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	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco	$ (166,196)	$ 75,726	$ (5,910)
Net income (loss) allocated to Aimco participating securities	0	(1,087)	0
Net income (loss) attributable to Aimco common stockholders	$ (166,196)	$ 74,639	$ (5,910)
Basic weighted-average OP Units outstanding	143,618	149,395	149,480
Diluted OP Unit equivalents outstanding	0	1,439	0
Diluted weighted-average OP Units outstanding	143,618	150,834	149,480
Earnings (loss) per share - basic	$ (1.16)	$ 0.5	$ (0.04)
Earnings (loss) per share - diluted	$ (1.16)	$ 0.49	$ (0.04)
Aimco OP L.P. [Member]
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco	$ (175,234)	$ 79,657	$ (6,207)
Net income (loss) allocated to Aimco participating securities	0	(1,131)	0
Net income (loss) attributable to Aimco common stockholders	$ (175,234)	$ 78,526	$ (6,207)
Basic weighted-average OP Units outstanding	151,371	157,317	157,701
Diluted OP Unit equivalents outstanding	0	1,457	0
Diluted weighted-average OP Units outstanding	151,371	158,774	157,701
Earnings (loss) per share - basic	$ (1.16)	$ 0.5	$ (0.04)
Earnings (loss) per share - diluted	$ (1.16)	$ 0.49	$ (0.04)