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- Definition

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Fair Value of Financial Instruments [Line Items]

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Revenue Collection Period

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No definition available.

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Volume of Energy Commodity Contracts, Natural Gas

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No definition available.

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Value of input used to measure alternative investment.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Face (par) amount of debt instrument at time of issuance.

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The average strike price on the group of price risk option contracts such as put options or call options.

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The forward price on the price risk forward or futures contract, such as a gas futures contract.

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Nominal number of units used to calculate payment on derivative.

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Nominal or face amount used to calculate payment on derivative.

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Gross amount of debt extinguished.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Financial instruments - Additional Information (Detail)			12 Months Ended
Financial instruments - Additional Information (Detail)	Jul. 31, 2023 USD ($)	Mar. 13, 2023 USD ($)	Dec. 31, 2023 USD ($) MWh MMBTU $ / MWh $ / shares	Dec. 31, 2023 CAD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CAD ($)	Dec. 31, 2023 CAD ($) MWh MMBTU	Sep. 29, 2023 USD ($)	Dec. 31, 2022 CAD ($)	Dec. 17, 2022 MWh $ / MWh	Apr. 09, 2021 CAD ($)	May 23, 2019 USD ($)
Fair Value of Financial Instruments [Line Items]
Foreign currency gain (loss)			$ (5,386,000)		$ (23,502,000)
Revenue collection period			45 days	45 days
Accounts receivable			$ 554,438,000
Cash on hand			56,147,000
Liquidity available under the facilities			1,200,000,000		2,515,600,000
Revolving and Term Credit Facilities
Fair Value of Financial Instruments [Line Items]
Liquidity available under the facilities			945,853,000
Regulated Services Group
Fair Value of Financial Instruments [Line Items]
Accounts receivable			364,084,000
Designated as a hedge
Fair Value of Financial Instruments [Line Items]
Amortization of AOCI gains frozen as a result of hedge dedesignation			606,000		(18,561,000)
Senior Unsecured Notes
Fair Value of Financial Instruments [Line Items]
Debt repaid upon maturity	$ 75,000,000	$ 15,000,000
U.S. dollar Subordinated unsecured notes \| Senior Unsecured Notes
Fair Value of Financial Instruments [Line Items]
Par value							$ 300,000,000		$ 300,000,000			$ 350,000,000
Canadian dollar Senior unsecured notes \| Blue Hill Wind Facility
Fair Value of Financial Instruments [Line Items]
Cross-currency interest rate swap									$ 489,506,000
Gain (loss) on sale of derivatives				$ 9,732,000
Canadian dollar Senior unsecured notes \| Senior Unsecured Notes
Fair Value of Financial Instruments [Line Items]
Par value							$ 1,200,000,000
Non-regulated Energy Sales
Fair Value of Financial Instruments [Line Items]
Unrealized gains (loss) in AOCI to be reclassified			$ (25,895,000)
Swap
Fair Value of Financial Instruments [Line Items]
Commodity volumes, gas \| MMBTU			2,117,039				2,117,039
Canadian Investments and Subsidiaries
Fair Value of Financial Instruments [Line Items]
Foreign currency gain (loss)			$ (12,330,000)		2,262,000
Foreign exchange contract
Fair Value of Financial Instruments [Line Items]
Foreign currency gain (loss)			6,976,000		22,091,000
Cross-currency interest rate swap
Fair Value of Financial Instruments [Line Items]
Debt repaid upon maturity				$ 200,000,000		$ 150,000,000
Currency Swap
Fair Value of Financial Instruments [Line Items]
Foreign currency gain (loss)			5,959,000		(11,082,000)
Currency Swap \| U.S. dollar Subordinated unsecured notes \| Senior Unsecured Notes
Fair Value of Financial Instruments [Line Items]
Foreign currency gain (loss)			$ 8,420,000		$ (13,374,000)
Currency Swap \| Canadian dollar Senior unsecured notes \| Senior Unsecured Notes
Fair Value of Financial Instruments [Line Items]
Par value											$ 400,000,000
Interest rate swaps designated as a hedge
Fair Value of Financial Instruments [Line Items]
Notional quantity								$ 390,000,000
Transmission congestion rights
Fair Value of Financial Instruments [Line Items]
Notional quantity (MW-hrs) \| MWh			5,486,961				5,486,961
Interest Rate Cap
Fair Value of Financial Instruments [Line Items]
Notional quantity (MW-hrs) \| MWh										516,202
Receive average prices (per MW-hr) \| $ / MWh										25.15
Minimum \| Atlantica Yield Energy Solutions Canada Inc. (b) \| Measurement Input, Discount Rate
Fair Value of Financial Instruments [Line Items]
Alternative investment, measurement input (percent)			0.0800				0.0800
Minimum \| Atlantica Yield Energy Solutions Canada, Inc \| Measurement Input, Price Volatility
Fair Value of Financial Instruments [Line Items]
Alternative investment, measurement input (percent)			0.2747				0.2747
Minimum \| Energy contracts
Fair Value of Financial Instruments [Line Items]
Forward price \| $ / MWh			26.32
Derivative auction price (in USD per share) \| $ / shares			$ 0
Minimum \| Transmission congestion rights
Fair Value of Financial Instruments [Line Items]
Receive average prices (per MW-hr) \| $ / MWh			0.55
Maximum \| Atlantica Yield Energy Solutions Canada Inc. (b) \| Measurement Input, Discount Rate
Fair Value of Financial Instruments [Line Items]
Alternative investment, measurement input (percent)			0.0850				0.0850
Maximum \| Atlantica Yield Energy Solutions Canada, Inc \| Measurement Input, Price Volatility
Fair Value of Financial Instruments [Line Items]
Alternative investment, measurement input (percent)			0.3319				0.3319
Maximum \| Energy contracts
Fair Value of Financial Instruments [Line Items]
Forward price \| $ / MWh			144.02
Derivative auction price (in USD per share) \| $ / shares			$ 52.02
Maximum \| Transmission congestion rights
Fair Value of Financial Instruments [Line Items]
Receive average prices (per MW-hr) \| $ / MWh			24.88
Weighted average useful lives \| Atlantica Yield Energy Solutions Canada Inc. (b) \| Measurement Input, Discount Rate
Fair Value of Financial Instruments [Line Items]
Alternative investment, measurement input (percent)			0.0827				0.0827
Weighted average useful lives \| Energy contracts
Fair Value of Financial Instruments [Line Items]
Forward price \| $ / MWh			38.44
Derivative auction price (in USD per share) \| $ / MWh			$ 5.69
Weighted average useful lives \| Transmission congestion rights
Fair Value of Financial Instruments [Line Items]
Receive average prices (per MW-hr) \| $ / MWh			5.16