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Earnings per Share and per Unit - Reconciliations of Numerator and Denominator in Calculations of Basic and Diluted Earnings per Share and per Unit (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Schedule of Earnings Per Share and Dividends Per Share [Line Items]        
Net income (loss) attributable to Aimco $ (2,260) $ 29,472 $ (14,697) $ 276,817
Net income allocated to Aimco participating securities 0 (405) 0 (3,806)
Net income (loss) attributable to Aimco common stockholders $ (2,260) $ 29,067 $ (14,697) $ 273,011
Basic weighted-average common stock outstanding 143,299 149,611 144,431 149,706
Diluted share equivalents outstanding 0 1,586 0 1,370
Diluted weighted-average common stock outstanding 143,299 151,197 144,431 151,076
Earnings (loss) per share - basic $ (0.02) $ 0.19 $ (0.1) $ 1.82
Earnings (loss) per share - diluted $ (0.02) $ 0.19 $ (0.1) $ 1.81
Aimco OP L.P. [Member]        
Schedule of Earnings Per Share and Dividends Per Share [Line Items]        
Net income (loss) attributable to Aimco $ (2,383) $ 31,026 $ (15,472) $ 291,465
Net income allocated to Aimco participating securities 0 (421) 0 (3,964)
Net income (loss) attributable to Aimco common stockholders $ (2,383) $ 30,605 $ (15,472) $ 287,501
Basic weighted-average common stock outstanding 151,027 157,530 152,199 157,627
Diluted share equivalents outstanding 0 1,606 0 1,390
Diluted weighted-average common stock outstanding 151,027 159,136 152,199 159,017
Earnings (loss) per share - basic $ (0.02) $ 0.19 $ (0.1) $ 1.82
Earnings (loss) per share - diluted $ (0.02) $ 0.19 $ (0.1) $ 1.81