Earnings and Dividends per Share and 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
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income attributable to Aimco Operating Partnership	$ 8,209	$ 20,214
Net income allocated to Aimco participating securities	(114)
Net income attributable to Aimco common stockholders	$ 8,095	$ 20,214
Basic weighted-average common stock outstanding	149,790	148,914
Diluted share equivalents outstanding	558	132
Diluted weighted-average common stock outstanding	150,348	149,046
Earnings per share - basic	$ 0.05	$ 0.14
Earnings per share - diluted	$ 0.05	$ 0.14
Aimco OP L.P. [Member]
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income attributable to Aimco Operating Partnership	$ 8,644	$ 21,295
Net income allocated to Aimco participating securities	(118)
Net income attributable to Aimco common stockholders	$ 8,526	$ 21,295
Basic weighted-average common stock outstanding	157,718	156,882
Diluted share equivalents outstanding	767	132
Diluted weighted-average common stock outstanding	158,485	157,014
Earnings per share - basic	$ 0.05	$ 0.14
Earnings per share - diluted	$ 0.05	$ 0.14