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Basic and diluted net earnings (loss) per share - Schedule of Earnings per Share (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Class of Stock [Line Items]    
Net earnings (loss) attributable to shareholders of AQN $ (211,989,000) $ 264,859,000
Series A and D Preferred shares dividend 8,720,000 9,003,000
Net earnings (loss) attributable to common shareholders of AQN – basic (in shares) (220,709,000) 255,856,000
Net earnings (loss) attributable to common shareholders of AQN – diluted (in shares) $ (220,709,000) $ 255,856,000
Weighted average number of shares    
Basic (in shares) 677,862,207 622,347,677
Effect of dilutive securities (in shares) 0 6,600,185
Diluted (in shares) 677,862,207 628,947,862
Preferred shares, Series A dividend    
Class of Stock [Line Items]    
Series A and D Preferred shares dividend $ 4,786,000 $ 4,942,000
Preferred shares, Series D dividend    
Class of Stock [Line Items]    
Series A and D Preferred shares dividend $ 3,934,000 $ 4,061,000