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Basic and diluted net earnings (loss) per share - Schedule of Earnings (Loss) per Share (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Class of Stock [Line Items]    
Net earnings (loss) attributable to shareholders of AQN $ 28,674,000 $ (211,989,000)
Series A and D Preferred shares dividend 8,356,000 8,720,000
Net earnings (loss) attributable to common shareholders of AQN – basic (in shares) 20,318,000 (220,709,000)
Net earnings (loss) attributable to common shareholders of AQN – diluted (in shares) $ 20,318,000 $ (220,709,000)
Weighted average number of shares    
Basic (in shares) 688,738,717 677,862,207
Effect of dilutive securities (in shares) 2,024,509 0
Diluted (in shares) 690,763,226 677,862,207
Series A preferred shares    
Class of Stock [Line Items]    
Series A and D Preferred shares dividend $ 4,586,000 $ 4,786,000
Series D preferred shares    
Class of Stock [Line Items]    
Series A and D Preferred shares dividend $ 3,770,000 $ 3,934,000