (€)	May 10, 2018 USD ($)	Jul. 20, 2017 USD ($)	Jul. 20, 2017 EUR (€)	Feb. 10, 2017 EUR (€)
Corporate debt [Abstract]
Amount drawn				$ 594,803	$ 308,981
Note Issuance Facility 2017 [Member]
Corporate debt [Abstract]
Principal amount \| €															€ 275.0
Series 1 Notes [Member]
Corporate debt [Abstract]
Maturity date				2022
Series 2 Notes [Member]
Corporate debt [Abstract]
Maturity date				2023
Series 3 Notes [Member]
Corporate debt [Abstract]
Maturity date				2024
2017 Credit Facility [Member]
Corporate debt [Abstract]
Maturity date				December 13, 2021
Amount drawn \| €			€ 9.0				€ 9.0
2017 Credit Facility [Member] \| Top of Range [Member]
Corporate debt [Abstract]
Credit facility amount													$ 11,200	€ 10.0
2017 Credit Facility [Member] \| EURIBOR [Member]
Corporate debt [Abstract]
Adjustment to interest rate													2.00%	2.00%
2017 Credit Facility [Member] \| LIBOR [Member]
Corporate debt [Abstract]
Adjustment to interest rate													2.00%	2.00%
New Revolving Credit Facility [Member]
Corporate debt [Abstract]
Credit facility amount		$ 425,000		$ 425,000								$ 215,000
Amount drawn		174,000				$ 84,000
New Revolving Credit Facility [Member] \| Maturity December 31, 2022 [Member]
Corporate debt [Abstract]
Maturity date				December 31, 2022
Credit facility amount		387,500		$ 387,500
New Revolving Credit Facility [Member] \| Maturity December 31, 2021 [Member]
Corporate debt [Abstract]
Maturity date				December 31, 2021
Credit facility amount		37,500		$ 37,500
Eurodollar Rate Loans [Member] \| LIBOR [Member] \| Bottom of Range [Member]
Corporate debt [Abstract]
Adjustment to interest rate												1.60%
Eurodollar Rate Loans [Member] \| LIBOR [Member] \| Top of Range [Member]
Corporate debt [Abstract]
Adjustment to interest rate												2.25%
Base Rate Loans [Member] \| Bottom of Range [Member]
Corporate debt [Abstract]
Adjustment to interest rate												0.60%
Base Rate Loans [Member] \| Top of Range [Member]
Corporate debt [Abstract]
Adjustment to interest rate												1.00%
Base Rate Loans [Member] \| Federal Funds Rate [Member]
Corporate debt [Abstract]
Adjustment to interest rate												0.50%
Base Rate Loans [Member] \| LIBOR [Member]
Corporate debt [Abstract]
Adjustment to interest rate												1.00%
Letters of Credit [Member]
Corporate debt [Abstract]
Credit facility amount		$ 70,000		$ 70,000
Note Issuance Facility 2019 [Member]
Corporate debt [Abstract]
Fixed interest rate	4.24%
Maturity date				April 30, 2025
Credit facility amount \| €	€ 268.0
Upfront fee percentage	2.00%
Interest capitalization period	2 years
Note Issuance Facility 2019 [Member] \| Interest Rate Swap [Member]
Corporate debt [Abstract]
Maturity date				June 30, 2022
Note Issuance Facility 2019 [Member] \| EURIBOR [Member]
Corporate debt [Abstract]
Variable interest period	3 months
Adjustment to interest rate	4.50%
Commercial Paper [Member]
Corporate debt [Abstract]
Short term notes authorized amount \| €											€ 50.0
Term of short term notes						2 years	2 years
Short term notes issued amount \| €							€ 25.0	€ 20.3
Percentage average cost of issued short term notes				0.76%
2020 Green Private Placement [Member]
Corporate debt [Abstract]
Principal amount									$ 320,000	€ 290.0
Maturity date				June 30, 2026
Adjustment to interest rate									1.96%	1.96%