Earnings and Dividends per Share and per Unit - Reconciliations of Numerator and Denominator in Calculations of Basic and Diluted Earnings (Loss) per Share and per Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco Operating Partnership	$ 29,472	$ (5,016)	$ 276,817	$ (4,492)
Net income (loss) allocated to Aimco participating securities	(405)		(3,806)
Net income (loss) attributable to Aimco common stockholders	$ 29,067	$ (5,016)	$ 273,011	$ (4,492)
Basic weighted-average common stock outstanding	149,611	149,762	149,706	149,517
Diluted share equivalents outstanding	1,586		1,370
Diluted weighted-average common stock outstanding	151,197	149,762	151,076	149,517
Earnings (loss) per share - basic	$ 0.19	$ (0.03)	$ 1.82	$ (0.03)
Earnings (loss) per share - diluted	$ 0.19	$ (0.03)	$ 1.81	$ (0.03)
Aimco OP L.P. [Member]
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco Operating Partnership	$ 31,026	$ (5,269)	$ 291,465	$ (4,701)
Net income (loss) allocated to Aimco participating securities	(421)		(3,964)
Net income (loss) attributable to Aimco common stockholders	$ 30,605	$ (5,269)	$ 287,501	$ (4,701)
Basic weighted-average common stock outstanding	157,530	157,806	157,627	157,873
Diluted share equivalents outstanding	1,606		1,390
Diluted weighted-average common stock outstanding	159,136	157,806	159,017	157,873
Earnings (loss) per share - basic	$ 0.19	$ (0.03)	$ 1.82	$ (0.03)
Earnings (loss) per share - diluted	$ 0.19	$ (0.03)	$ 1.81	$ (0.03)