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
	Mar. 31, 2023	Mar. 31, 2022
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco	$ (8,817)	$ 8,209
Net income (loss) allocated to Aimco participating securities		(114)
Net income (loss) attributable to Aimco common stockholders	$ (8,817)	$ 8,095
Basic weighted-average Common Stock outstanding	145,827	149,790
Diluted share equivalents outstanding		558
Diluted weighted-average Common Stock outstanding	145,827	150,348
Earnings (loss) per share - basic	$ (0.06)	$ 0.05
Earnings (loss) per share - diluted	$ (0.06)	$ 0.05
Aimco OP L.P. [Member]
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Net income (loss) attributable to Aimco	$ (9,291)	$ 8,644
Net income (loss) allocated to Aimco participating securities		(118)
Net income (loss) attributable to Aimco common stockholders	$ (9,291)	$ 8,526
Basic weighted-average Common Stock outstanding	153,631	157,718
Diluted share equivalents outstanding		767
Diluted weighted-average Common Stock outstanding	153,631	158,485
Earnings (loss) per share - basic	$ (0.06)	$ 0.05
Earnings (loss) per share - diluted	$ (0.06)	$ 0.05