Long-term investments - Equity method investees (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Equity Method Investment [Roll Forward]
Carrying value, January 1		$ 381,802
Net loss attributable to AQN		(5,936)	$ (21,416)
Impairment	$ 0		(75,910)
Carrying value, December 31	381,802	456,393	381,802
Investments in Significant Partnerships and Joint Ventures
Equity Method Investment [Roll Forward]
Carrying value, January 1		381,802	433,850
Additional investments		91,205	110,441
Net loss attributable to AQN		(5,936)	(21,416)
OCI attributable to AQN		7,693	(67,110)
Dividend received		(4,600)	(1,183)
Impairment			(75,910)
Other		(13,771)	3,130
Carrying value, December 31	$ 381,802	$ 456,393	$ 381,802

Equity Method Investment, Other Adjustments

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- Definition

Equity Method Investment

+ References

No definition available.

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- Definition

Equity Method Investments, Additional Investments

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No definition available.

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481664/323-10-45-1

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount, after tax, of other comprehensive income (loss) (OCI) for proportionate share of equity method investee's OCI.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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